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> | |
40 | #include <unistd.h> | |
41 | #include <fcntl.h> | |
b8aa1682 JD |
42 | |
43 | #include <lttng/lttng.h> | |
44 | #include <common/common.h> | |
45 | #include <common/compat/poll.h> | |
46 | #include <common/compat/socket.h> | |
f263b7fd | 47 | #include <common/compat/endian.h> |
e8fa9fb0 | 48 | #include <common/compat/getenv.h> |
b8aa1682 | 49 | #include <common/defaults.h> |
3fd27398 | 50 | #include <common/daemonize.h> |
b8aa1682 JD |
51 | #include <common/futex.h> |
52 | #include <common/sessiond-comm/sessiond-comm.h> | |
53 | #include <common/sessiond-comm/inet.h> | |
b8aa1682 JD |
54 | #include <common/sessiond-comm/relayd.h> |
55 | #include <common/uri.h> | |
a02de639 | 56 | #include <common/utils.h> |
d3ecc550 | 57 | #include <common/align.h> |
f40ef1d5 | 58 | #include <common/config/session-config.h> |
7591bab1 | 59 | #include <urcu/rculist.h> |
b8aa1682 | 60 | |
0f907de1 | 61 | #include "cmd.h" |
d3e2ba59 | 62 | #include "ctf-trace.h" |
1c20f0e2 | 63 | #include "index.h" |
0f907de1 | 64 | #include "utils.h" |
b8aa1682 | 65 | #include "lttng-relayd.h" |
d3e2ba59 | 66 | #include "live.h" |
55706a7d | 67 | #include "health-relayd.h" |
9b5e0863 | 68 | #include "testpoint.h" |
2f8f53af | 69 | #include "viewer-stream.h" |
2a174661 DG |
70 | #include "session.h" |
71 | #include "stream.h" | |
58eb9381 | 72 | #include "connection.h" |
a44ca2ca | 73 | #include "tracefile-array.h" |
f056029c | 74 | #include "tcp_keep_alive.h" |
b8aa1682 | 75 | |
4fc83d94 PP |
76 | static const char *help_msg = |
77 | #ifdef LTTNG_EMBED_HELP | |
78 | #include <lttng-relayd.8.h> | |
79 | #else | |
80 | NULL | |
81 | #endif | |
82 | ; | |
83 | ||
b8aa1682 | 84 | /* command line options */ |
0f907de1 | 85 | char *opt_output_path; |
b5218ffb | 86 | static int opt_daemon, opt_background; |
3fd27398 MD |
87 | |
88 | /* | |
89 | * We need to wait for listener and live listener threads, as well as | |
90 | * health check thread, before being ready to signal readiness. | |
91 | */ | |
92 | #define NR_LTTNG_RELAY_READY 3 | |
93 | static int lttng_relay_ready = NR_LTTNG_RELAY_READY; | |
0848dba7 MD |
94 | |
95 | /* Size of receive buffer. */ | |
96 | #define RECV_DATA_BUFFER_SIZE 65536 | |
d3ecc550 | 97 | #define FILE_COPY_BUFFER_SIZE 65536 |
0848dba7 | 98 | |
3fd27398 MD |
99 | static int recv_child_signal; /* Set to 1 when a SIGUSR1 signal is received. */ |
100 | static pid_t child_ppid; /* Internal parent PID use with daemonize. */ | |
101 | ||
095a4ae5 MD |
102 | static struct lttng_uri *control_uri; |
103 | static struct lttng_uri *data_uri; | |
d3e2ba59 | 104 | static struct lttng_uri *live_uri; |
b8aa1682 JD |
105 | |
106 | const char *progname; | |
b8aa1682 | 107 | |
65931c8b | 108 | const char *tracing_group_name = DEFAULT_TRACING_GROUP; |
cd60b05a JG |
109 | static int tracing_group_name_override; |
110 | ||
111 | const char * const config_section_name = "relayd"; | |
65931c8b | 112 | |
b8aa1682 JD |
113 | /* |
114 | * Quit pipe for all threads. This permits a single cancellation point | |
115 | * for all threads when receiving an event on the pipe. | |
116 | */ | |
0b242f62 | 117 | int thread_quit_pipe[2] = { -1, -1 }; |
b8aa1682 JD |
118 | |
119 | /* | |
120 | * This pipe is used to inform the worker thread that a command is queued and | |
121 | * ready to be processed. | |
122 | */ | |
58eb9381 | 123 | static int relay_conn_pipe[2] = { -1, -1 }; |
b8aa1682 | 124 | |
26c9d55e | 125 | /* Shared between threads */ |
b8aa1682 JD |
126 | static int dispatch_thread_exit; |
127 | ||
128 | static pthread_t listener_thread; | |
129 | static pthread_t dispatcher_thread; | |
130 | static pthread_t worker_thread; | |
65931c8b | 131 | static pthread_t health_thread; |
b8aa1682 | 132 | |
7591bab1 MD |
133 | /* |
134 | * last_relay_stream_id_lock protects last_relay_stream_id increment | |
135 | * atomicity on 32-bit architectures. | |
136 | */ | |
137 | static pthread_mutex_t last_relay_stream_id_lock = PTHREAD_MUTEX_INITIALIZER; | |
095a4ae5 | 138 | static uint64_t last_relay_stream_id; |
b8aa1682 JD |
139 | |
140 | /* | |
141 | * Relay command queue. | |
142 | * | |
143 | * The relay_thread_listener and relay_thread_dispatcher communicate with this | |
144 | * queue. | |
145 | */ | |
58eb9381 | 146 | static struct relay_conn_queue relay_conn_queue; |
b8aa1682 JD |
147 | |
148 | /* buffer allocated at startup, used to store the trace data */ | |
095a4ae5 MD |
149 | static char *data_buffer; |
150 | static unsigned int data_buffer_size; | |
b8aa1682 | 151 | |
d3e2ba59 JD |
152 | /* Global relay stream hash table. */ |
153 | struct lttng_ht *relay_streams_ht; | |
154 | ||
92c6ca54 DG |
155 | /* Global relay viewer stream hash table. */ |
156 | struct lttng_ht *viewer_streams_ht; | |
157 | ||
7591bab1 MD |
158 | /* Global relay sessions hash table. */ |
159 | struct lttng_ht *sessions_ht; | |
0a6518b0 | 160 | |
55706a7d | 161 | /* Relayd health monitoring */ |
eea7556c | 162 | struct health_app *health_relayd; |
55706a7d | 163 | |
cd60b05a JG |
164 | static struct option long_options[] = { |
165 | { "control-port", 1, 0, 'C', }, | |
166 | { "data-port", 1, 0, 'D', }, | |
8d5c808e | 167 | { "live-port", 1, 0, 'L', }, |
cd60b05a | 168 | { "daemonize", 0, 0, 'd', }, |
b5218ffb | 169 | { "background", 0, 0, 'b', }, |
cd60b05a JG |
170 | { "group", 1, 0, 'g', }, |
171 | { "help", 0, 0, 'h', }, | |
172 | { "output", 1, 0, 'o', }, | |
173 | { "verbose", 0, 0, 'v', }, | |
174 | { "config", 1, 0, 'f' }, | |
3a904098 | 175 | { "version", 0, 0, 'V' }, |
cd60b05a JG |
176 | { NULL, 0, 0, 0, }, |
177 | }; | |
178 | ||
3a904098 | 179 | static const char *config_ignore_options[] = { "help", "config", "version" }; |
cd60b05a | 180 | |
cd60b05a JG |
181 | /* |
182 | * Take an option from the getopt output and set it in the right variable to be | |
183 | * used later. | |
184 | * | |
185 | * Return 0 on success else a negative value. | |
186 | */ | |
7591bab1 | 187 | static int set_option(int opt, const char *arg, const char *optname) |
b8aa1682 | 188 | { |
cd60b05a JG |
189 | int ret; |
190 | ||
191 | switch (opt) { | |
192 | case 0: | |
193 | fprintf(stderr, "option %s", optname); | |
194 | if (arg) { | |
195 | fprintf(stderr, " with arg %s\n", arg); | |
196 | } | |
197 | break; | |
198 | case 'C': | |
e8fa9fb0 MD |
199 | if (lttng_is_setuid_setgid()) { |
200 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
201 | "-C, --control-port"); | |
202 | } else { | |
203 | ret = uri_parse(arg, &control_uri); | |
204 | if (ret < 0) { | |
205 | ERR("Invalid control URI specified"); | |
206 | goto end; | |
207 | } | |
208 | if (control_uri->port == 0) { | |
209 | control_uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
210 | } | |
cd60b05a JG |
211 | } |
212 | break; | |
213 | case 'D': | |
e8fa9fb0 MD |
214 | if (lttng_is_setuid_setgid()) { |
215 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
216 | "-D, -data-port"); | |
217 | } else { | |
218 | ret = uri_parse(arg, &data_uri); | |
219 | if (ret < 0) { | |
220 | ERR("Invalid data URI specified"); | |
221 | goto end; | |
222 | } | |
223 | if (data_uri->port == 0) { | |
224 | data_uri->port = DEFAULT_NETWORK_DATA_PORT; | |
225 | } | |
cd60b05a JG |
226 | } |
227 | break; | |
8d5c808e | 228 | case 'L': |
e8fa9fb0 MD |
229 | if (lttng_is_setuid_setgid()) { |
230 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
231 | "-L, -live-port"); | |
232 | } else { | |
233 | ret = uri_parse(arg, &live_uri); | |
234 | if (ret < 0) { | |
235 | ERR("Invalid live URI specified"); | |
236 | goto end; | |
237 | } | |
238 | if (live_uri->port == 0) { | |
239 | live_uri->port = DEFAULT_NETWORK_VIEWER_PORT; | |
240 | } | |
8d5c808e AM |
241 | } |
242 | break; | |
cd60b05a JG |
243 | case 'd': |
244 | opt_daemon = 1; | |
245 | break; | |
b5218ffb MD |
246 | case 'b': |
247 | opt_background = 1; | |
248 | break; | |
cd60b05a | 249 | case 'g': |
e8fa9fb0 MD |
250 | if (lttng_is_setuid_setgid()) { |
251 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
252 | "-g, --group"); | |
253 | } else { | |
254 | tracing_group_name = strdup(arg); | |
255 | if (tracing_group_name == NULL) { | |
256 | ret = -errno; | |
257 | PERROR("strdup"); | |
258 | goto end; | |
259 | } | |
260 | tracing_group_name_override = 1; | |
330a40bb | 261 | } |
cd60b05a JG |
262 | break; |
263 | case 'h': | |
4fc83d94 | 264 | ret = utils_show_help(8, "lttng-relayd", help_msg); |
655b5cc1 | 265 | if (ret) { |
4fc83d94 | 266 | ERR("Cannot show --help for `lttng-relayd`"); |
655b5cc1 PP |
267 | perror("exec"); |
268 | } | |
cd60b05a | 269 | exit(EXIT_FAILURE); |
3a904098 AW |
270 | case 'V': |
271 | fprintf(stdout, "%s\n", VERSION); | |
272 | exit(EXIT_SUCCESS); | |
cd60b05a | 273 | case 'o': |
e8fa9fb0 MD |
274 | if (lttng_is_setuid_setgid()) { |
275 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
276 | "-o, --output"); | |
277 | } else { | |
278 | ret = asprintf(&opt_output_path, "%s", arg); | |
279 | if (ret < 0) { | |
280 | ret = -errno; | |
281 | PERROR("asprintf opt_output_path"); | |
282 | goto end; | |
283 | } | |
cd60b05a JG |
284 | } |
285 | break; | |
286 | case 'v': | |
287 | /* Verbose level can increase using multiple -v */ | |
288 | if (arg) { | |
289 | lttng_opt_verbose = config_parse_value(arg); | |
290 | } else { | |
849e5b7b DG |
291 | /* Only 3 level of verbosity (-vvv). */ |
292 | if (lttng_opt_verbose < 3) { | |
293 | lttng_opt_verbose += 1; | |
294 | } | |
cd60b05a JG |
295 | } |
296 | break; | |
297 | default: | |
298 | /* Unknown option or other error. | |
299 | * Error is printed by getopt, just return */ | |
300 | ret = -1; | |
301 | goto end; | |
302 | } | |
303 | ||
304 | /* All good. */ | |
305 | ret = 0; | |
306 | ||
307 | end: | |
308 | return ret; | |
309 | } | |
310 | ||
311 | /* | |
312 | * config_entry_handler_cb used to handle options read from a config file. | |
f40ef1d5 | 313 | * See config_entry_handler_cb comment in common/config/session-config.h for the |
cd60b05a JG |
314 | * return value conventions. |
315 | */ | |
7591bab1 | 316 | static int config_entry_handler(const struct config_entry *entry, void *unused) |
cd60b05a JG |
317 | { |
318 | int ret = 0, i; | |
319 | ||
320 | if (!entry || !entry->name || !entry->value) { | |
321 | ret = -EINVAL; | |
322 | goto end; | |
323 | } | |
324 | ||
325 | /* Check if the option is to be ignored */ | |
326 | for (i = 0; i < sizeof(config_ignore_options) / sizeof(char *); i++) { | |
327 | if (!strcmp(entry->name, config_ignore_options[i])) { | |
328 | goto end; | |
329 | } | |
330 | } | |
331 | ||
332 | for (i = 0; i < (sizeof(long_options) / sizeof(struct option)) - 1; i++) { | |
333 | /* Ignore if entry name is not fully matched. */ | |
334 | if (strcmp(entry->name, long_options[i].name)) { | |
335 | continue; | |
336 | } | |
337 | ||
338 | /* | |
7591bab1 MD |
339 | * If the option takes no argument on the command line, |
340 | * we have to check if the value is "true". We support | |
341 | * non-zero numeric values, true, on and yes. | |
cd60b05a JG |
342 | */ |
343 | if (!long_options[i].has_arg) { | |
344 | ret = config_parse_value(entry->value); | |
345 | if (ret <= 0) { | |
346 | if (ret) { | |
347 | WARN("Invalid configuration value \"%s\" for option %s", | |
348 | entry->value, entry->name); | |
349 | } | |
350 | /* False, skip boolean config option. */ | |
351 | goto end; | |
352 | } | |
353 | } | |
354 | ||
355 | ret = set_option(long_options[i].val, entry->value, entry->name); | |
356 | goto end; | |
357 | } | |
358 | ||
359 | WARN("Unrecognized option \"%s\" in daemon configuration file.", | |
360 | entry->name); | |
361 | ||
362 | end: | |
363 | return ret; | |
364 | } | |
365 | ||
7591bab1 | 366 | static int set_options(int argc, char **argv) |
cd60b05a | 367 | { |
178a0557 | 368 | int c, ret = 0, option_index = 0, retval = 0; |
cd60b05a JG |
369 | int orig_optopt = optopt, orig_optind = optind; |
370 | char *default_address, *optstring; | |
371 | const char *config_path = NULL; | |
372 | ||
373 | optstring = utils_generate_optstring(long_options, | |
374 | sizeof(long_options) / sizeof(struct option)); | |
375 | if (!optstring) { | |
178a0557 | 376 | retval = -ENOMEM; |
cd60b05a JG |
377 | goto exit; |
378 | } | |
379 | ||
380 | /* Check for the --config option */ | |
381 | ||
382 | while ((c = getopt_long(argc, argv, optstring, long_options, | |
383 | &option_index)) != -1) { | |
384 | if (c == '?') { | |
178a0557 | 385 | retval = -EINVAL; |
cd60b05a JG |
386 | goto exit; |
387 | } else if (c != 'f') { | |
388 | continue; | |
389 | } | |
390 | ||
e8fa9fb0 MD |
391 | if (lttng_is_setuid_setgid()) { |
392 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
393 | "-f, --config"); | |
394 | } else { | |
395 | config_path = utils_expand_path(optarg); | |
396 | if (!config_path) { | |
397 | ERR("Failed to resolve path: %s", optarg); | |
398 | } | |
cd60b05a JG |
399 | } |
400 | } | |
401 | ||
402 | ret = config_get_section_entries(config_path, config_section_name, | |
403 | config_entry_handler, NULL); | |
404 | if (ret) { | |
405 | if (ret > 0) { | |
406 | ERR("Invalid configuration option at line %i", ret); | |
cd60b05a | 407 | } |
178a0557 | 408 | retval = -1; |
cd60b05a JG |
409 | goto exit; |
410 | } | |
b8aa1682 | 411 | |
cd60b05a JG |
412 | /* Reset getopt's global state */ |
413 | optopt = orig_optopt; | |
414 | optind = orig_optind; | |
b8aa1682 | 415 | while (1) { |
cd60b05a | 416 | c = getopt_long(argc, argv, optstring, long_options, &option_index); |
b8aa1682 JD |
417 | if (c == -1) { |
418 | break; | |
419 | } | |
420 | ||
cd60b05a JG |
421 | ret = set_option(c, optarg, long_options[option_index].name); |
422 | if (ret < 0) { | |
178a0557 | 423 | retval = -1; |
b8aa1682 JD |
424 | goto exit; |
425 | } | |
426 | } | |
427 | ||
428 | /* assign default values */ | |
429 | if (control_uri == NULL) { | |
fa91dc52 MD |
430 | ret = asprintf(&default_address, |
431 | "tcp://" DEFAULT_NETWORK_CONTROL_BIND_ADDRESS ":%d", | |
432 | DEFAULT_NETWORK_CONTROL_PORT); | |
b8aa1682 JD |
433 | if (ret < 0) { |
434 | PERROR("asprintf default data address"); | |
178a0557 | 435 | retval = -1; |
b8aa1682 JD |
436 | goto exit; |
437 | } | |
438 | ||
439 | ret = uri_parse(default_address, &control_uri); | |
440 | free(default_address); | |
441 | if (ret < 0) { | |
442 | ERR("Invalid control URI specified"); | |
178a0557 | 443 | retval = -1; |
b8aa1682 JD |
444 | goto exit; |
445 | } | |
446 | } | |
447 | if (data_uri == NULL) { | |
fa91dc52 MD |
448 | ret = asprintf(&default_address, |
449 | "tcp://" DEFAULT_NETWORK_DATA_BIND_ADDRESS ":%d", | |
450 | DEFAULT_NETWORK_DATA_PORT); | |
b8aa1682 JD |
451 | if (ret < 0) { |
452 | PERROR("asprintf default data address"); | |
178a0557 | 453 | retval = -1; |
b8aa1682 JD |
454 | goto exit; |
455 | } | |
456 | ||
457 | ret = uri_parse(default_address, &data_uri); | |
458 | free(default_address); | |
459 | if (ret < 0) { | |
460 | ERR("Invalid data URI specified"); | |
178a0557 | 461 | retval = -1; |
b8aa1682 JD |
462 | goto exit; |
463 | } | |
464 | } | |
d3e2ba59 | 465 | if (live_uri == NULL) { |
fa91dc52 MD |
466 | ret = asprintf(&default_address, |
467 | "tcp://" DEFAULT_NETWORK_VIEWER_BIND_ADDRESS ":%d", | |
468 | DEFAULT_NETWORK_VIEWER_PORT); | |
d3e2ba59 JD |
469 | if (ret < 0) { |
470 | PERROR("asprintf default viewer control address"); | |
178a0557 | 471 | retval = -1; |
d3e2ba59 JD |
472 | goto exit; |
473 | } | |
474 | ||
475 | ret = uri_parse(default_address, &live_uri); | |
476 | free(default_address); | |
477 | if (ret < 0) { | |
478 | ERR("Invalid viewer control URI specified"); | |
178a0557 | 479 | retval = -1; |
d3e2ba59 JD |
480 | goto exit; |
481 | } | |
482 | } | |
b8aa1682 JD |
483 | |
484 | exit: | |
cd60b05a | 485 | free(optstring); |
178a0557 | 486 | return retval; |
b8aa1682 JD |
487 | } |
488 | ||
7591bab1 MD |
489 | static void print_global_objects(void) |
490 | { | |
491 | rcu_register_thread(); | |
492 | ||
493 | print_viewer_streams(); | |
494 | print_relay_streams(); | |
495 | print_sessions(); | |
496 | ||
497 | rcu_unregister_thread(); | |
498 | } | |
499 | ||
b8aa1682 JD |
500 | /* |
501 | * Cleanup the daemon | |
502 | */ | |
7591bab1 | 503 | static void relayd_cleanup(void) |
b8aa1682 | 504 | { |
7591bab1 MD |
505 | print_global_objects(); |
506 | ||
b8aa1682 JD |
507 | DBG("Cleaning up"); |
508 | ||
178a0557 MD |
509 | if (viewer_streams_ht) |
510 | lttng_ht_destroy(viewer_streams_ht); | |
511 | if (relay_streams_ht) | |
512 | lttng_ht_destroy(relay_streams_ht); | |
7591bab1 MD |
513 | if (sessions_ht) |
514 | lttng_ht_destroy(sessions_ht); | |
178a0557 | 515 | |
095a4ae5 MD |
516 | /* free the dynamically allocated opt_output_path */ |
517 | free(opt_output_path); | |
518 | ||
a02de639 CB |
519 | /* Close thread quit pipes */ |
520 | utils_close_pipe(thread_quit_pipe); | |
521 | ||
710c1f73 DG |
522 | uri_free(control_uri); |
523 | uri_free(data_uri); | |
8d5c808e | 524 | /* Live URI is freed in the live thread. */ |
cd60b05a JG |
525 | |
526 | if (tracing_group_name_override) { | |
527 | free((void *) tracing_group_name); | |
528 | } | |
b8aa1682 JD |
529 | } |
530 | ||
531 | /* | |
532 | * Write to writable pipe used to notify a thread. | |
533 | */ | |
7591bab1 | 534 | static int notify_thread_pipe(int wpipe) |
b8aa1682 | 535 | { |
6cd525e8 | 536 | ssize_t ret; |
b8aa1682 | 537 | |
6cd525e8 MD |
538 | ret = lttng_write(wpipe, "!", 1); |
539 | if (ret < 1) { | |
b8aa1682 | 540 | PERROR("write poll pipe"); |
b4aacfdc | 541 | goto end; |
b8aa1682 | 542 | } |
b4aacfdc MD |
543 | ret = 0; |
544 | end: | |
b8aa1682 JD |
545 | return ret; |
546 | } | |
547 | ||
7591bab1 | 548 | static int notify_health_quit_pipe(int *pipe) |
65931c8b | 549 | { |
6cd525e8 | 550 | ssize_t ret; |
65931c8b | 551 | |
6cd525e8 MD |
552 | ret = lttng_write(pipe[1], "4", 1); |
553 | if (ret < 1) { | |
65931c8b | 554 | PERROR("write relay health quit"); |
b4aacfdc | 555 | goto end; |
65931c8b | 556 | } |
b4aacfdc MD |
557 | ret = 0; |
558 | end: | |
559 | return ret; | |
65931c8b MD |
560 | } |
561 | ||
b8aa1682 | 562 | /* |
b4aacfdc | 563 | * Stop all relayd and relayd-live threads. |
b8aa1682 | 564 | */ |
b4aacfdc | 565 | int lttng_relay_stop_threads(void) |
b8aa1682 | 566 | { |
b4aacfdc | 567 | int retval = 0; |
b8aa1682 JD |
568 | |
569 | /* Stopping all threads */ | |
570 | DBG("Terminating all threads"); | |
b4aacfdc | 571 | if (notify_thread_pipe(thread_quit_pipe[1])) { |
b8aa1682 | 572 | ERR("write error on thread quit pipe"); |
b4aacfdc | 573 | retval = -1; |
b8aa1682 JD |
574 | } |
575 | ||
b4aacfdc MD |
576 | if (notify_health_quit_pipe(health_quit_pipe)) { |
577 | ERR("write error on health quit pipe"); | |
578 | } | |
65931c8b | 579 | |
b8aa1682 | 580 | /* Dispatch thread */ |
26c9d55e | 581 | CMM_STORE_SHARED(dispatch_thread_exit, 1); |
58eb9381 | 582 | futex_nto1_wake(&relay_conn_queue.futex); |
178a0557 | 583 | |
b4aacfdc | 584 | if (relayd_live_stop()) { |
178a0557 | 585 | ERR("Error stopping live threads"); |
b4aacfdc | 586 | retval = -1; |
178a0557 | 587 | } |
b4aacfdc | 588 | return retval; |
b8aa1682 JD |
589 | } |
590 | ||
591 | /* | |
592 | * Signal handler for the daemon | |
593 | * | |
594 | * Simply stop all worker threads, leaving main() return gracefully after | |
595 | * joining all threads and calling cleanup(). | |
596 | */ | |
7591bab1 | 597 | static void sighandler(int sig) |
b8aa1682 JD |
598 | { |
599 | switch (sig) { | |
b8aa1682 JD |
600 | case SIGINT: |
601 | DBG("SIGINT caught"); | |
b4aacfdc MD |
602 | if (lttng_relay_stop_threads()) { |
603 | ERR("Error stopping threads"); | |
604 | } | |
b8aa1682 JD |
605 | break; |
606 | case SIGTERM: | |
607 | DBG("SIGTERM caught"); | |
b4aacfdc MD |
608 | if (lttng_relay_stop_threads()) { |
609 | ERR("Error stopping threads"); | |
610 | } | |
b8aa1682 | 611 | break; |
3fd27398 MD |
612 | case SIGUSR1: |
613 | CMM_STORE_SHARED(recv_child_signal, 1); | |
614 | break; | |
b8aa1682 JD |
615 | default: |
616 | break; | |
617 | } | |
618 | } | |
619 | ||
620 | /* | |
621 | * Setup signal handler for : | |
622 | * SIGINT, SIGTERM, SIGPIPE | |
623 | */ | |
7591bab1 | 624 | static int set_signal_handler(void) |
b8aa1682 JD |
625 | { |
626 | int ret = 0; | |
627 | struct sigaction sa; | |
628 | sigset_t sigset; | |
629 | ||
630 | if ((ret = sigemptyset(&sigset)) < 0) { | |
631 | PERROR("sigemptyset"); | |
632 | return ret; | |
633 | } | |
634 | ||
b8aa1682 JD |
635 | sa.sa_mask = sigset; |
636 | sa.sa_flags = 0; | |
0072e5e2 MD |
637 | |
638 | sa.sa_handler = sighandler; | |
b8aa1682 JD |
639 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
640 | PERROR("sigaction"); | |
641 | return ret; | |
642 | } | |
643 | ||
644 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { | |
645 | PERROR("sigaction"); | |
646 | return ret; | |
647 | } | |
648 | ||
0072e5e2 | 649 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
b8aa1682 JD |
650 | PERROR("sigaction"); |
651 | return ret; | |
652 | } | |
653 | ||
0072e5e2 MD |
654 | sa.sa_handler = SIG_IGN; |
655 | if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) { | |
3fd27398 MD |
656 | PERROR("sigaction"); |
657 | return ret; | |
658 | } | |
659 | ||
660 | DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT"); | |
b8aa1682 JD |
661 | |
662 | return ret; | |
663 | } | |
664 | ||
3fd27398 MD |
665 | void lttng_relay_notify_ready(void) |
666 | { | |
667 | /* Notify the parent of the fork() process that we are ready. */ | |
668 | if (opt_daemon || opt_background) { | |
669 | if (uatomic_sub_return(<tng_relay_ready, 1) == 0) { | |
670 | kill(child_ppid, SIGUSR1); | |
671 | } | |
672 | } | |
673 | } | |
674 | ||
b8aa1682 JD |
675 | /* |
676 | * Init thread quit pipe. | |
677 | * | |
678 | * Return -1 on error or 0 if all pipes are created. | |
679 | */ | |
7591bab1 | 680 | static int init_thread_quit_pipe(void) |
b8aa1682 | 681 | { |
a02de639 | 682 | int ret; |
b8aa1682 | 683 | |
a02de639 | 684 | ret = utils_create_pipe_cloexec(thread_quit_pipe); |
b8aa1682 | 685 | |
b8aa1682 JD |
686 | return ret; |
687 | } | |
688 | ||
689 | /* | |
690 | * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set. | |
691 | */ | |
7591bab1 | 692 | static int create_thread_poll_set(struct lttng_poll_event *events, int size) |
b8aa1682 JD |
693 | { |
694 | int ret; | |
695 | ||
696 | if (events == NULL || size == 0) { | |
697 | ret = -1; | |
698 | goto error; | |
699 | } | |
700 | ||
701 | ret = lttng_poll_create(events, size, LTTNG_CLOEXEC); | |
702 | if (ret < 0) { | |
703 | goto error; | |
704 | } | |
705 | ||
706 | /* Add quit pipe */ | |
c7759e6a | 707 | ret = lttng_poll_add(events, thread_quit_pipe[0], LPOLLIN | LPOLLERR); |
b8aa1682 JD |
708 | if (ret < 0) { |
709 | goto error; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | ||
714 | error: | |
715 | return ret; | |
716 | } | |
717 | ||
718 | /* | |
719 | * Check if the thread quit pipe was triggered. | |
720 | * | |
721 | * Return 1 if it was triggered else 0; | |
722 | */ | |
7591bab1 | 723 | static int check_thread_quit_pipe(int fd, uint32_t events) |
b8aa1682 JD |
724 | { |
725 | if (fd == thread_quit_pipe[0] && (events & LPOLLIN)) { | |
726 | return 1; | |
727 | } | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | /* | |
733 | * Create and init socket from uri. | |
734 | */ | |
7591bab1 | 735 | static struct lttcomm_sock *relay_socket_create(struct lttng_uri *uri) |
b8aa1682 JD |
736 | { |
737 | int ret; | |
738 | struct lttcomm_sock *sock = NULL; | |
739 | ||
740 | sock = lttcomm_alloc_sock_from_uri(uri); | |
741 | if (sock == NULL) { | |
742 | ERR("Allocating socket"); | |
743 | goto error; | |
744 | } | |
745 | ||
746 | ret = lttcomm_create_sock(sock); | |
747 | if (ret < 0) { | |
748 | goto error; | |
749 | } | |
750 | DBG("Listening on sock %d", sock->fd); | |
751 | ||
752 | ret = sock->ops->bind(sock); | |
753 | if (ret < 0) { | |
2288467f | 754 | PERROR("Failed to bind socket"); |
b8aa1682 JD |
755 | goto error; |
756 | } | |
757 | ||
758 | ret = sock->ops->listen(sock, -1); | |
759 | if (ret < 0) { | |
760 | goto error; | |
761 | ||
762 | } | |
763 | ||
764 | return sock; | |
765 | ||
766 | error: | |
767 | if (sock) { | |
768 | lttcomm_destroy_sock(sock); | |
769 | } | |
770 | return NULL; | |
771 | } | |
772 | ||
773 | /* | |
774 | * This thread manages the listening for new connections on the network | |
775 | */ | |
7591bab1 | 776 | static void *relay_thread_listener(void *data) |
b8aa1682 | 777 | { |
095a4ae5 | 778 | int i, ret, pollfd, err = -1; |
b8aa1682 JD |
779 | uint32_t revents, nb_fd; |
780 | struct lttng_poll_event events; | |
781 | struct lttcomm_sock *control_sock, *data_sock; | |
782 | ||
b8aa1682 JD |
783 | DBG("[thread] Relay listener started"); |
784 | ||
55706a7d MD |
785 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LISTENER); |
786 | ||
f385ae0a MD |
787 | health_code_update(); |
788 | ||
7591bab1 | 789 | control_sock = relay_socket_create(control_uri); |
b8aa1682 | 790 | if (!control_sock) { |
095a4ae5 | 791 | goto error_sock_control; |
b8aa1682 JD |
792 | } |
793 | ||
7591bab1 | 794 | data_sock = relay_socket_create(data_uri); |
b8aa1682 | 795 | if (!data_sock) { |
095a4ae5 | 796 | goto error_sock_relay; |
b8aa1682 JD |
797 | } |
798 | ||
799 | /* | |
7591bab1 MD |
800 | * Pass 3 as size here for the thread quit pipe, control and |
801 | * data socket. | |
b8aa1682 JD |
802 | */ |
803 | ret = create_thread_poll_set(&events, 3); | |
804 | if (ret < 0) { | |
805 | goto error_create_poll; | |
806 | } | |
807 | ||
808 | /* Add the control socket */ | |
809 | ret = lttng_poll_add(&events, control_sock->fd, LPOLLIN | LPOLLRDHUP); | |
810 | if (ret < 0) { | |
811 | goto error_poll_add; | |
812 | } | |
813 | ||
814 | /* Add the data socket */ | |
815 | ret = lttng_poll_add(&events, data_sock->fd, LPOLLIN | LPOLLRDHUP); | |
816 | if (ret < 0) { | |
817 | goto error_poll_add; | |
818 | } | |
819 | ||
3fd27398 MD |
820 | lttng_relay_notify_ready(); |
821 | ||
9b5e0863 MD |
822 | if (testpoint(relayd_thread_listener)) { |
823 | goto error_testpoint; | |
824 | } | |
825 | ||
b8aa1682 | 826 | while (1) { |
f385ae0a MD |
827 | health_code_update(); |
828 | ||
b8aa1682 JD |
829 | DBG("Listener accepting connections"); |
830 | ||
b8aa1682 | 831 | restart: |
f385ae0a | 832 | health_poll_entry(); |
b8aa1682 | 833 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 834 | health_poll_exit(); |
b8aa1682 JD |
835 | if (ret < 0) { |
836 | /* | |
837 | * Restart interrupted system call. | |
838 | */ | |
839 | if (errno == EINTR) { | |
840 | goto restart; | |
841 | } | |
842 | goto error; | |
843 | } | |
844 | ||
0d9c5d77 DG |
845 | nb_fd = ret; |
846 | ||
b8aa1682 JD |
847 | DBG("Relay new connection received"); |
848 | for (i = 0; i < nb_fd; i++) { | |
f385ae0a MD |
849 | health_code_update(); |
850 | ||
b8aa1682 JD |
851 | /* Fetch once the poll data */ |
852 | revents = LTTNG_POLL_GETEV(&events, i); | |
853 | pollfd = LTTNG_POLL_GETFD(&events, i); | |
854 | ||
fd20dac9 | 855 | if (!revents) { |
7591bab1 MD |
856 | /* |
857 | * No activity for this FD (poll | |
858 | * implementation). | |
859 | */ | |
fd20dac9 MD |
860 | continue; |
861 | } | |
862 | ||
b8aa1682 JD |
863 | /* Thread quit pipe has been closed. Killing thread. */ |
864 | ret = check_thread_quit_pipe(pollfd, revents); | |
865 | if (ret) { | |
095a4ae5 MD |
866 | err = 0; |
867 | goto exit; | |
b8aa1682 JD |
868 | } |
869 | ||
03e43155 | 870 | if (revents & LPOLLIN) { |
4b7f17b2 | 871 | /* |
7591bab1 MD |
872 | * A new connection is requested, therefore a |
873 | * sessiond/consumerd connection is allocated in | |
874 | * this thread, enqueued to a global queue and | |
875 | * dequeued (and freed) in the worker thread. | |
4b7f17b2 | 876 | */ |
58eb9381 DG |
877 | int val = 1; |
878 | struct relay_connection *new_conn; | |
4b7f17b2 | 879 | struct lttcomm_sock *newsock; |
7591bab1 | 880 | enum connection_type type; |
b8aa1682 JD |
881 | |
882 | if (pollfd == data_sock->fd) { | |
7591bab1 | 883 | type = RELAY_DATA; |
b8aa1682 | 884 | newsock = data_sock->ops->accept(data_sock); |
58eb9381 DG |
885 | DBG("Relay data connection accepted, socket %d", |
886 | newsock->fd); | |
4b7f17b2 MD |
887 | } else { |
888 | assert(pollfd == control_sock->fd); | |
7591bab1 | 889 | type = RELAY_CONTROL; |
b8aa1682 | 890 | newsock = control_sock->ops->accept(control_sock); |
58eb9381 DG |
891 | DBG("Relay control connection accepted, socket %d", |
892 | newsock->fd); | |
b8aa1682 | 893 | } |
58eb9381 DG |
894 | if (!newsock) { |
895 | PERROR("accepting sock"); | |
58eb9381 DG |
896 | goto error; |
897 | } | |
898 | ||
899 | ret = setsockopt(newsock->fd, SOL_SOCKET, SO_REUSEADDR, &val, | |
900 | sizeof(val)); | |
b8aa1682 JD |
901 | if (ret < 0) { |
902 | PERROR("setsockopt inet"); | |
4b7f17b2 | 903 | lttcomm_destroy_sock(newsock); |
b8aa1682 JD |
904 | goto error; |
905 | } | |
f056029c JR |
906 | |
907 | ret = socket_apply_keep_alive_config(newsock->fd); | |
908 | if (ret < 0) { | |
909 | ERR("Failed to apply TCP keep-alive configuration on socket (%i)", | |
910 | newsock->fd); | |
911 | lttcomm_destroy_sock(newsock); | |
912 | goto error; | |
913 | } | |
914 | ||
7591bab1 MD |
915 | new_conn = connection_create(newsock, type); |
916 | if (!new_conn) { | |
917 | lttcomm_destroy_sock(newsock); | |
918 | goto error; | |
919 | } | |
58eb9381 DG |
920 | |
921 | /* Enqueue request for the dispatcher thread. */ | |
8bdee6e2 SM |
922 | cds_wfcq_enqueue(&relay_conn_queue.head, &relay_conn_queue.tail, |
923 | &new_conn->qnode); | |
b8aa1682 JD |
924 | |
925 | /* | |
7591bab1 MD |
926 | * Wake the dispatch queue futex. |
927 | * Implicit memory barrier with the | |
928 | * exchange in cds_wfcq_enqueue. | |
b8aa1682 | 929 | */ |
58eb9381 | 930 | futex_nto1_wake(&relay_conn_queue.futex); |
03e43155 MD |
931 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
932 | ERR("socket poll error"); | |
933 | goto error; | |
934 | } else { | |
935 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
936 | goto error; | |
b8aa1682 JD |
937 | } |
938 | } | |
939 | } | |
940 | ||
095a4ae5 | 941 | exit: |
b8aa1682 JD |
942 | error: |
943 | error_poll_add: | |
9b5e0863 | 944 | error_testpoint: |
b8aa1682 JD |
945 | lttng_poll_clean(&events); |
946 | error_create_poll: | |
095a4ae5 MD |
947 | if (data_sock->fd >= 0) { |
948 | ret = data_sock->ops->close(data_sock); | |
b8aa1682 JD |
949 | if (ret) { |
950 | PERROR("close"); | |
951 | } | |
b8aa1682 | 952 | } |
095a4ae5 MD |
953 | lttcomm_destroy_sock(data_sock); |
954 | error_sock_relay: | |
955 | if (control_sock->fd >= 0) { | |
956 | ret = control_sock->ops->close(control_sock); | |
b8aa1682 JD |
957 | if (ret) { |
958 | PERROR("close"); | |
959 | } | |
b8aa1682 | 960 | } |
095a4ae5 MD |
961 | lttcomm_destroy_sock(control_sock); |
962 | error_sock_control: | |
963 | if (err) { | |
f385ae0a MD |
964 | health_error(); |
965 | ERR("Health error occurred in %s", __func__); | |
095a4ae5 | 966 | } |
55706a7d | 967 | health_unregister(health_relayd); |
b8aa1682 | 968 | DBG("Relay listener thread cleanup complete"); |
b4aacfdc | 969 | lttng_relay_stop_threads(); |
b8aa1682 JD |
970 | return NULL; |
971 | } | |
972 | ||
973 | /* | |
974 | * This thread manages the dispatching of the requests to worker threads | |
975 | */ | |
7591bab1 | 976 | static void *relay_thread_dispatcher(void *data) |
b8aa1682 | 977 | { |
6cd525e8 MD |
978 | int err = -1; |
979 | ssize_t ret; | |
8bdee6e2 | 980 | struct cds_wfcq_node *node; |
58eb9381 | 981 | struct relay_connection *new_conn = NULL; |
b8aa1682 JD |
982 | |
983 | DBG("[thread] Relay dispatcher started"); | |
984 | ||
55706a7d MD |
985 | health_register(health_relayd, HEALTH_RELAYD_TYPE_DISPATCHER); |
986 | ||
9b5e0863 MD |
987 | if (testpoint(relayd_thread_dispatcher)) { |
988 | goto error_testpoint; | |
989 | } | |
990 | ||
f385ae0a MD |
991 | health_code_update(); |
992 | ||
0ed3b1a8 | 993 | for (;;) { |
f385ae0a MD |
994 | health_code_update(); |
995 | ||
b8aa1682 | 996 | /* Atomically prepare the queue futex */ |
58eb9381 | 997 | futex_nto1_prepare(&relay_conn_queue.futex); |
b8aa1682 | 998 | |
0ed3b1a8 MD |
999 | if (CMM_LOAD_SHARED(dispatch_thread_exit)) { |
1000 | break; | |
1001 | } | |
1002 | ||
b8aa1682 | 1003 | do { |
f385ae0a MD |
1004 | health_code_update(); |
1005 | ||
b8aa1682 | 1006 | /* Dequeue commands */ |
8bdee6e2 SM |
1007 | node = cds_wfcq_dequeue_blocking(&relay_conn_queue.head, |
1008 | &relay_conn_queue.tail); | |
b8aa1682 JD |
1009 | if (node == NULL) { |
1010 | DBG("Woken up but nothing in the relay command queue"); | |
1011 | /* Continue thread execution */ | |
1012 | break; | |
1013 | } | |
58eb9381 | 1014 | new_conn = caa_container_of(node, struct relay_connection, qnode); |
b8aa1682 | 1015 | |
58eb9381 | 1016 | DBG("Dispatching request waiting on sock %d", new_conn->sock->fd); |
b8aa1682 JD |
1017 | |
1018 | /* | |
7591bab1 MD |
1019 | * Inform worker thread of the new request. This |
1020 | * call is blocking so we can be assured that | |
1021 | * the data will be read at some point in time | |
1022 | * or wait to the end of the world :) | |
b8aa1682 | 1023 | */ |
58eb9381 DG |
1024 | ret = lttng_write(relay_conn_pipe[1], &new_conn, sizeof(new_conn)); |
1025 | if (ret < 0) { | |
1026 | PERROR("write connection pipe"); | |
7591bab1 | 1027 | connection_put(new_conn); |
b8aa1682 JD |
1028 | goto error; |
1029 | } | |
1030 | } while (node != NULL); | |
1031 | ||
1032 | /* Futex wait on queue. Blocking call on futex() */ | |
f385ae0a | 1033 | health_poll_entry(); |
58eb9381 | 1034 | futex_nto1_wait(&relay_conn_queue.futex); |
f385ae0a | 1035 | health_poll_exit(); |
b8aa1682 JD |
1036 | } |
1037 | ||
f385ae0a MD |
1038 | /* Normal exit, no error */ |
1039 | err = 0; | |
1040 | ||
b8aa1682 | 1041 | error: |
9b5e0863 | 1042 | error_testpoint: |
f385ae0a MD |
1043 | if (err) { |
1044 | health_error(); | |
1045 | ERR("Health error occurred in %s", __func__); | |
1046 | } | |
55706a7d | 1047 | health_unregister(health_relayd); |
b8aa1682 | 1048 | DBG("Dispatch thread dying"); |
b4aacfdc | 1049 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1050 | return NULL; |
1051 | } | |
1052 | ||
b8aa1682 | 1053 | /* |
7591bab1 | 1054 | * Set index data from the control port to a given index object. |
b8aa1682 | 1055 | */ |
7591bab1 | 1056 | static int set_index_control_data(struct relay_index *index, |
234cd636 JD |
1057 | struct lttcomm_relayd_index *data, |
1058 | struct relay_connection *conn) | |
1c20f0e2 | 1059 | { |
7591bab1 | 1060 | struct ctf_packet_index index_data; |
1c20f0e2 JD |
1061 | |
1062 | /* | |
7591bab1 MD |
1063 | * The index on disk is encoded in big endian, so we don't need |
1064 | * to convert the data received on the network. The data_offset | |
1065 | * value is NEVER modified here and is updated by the data | |
1066 | * thread. | |
1c20f0e2 | 1067 | */ |
7591bab1 MD |
1068 | index_data.packet_size = data->packet_size; |
1069 | index_data.content_size = data->content_size; | |
1070 | index_data.timestamp_begin = data->timestamp_begin; | |
1071 | index_data.timestamp_end = data->timestamp_end; | |
1072 | index_data.events_discarded = data->events_discarded; | |
1073 | index_data.stream_id = data->stream_id; | |
234cd636 JD |
1074 | |
1075 | if (conn->minor >= 8) { | |
1076 | index->index_data.stream_instance_id = data->stream_instance_id; | |
1077 | index->index_data.packet_seq_num = data->packet_seq_num; | |
1078 | } | |
1079 | ||
7591bab1 | 1080 | return relay_index_set_data(index, &index_data); |
1c20f0e2 JD |
1081 | } |
1082 | ||
c5b6f4f0 DG |
1083 | /* |
1084 | * Handle the RELAYD_CREATE_SESSION command. | |
1085 | * | |
1086 | * On success, send back the session id or else return a negative value. | |
1087 | */ | |
7591bab1 | 1088 | static int relay_create_session(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1089 | struct relay_connection *conn) |
c5b6f4f0 DG |
1090 | { |
1091 | int ret = 0, send_ret; | |
1092 | struct relay_session *session; | |
1093 | struct lttcomm_relayd_status_session reply; | |
36d2e35d | 1094 | char session_name[LTTNG_NAME_MAX]; |
9cf3eb20 | 1095 | char hostname[LTTNG_HOST_NAME_MAX]; |
7591bab1 MD |
1096 | uint32_t live_timer = 0; |
1097 | bool snapshot = false; | |
c5b6f4f0 | 1098 | |
36d2e35d | 1099 | memset(session_name, 0, LTTNG_NAME_MAX); |
9cf3eb20 | 1100 | memset(hostname, 0, LTTNG_HOST_NAME_MAX); |
c5b6f4f0 DG |
1101 | |
1102 | memset(&reply, 0, sizeof(reply)); | |
1103 | ||
58eb9381 | 1104 | switch (conn->minor) { |
2a174661 DG |
1105 | case 1: |
1106 | case 2: | |
1107 | case 3: | |
1108 | break; | |
1109 | case 4: /* LTTng sessiond 2.4 */ | |
1110 | default: | |
7591bab1 MD |
1111 | ret = cmd_create_session_2_4(conn, session_name, |
1112 | hostname, &live_timer, &snapshot); | |
1113 | } | |
1114 | if (ret < 0) { | |
1115 | goto send_reply; | |
d3e2ba59 JD |
1116 | } |
1117 | ||
7591bab1 MD |
1118 | session = session_create(session_name, hostname, live_timer, |
1119 | snapshot, conn->major, conn->minor); | |
1120 | if (!session) { | |
1121 | ret = -1; | |
1122 | goto send_reply; | |
1123 | } | |
1124 | assert(!conn->session); | |
1125 | conn->session = session; | |
c5b6f4f0 DG |
1126 | DBG("Created session %" PRIu64, session->id); |
1127 | ||
7591bab1 MD |
1128 | reply.session_id = htobe64(session->id); |
1129 | ||
1130 | send_reply: | |
c5b6f4f0 DG |
1131 | if (ret < 0) { |
1132 | reply.ret_code = htobe32(LTTNG_ERR_FATAL); | |
1133 | } else { | |
1134 | reply.ret_code = htobe32(LTTNG_OK); | |
1135 | } | |
1136 | ||
58eb9381 | 1137 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
c5b6f4f0 DG |
1138 | if (send_ret < 0) { |
1139 | ERR("Relayd sending session id"); | |
4169f5ad | 1140 | ret = send_ret; |
c5b6f4f0 DG |
1141 | } |
1142 | ||
1143 | return ret; | |
1144 | } | |
1145 | ||
a4baae1b JD |
1146 | /* |
1147 | * When we have received all the streams and the metadata for a channel, | |
1148 | * we make them visible to the viewer threads. | |
1149 | */ | |
7591bab1 | 1150 | static void publish_connection_local_streams(struct relay_connection *conn) |
a4baae1b | 1151 | { |
7591bab1 MD |
1152 | struct relay_stream *stream; |
1153 | struct relay_session *session = conn->session; | |
a4baae1b | 1154 | |
7591bab1 MD |
1155 | /* |
1156 | * We publish all streams belonging to a session atomically wrt | |
1157 | * session lock. | |
1158 | */ | |
1159 | pthread_mutex_lock(&session->lock); | |
1160 | rcu_read_lock(); | |
1161 | cds_list_for_each_entry_rcu(stream, &session->recv_list, | |
1162 | recv_node) { | |
1163 | stream_publish(stream); | |
a4baae1b | 1164 | } |
7591bab1 | 1165 | rcu_read_unlock(); |
a4baae1b | 1166 | |
7591bab1 MD |
1167 | /* |
1168 | * Inform the viewer that there are new streams in the session. | |
1169 | */ | |
1170 | if (session->viewer_attached) { | |
1171 | uatomic_set(&session->new_streams, 1); | |
1172 | } | |
1173 | pthread_mutex_unlock(&session->lock); | |
a4baae1b JD |
1174 | } |
1175 | ||
b8aa1682 JD |
1176 | /* |
1177 | * relay_add_stream: allocate a new stream for a session | |
1178 | */ | |
7591bab1 | 1179 | static int relay_add_stream(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1180 | struct relay_connection *conn) |
b8aa1682 | 1181 | { |
7591bab1 MD |
1182 | int ret; |
1183 | ssize_t send_ret; | |
58eb9381 | 1184 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1185 | struct relay_stream *stream = NULL; |
1186 | struct lttcomm_relayd_status_stream reply; | |
4030a636 | 1187 | struct ctf_trace *trace = NULL; |
7591bab1 MD |
1188 | uint64_t stream_handle = -1ULL; |
1189 | char *path_name = NULL, *channel_name = NULL; | |
1190 | uint64_t tracefile_size = 0, tracefile_count = 0; | |
b8aa1682 | 1191 | |
58eb9381 | 1192 | if (!session || conn->version_check_done == 0) { |
b8aa1682 JD |
1193 | ERR("Trying to add a stream before version check"); |
1194 | ret = -1; | |
1195 | goto end_no_session; | |
1196 | } | |
1197 | ||
7591bab1 MD |
1198 | switch (session->minor) { |
1199 | case 1: /* LTTng sessiond 2.1. Allocates path_name and channel_name. */ | |
1200 | ret = cmd_recv_stream_2_1(conn, &path_name, | |
1201 | &channel_name); | |
0f907de1 | 1202 | break; |
7591bab1 | 1203 | case 2: /* LTTng sessiond 2.2. Allocates path_name and channel_name. */ |
0f907de1 | 1204 | default: |
7591bab1 MD |
1205 | ret = cmd_recv_stream_2_2(conn, &path_name, |
1206 | &channel_name, &tracefile_size, &tracefile_count); | |
0f907de1 JD |
1207 | break; |
1208 | } | |
1209 | if (ret < 0) { | |
7591bab1 | 1210 | goto send_reply; |
b8aa1682 JD |
1211 | } |
1212 | ||
7591bab1 | 1213 | trace = ctf_trace_get_by_path_or_create(session, path_name); |
2a174661 | 1214 | if (!trace) { |
7591bab1 | 1215 | goto send_reply; |
2a174661 | 1216 | } |
7591bab1 | 1217 | /* This stream here has one reference on the trace. */ |
2a174661 | 1218 | |
7591bab1 MD |
1219 | pthread_mutex_lock(&last_relay_stream_id_lock); |
1220 | stream_handle = ++last_relay_stream_id; | |
1221 | pthread_mutex_unlock(&last_relay_stream_id_lock); | |
d3e2ba59 | 1222 | |
7591bab1 MD |
1223 | /* We pass ownership of path_name and channel_name. */ |
1224 | stream = stream_create(trace, stream_handle, path_name, | |
1225 | channel_name, tracefile_size, tracefile_count); | |
1226 | path_name = NULL; | |
1227 | channel_name = NULL; | |
a4baae1b | 1228 | |
2a174661 | 1229 | /* |
7591bab1 MD |
1230 | * Streams are the owners of their trace. Reference to trace is |
1231 | * kept within stream_create(). | |
2a174661 | 1232 | */ |
7591bab1 | 1233 | ctf_trace_put(trace); |
d3e2ba59 | 1234 | |
7591bab1 | 1235 | send_reply: |
53efb85a | 1236 | memset(&reply, 0, sizeof(reply)); |
7591bab1 MD |
1237 | reply.handle = htobe64(stream_handle); |
1238 | if (!stream) { | |
f73fabfd | 1239 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
b8aa1682 | 1240 | } else { |
f73fabfd | 1241 | reply.ret_code = htobe32(LTTNG_OK); |
b8aa1682 | 1242 | } |
5af40280 | 1243 | |
58eb9381 | 1244 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 JD |
1245 | sizeof(struct lttcomm_relayd_status_stream), 0); |
1246 | if (send_ret < 0) { | |
1247 | ERR("Relay sending stream id"); | |
7591bab1 | 1248 | ret = (int) send_ret; |
b8aa1682 JD |
1249 | } |
1250 | ||
1251 | end_no_session: | |
7591bab1 MD |
1252 | free(path_name); |
1253 | free(channel_name); | |
0f907de1 | 1254 | return ret; |
b8aa1682 JD |
1255 | } |
1256 | ||
173af62f DG |
1257 | /* |
1258 | * relay_close_stream: close a specific stream | |
1259 | */ | |
7591bab1 | 1260 | static int relay_close_stream(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1261 | struct relay_connection *conn) |
173af62f | 1262 | { |
94d49140 | 1263 | int ret, send_ret; |
58eb9381 | 1264 | struct relay_session *session = conn->session; |
173af62f DG |
1265 | struct lttcomm_relayd_close_stream stream_info; |
1266 | struct lttcomm_relayd_generic_reply reply; | |
1267 | struct relay_stream *stream; | |
173af62f DG |
1268 | |
1269 | DBG("Close stream received"); | |
1270 | ||
58eb9381 | 1271 | if (!session || conn->version_check_done == 0) { |
173af62f DG |
1272 | ERR("Trying to close a stream before version check"); |
1273 | ret = -1; | |
1274 | goto end_no_session; | |
1275 | } | |
1276 | ||
58eb9381 | 1277 | ret = conn->sock->ops->recvmsg(conn->sock, &stream_info, |
7c5aef62 | 1278 | sizeof(struct lttcomm_relayd_close_stream), 0); |
173af62f | 1279 | if (ret < sizeof(struct lttcomm_relayd_close_stream)) { |
a6cd2b97 DG |
1280 | if (ret == 0) { |
1281 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 1282 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
1283 | } else { |
1284 | ERR("Relay didn't receive valid add_stream struct size : %d", ret); | |
1285 | } | |
173af62f DG |
1286 | ret = -1; |
1287 | goto end_no_session; | |
1288 | } | |
1289 | ||
7591bab1 | 1290 | stream = stream_get_by_id(be64toh(stream_info.stream_id)); |
173af62f DG |
1291 | if (!stream) { |
1292 | ret = -1; | |
7591bab1 | 1293 | goto end; |
173af62f | 1294 | } |
77f7bd85 MD |
1295 | |
1296 | /* | |
1297 | * Set last_net_seq_num before the close flag. Required by data | |
1298 | * pending check. | |
1299 | */ | |
7591bab1 | 1300 | pthread_mutex_lock(&stream->lock); |
8e2583a4 | 1301 | stream->last_net_seq_num = be64toh(stream_info.last_net_seq_num); |
77f7bd85 MD |
1302 | pthread_mutex_unlock(&stream->lock); |
1303 | ||
bda7c7b9 JG |
1304 | /* |
1305 | * This is one of the conditions which may trigger a stream close | |
1306 | * with the others being: | |
1307 | * 1) A close command is received for a stream | |
1308 | * 2) The control connection owning the stream is closed | |
1309 | * 3) We have received all of the stream's data _after_ a close | |
1310 | * request. | |
1311 | */ | |
1312 | try_stream_close(stream); | |
7591bab1 MD |
1313 | if (stream->is_metadata) { |
1314 | struct relay_viewer_stream *vstream; | |
173af62f | 1315 | |
7591bab1 MD |
1316 | vstream = viewer_stream_get_by_id(stream->stream_handle); |
1317 | if (vstream) { | |
1318 | if (vstream->metadata_sent == stream->metadata_received) { | |
1319 | /* | |
1320 | * Since all the metadata has been sent to the | |
1321 | * viewer and that we have a request to close | |
1322 | * its stream, we can safely teardown the | |
1323 | * corresponding metadata viewer stream. | |
1324 | */ | |
1325 | viewer_stream_put(vstream); | |
1326 | } | |
1327 | /* Put local reference. */ | |
1328 | viewer_stream_put(vstream); | |
1329 | } | |
1330 | } | |
7591bab1 | 1331 | stream_put(stream); |
173af62f | 1332 | |
7591bab1 | 1333 | end: |
53efb85a | 1334 | memset(&reply, 0, sizeof(reply)); |
173af62f | 1335 | if (ret < 0) { |
f73fabfd | 1336 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
173af62f | 1337 | } else { |
f73fabfd | 1338 | reply.ret_code = htobe32(LTTNG_OK); |
173af62f | 1339 | } |
58eb9381 | 1340 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
173af62f DG |
1341 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
1342 | if (send_ret < 0) { | |
1343 | ERR("Relay sending stream id"); | |
4169f5ad | 1344 | ret = send_ret; |
173af62f DG |
1345 | } |
1346 | ||
1347 | end_no_session: | |
1348 | return ret; | |
1349 | } | |
1350 | ||
93ec662e JD |
1351 | /* |
1352 | * relay_reset_metadata: reset a metadata stream | |
1353 | */ | |
1354 | static | |
1355 | int relay_reset_metadata(struct lttcomm_relayd_hdr *recv_hdr, | |
1356 | struct relay_connection *conn) | |
1357 | { | |
1358 | int ret, send_ret; | |
1359 | struct relay_session *session = conn->session; | |
1360 | struct lttcomm_relayd_reset_metadata stream_info; | |
1361 | struct lttcomm_relayd_generic_reply reply; | |
1362 | struct relay_stream *stream; | |
1363 | ||
1364 | DBG("Reset metadata received"); | |
1365 | ||
1366 | if (!session || conn->version_check_done == 0) { | |
1367 | ERR("Trying to reset a metadata stream before version check"); | |
1368 | ret = -1; | |
1369 | goto end_no_session; | |
1370 | } | |
1371 | ||
1372 | ret = conn->sock->ops->recvmsg(conn->sock, &stream_info, | |
1373 | sizeof(struct lttcomm_relayd_reset_metadata), 0); | |
1374 | if (ret < sizeof(struct lttcomm_relayd_reset_metadata)) { | |
1375 | if (ret == 0) { | |
1376 | /* Orderly shutdown. Not necessary to print an error. */ | |
1377 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
1378 | } else { | |
1379 | ERR("Relay didn't receive valid reset_metadata struct " | |
1380 | "size : %d", ret); | |
1381 | } | |
1382 | ret = -1; | |
1383 | goto end_no_session; | |
1384 | } | |
1385 | DBG("Update metadata to version %" PRIu64, be64toh(stream_info.version)); | |
1386 | ||
1387 | /* Unsupported for live sessions for now. */ | |
1388 | if (session->live_timer != 0) { | |
1389 | ret = -1; | |
1390 | goto end; | |
1391 | } | |
1392 | ||
1393 | stream = stream_get_by_id(be64toh(stream_info.stream_id)); | |
1394 | if (!stream) { | |
1395 | ret = -1; | |
1396 | goto end; | |
1397 | } | |
1398 | pthread_mutex_lock(&stream->lock); | |
1399 | if (!stream->is_metadata) { | |
1400 | ret = -1; | |
1401 | goto end_unlock; | |
1402 | } | |
1403 | ||
1404 | ret = utils_rotate_stream_file(stream->path_name, stream->channel_name, | |
1405 | 0, 0, -1, -1, stream->stream_fd->fd, NULL, | |
1406 | &stream->stream_fd->fd); | |
1407 | if (ret < 0) { | |
1408 | ERR("Failed to rotate metadata file %s of channel %s", | |
1409 | stream->path_name, stream->channel_name); | |
1410 | goto end_unlock; | |
1411 | } | |
1412 | ||
1413 | end_unlock: | |
1414 | pthread_mutex_unlock(&stream->lock); | |
1415 | stream_put(stream); | |
1416 | ||
1417 | end: | |
1418 | memset(&reply, 0, sizeof(reply)); | |
1419 | if (ret < 0) { | |
1420 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
1421 | } else { | |
1422 | reply.ret_code = htobe32(LTTNG_OK); | |
1423 | } | |
1424 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1425 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
1426 | if (send_ret < 0) { | |
1427 | ERR("Relay sending reset metadata reply"); | |
1428 | ret = send_ret; | |
1429 | } | |
1430 | ||
1431 | end_no_session: | |
1432 | return ret; | |
1433 | } | |
1434 | ||
b8aa1682 JD |
1435 | /* |
1436 | * relay_unknown_command: send -1 if received unknown command | |
1437 | */ | |
7591bab1 | 1438 | static void relay_unknown_command(struct relay_connection *conn) |
b8aa1682 JD |
1439 | { |
1440 | struct lttcomm_relayd_generic_reply reply; | |
1441 | int ret; | |
1442 | ||
53efb85a | 1443 | memset(&reply, 0, sizeof(reply)); |
f73fabfd | 1444 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
58eb9381 | 1445 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 JD |
1446 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
1447 | if (ret < 0) { | |
1448 | ERR("Relay sending unknown command"); | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | /* | |
1453 | * relay_start: send an acknowledgment to the client to tell if we are | |
1454 | * ready to receive data. We are ready if a session is established. | |
1455 | */ | |
7591bab1 | 1456 | static int relay_start(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1457 | struct relay_connection *conn) |
b8aa1682 | 1458 | { |
f73fabfd | 1459 | int ret = htobe32(LTTNG_OK); |
b8aa1682 | 1460 | struct lttcomm_relayd_generic_reply reply; |
58eb9381 | 1461 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1462 | |
1463 | if (!session) { | |
1464 | DBG("Trying to start the streaming without a session established"); | |
f73fabfd | 1465 | ret = htobe32(LTTNG_ERR_UNK); |
b8aa1682 JD |
1466 | } |
1467 | ||
53efb85a | 1468 | memset(&reply, 0, sizeof(reply)); |
b8aa1682 | 1469 | reply.ret_code = ret; |
58eb9381 | 1470 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 JD |
1471 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
1472 | if (ret < 0) { | |
1473 | ERR("Relay sending start ack"); | |
1474 | } | |
1475 | ||
1476 | return ret; | |
1477 | } | |
1478 | ||
1d4dfdef DG |
1479 | /* |
1480 | * Append padding to the file pointed by the file descriptor fd. | |
1481 | */ | |
1482 | static int write_padding_to_file(int fd, uint32_t size) | |
1483 | { | |
6cd525e8 | 1484 | ssize_t ret = 0; |
1d4dfdef DG |
1485 | char *zeros; |
1486 | ||
1487 | if (size == 0) { | |
1488 | goto end; | |
1489 | } | |
1490 | ||
1491 | zeros = zmalloc(size); | |
1492 | if (zeros == NULL) { | |
1493 | PERROR("zmalloc zeros for padding"); | |
1494 | ret = -1; | |
1495 | goto end; | |
1496 | } | |
1497 | ||
6cd525e8 MD |
1498 | ret = lttng_write(fd, zeros, size); |
1499 | if (ret < size) { | |
1d4dfdef DG |
1500 | PERROR("write padding to file"); |
1501 | } | |
1502 | ||
e986c7a1 DG |
1503 | free(zeros); |
1504 | ||
1d4dfdef DG |
1505 | end: |
1506 | return ret; | |
1507 | } | |
1508 | ||
d3ecc550 JD |
1509 | /* |
1510 | * Close the current index file if it is open, and create a new one. | |
1511 | * | |
1512 | * Return 0 on success, -1 on error. | |
1513 | */ | |
1514 | static | |
1515 | int create_rotate_index_file(struct relay_stream *stream) | |
1516 | { | |
1517 | int ret; | |
1518 | uint32_t major, minor; | |
1519 | ||
1520 | /* Put ref on previous index_file. */ | |
1521 | if (stream->index_file) { | |
1522 | lttng_index_file_put(stream->index_file); | |
1523 | stream->index_file = NULL; | |
1524 | } | |
1525 | major = stream->trace->session->major; | |
1526 | minor = stream->trace->session->minor; | |
1527 | stream->index_file = lttng_index_file_create(stream->path_name, | |
1528 | stream->channel_name, | |
1529 | -1, -1, stream->tracefile_size, | |
1530 | tracefile_array_get_file_index_head(stream->tfa), | |
1531 | lttng_to_index_major(major, minor), | |
1532 | lttng_to_index_minor(major, minor)); | |
1533 | if (!stream->index_file) { | |
1534 | ret = -1; | |
1535 | goto end; | |
1536 | } | |
1537 | ||
1538 | ret = 0; | |
1539 | ||
1540 | end: | |
1541 | return ret; | |
1542 | } | |
1543 | ||
1544 | static | |
1545 | int do_rotate_stream(struct relay_stream *stream) | |
1546 | { | |
1547 | int ret; | |
1548 | ||
1549 | /* Perform the stream rotation. */ | |
1550 | ret = utils_rotate_stream_file(stream->path_name, | |
1551 | stream->channel_name, stream->tracefile_size, | |
1552 | stream->tracefile_count, -1, | |
1553 | -1, stream->stream_fd->fd, | |
1554 | NULL, &stream->stream_fd->fd); | |
1555 | if (ret < 0) { | |
1556 | ERR("Rotating stream output file"); | |
1557 | goto end; | |
1558 | } | |
1559 | stream->tracefile_size_current = 0; | |
1560 | ||
1561 | /* Rotate also the index if the stream is not a metadata stream. */ | |
1562 | if (!stream->is_metadata) { | |
1563 | ret = create_rotate_index_file(stream); | |
1564 | if (ret < 0) { | |
1565 | ERR("Failed to rotate index file"); | |
1566 | goto end; | |
1567 | } | |
1568 | } | |
1569 | ||
1570 | stream->rotate_at_seq_num = -1ULL; | |
1571 | stream->pos_after_last_complete_data_index = 0; | |
1572 | ||
1573 | end: | |
1574 | return ret; | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * If too much data has been written in a tracefile before we received the | |
1579 | * rotation command, we have to move the excess data to the new tracefile and | |
1580 | * perform the rotation. This can happen because the control and data | |
1581 | * connections are separate, the indexes as well as the commands arrive from | |
1582 | * the control connection and we have no control over the order so we could be | |
1583 | * in a situation where too much data has been received on the data connection | |
1584 | * before the rotation command on the control connection arrives. We don't need | |
1585 | * to update the index because its order is guaranteed with the rotation | |
1586 | * command message. | |
1587 | */ | |
1588 | static | |
1589 | int rotate_truncate_stream(struct relay_stream *stream) | |
1590 | { | |
1591 | int ret, new_fd; | |
a5df8828 | 1592 | off_t lseek_ret; |
d3ecc550 JD |
1593 | uint64_t diff, pos = 0; |
1594 | char buf[FILE_COPY_BUFFER_SIZE]; | |
1595 | ||
1596 | assert(!stream->is_metadata); | |
1597 | ||
1598 | assert(stream->tracefile_size_current > | |
1599 | stream->pos_after_last_complete_data_index); | |
1600 | diff = stream->tracefile_size_current - | |
1601 | stream->pos_after_last_complete_data_index; | |
1602 | ||
1603 | /* Create the new tracefile. */ | |
1604 | new_fd = utils_create_stream_file(stream->path_name, | |
1605 | stream->channel_name, | |
1606 | stream->tracefile_size, stream->tracefile_count, | |
1607 | /* uid */ -1, /* gid */ -1, /* suffix */ NULL); | |
1608 | if (new_fd < 0) { | |
1609 | ERR("Failed to create new stream file at path %s for channel %s", | |
1610 | stream->path_name, stream->channel_name); | |
1611 | ret = -1; | |
1612 | goto end; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * Rewind the current tracefile to the position at which the rotation | |
1617 | * should have occured. | |
1618 | */ | |
a5df8828 | 1619 | lseek_ret = lseek(stream->stream_fd->fd, |
d3ecc550 | 1620 | stream->pos_after_last_complete_data_index, SEEK_SET); |
a5df8828 | 1621 | if (lseek_ret < 0) { |
d3ecc550 | 1622 | PERROR("seek truncate stream"); |
a5df8828 | 1623 | ret = -1; |
d3ecc550 JD |
1624 | goto end; |
1625 | } | |
1626 | ||
1627 | /* Move data from the old file to the new file. */ | |
1628 | while (pos < diff) { | |
1629 | uint64_t count, bytes_left; | |
1630 | ssize_t io_ret; | |
1631 | ||
1632 | bytes_left = diff - pos; | |
1633 | count = bytes_left > sizeof(buf) ? sizeof(buf) : bytes_left; | |
1634 | assert(count <= SIZE_MAX); | |
1635 | ||
1636 | io_ret = lttng_read(stream->stream_fd->fd, buf, count); | |
1637 | if (io_ret < (ssize_t) count) { | |
1638 | char error_string[256]; | |
1639 | ||
1640 | snprintf(error_string, sizeof(error_string), | |
1641 | "Failed to read %" PRIu64 " bytes from fd %i in rotate_truncate_stream(), returned %zi", | |
1642 | count, stream->stream_fd->fd, io_ret); | |
1643 | if (io_ret == -1) { | |
1644 | PERROR("%s", error_string); | |
1645 | } else { | |
1646 | ERR("%s", error_string); | |
1647 | } | |
1648 | ret = -1; | |
1649 | goto end; | |
1650 | } | |
1651 | ||
1652 | io_ret = lttng_write(new_fd, buf, count); | |
1653 | if (io_ret < (ssize_t) count) { | |
1654 | char error_string[256]; | |
1655 | ||
1656 | snprintf(error_string, sizeof(error_string), | |
1657 | "Failed to write %" PRIu64 " bytes from fd %i in rotate_truncate_stream(), returned %zi", | |
1658 | count, new_fd, io_ret); | |
1659 | if (io_ret == -1) { | |
1660 | PERROR("%s", error_string); | |
1661 | } else { | |
1662 | ERR("%s", error_string); | |
1663 | } | |
1664 | ret = -1; | |
1665 | goto end; | |
1666 | } | |
1667 | ||
1668 | pos += count; | |
1669 | } | |
1670 | ||
1671 | /* Truncate the file to get rid of the excess data. */ | |
1672 | ret = ftruncate(stream->stream_fd->fd, | |
1673 | stream->pos_after_last_complete_data_index); | |
1674 | if (ret) { | |
1675 | PERROR("ftruncate"); | |
1676 | goto end; | |
1677 | } | |
1678 | ||
1679 | ret = close(stream->stream_fd->fd); | |
1680 | if (ret < 0) { | |
1681 | PERROR("Closing tracefile"); | |
1682 | goto end; | |
1683 | } | |
1684 | ||
1685 | ret = create_rotate_index_file(stream); | |
1686 | if (ret < 0) { | |
1687 | ERR("Rotate stream index file"); | |
1688 | goto end; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Update the offset and FD of all the eventual indexes created by the | |
1693 | * data connection before the rotation command arrived. | |
1694 | */ | |
1695 | ret = relay_index_switch_all_files(stream); | |
1696 | if (ret < 0) { | |
1697 | ERR("Failed to rotate index file"); | |
1698 | goto end; | |
1699 | } | |
1700 | ||
1701 | stream->stream_fd->fd = new_fd; | |
1702 | stream->tracefile_size_current = diff; | |
1703 | stream->pos_after_last_complete_data_index = 0; | |
1704 | stream->rotate_at_seq_num = -1ULL; | |
1705 | ||
1706 | ret = 0; | |
1707 | ||
1708 | end: | |
1709 | return ret; | |
1710 | } | |
1711 | ||
1712 | /* | |
1713 | * Check if a stream should perform a rotation (for session rotation). | |
1714 | * Must be called with the stream lock held. | |
1715 | * | |
1716 | * Return 0 on success, a negative value on error. | |
1717 | */ | |
1718 | static | |
1719 | int try_rotate_stream(struct relay_stream *stream) | |
1720 | { | |
1721 | int ret = 0; | |
1722 | ||
1723 | /* No rotation expected. */ | |
1724 | if (stream->rotate_at_seq_num == -1ULL) { | |
1725 | goto end; | |
1726 | } | |
1727 | ||
3765c8cc JG |
1728 | if (stream->prev_seq < stream->rotate_at_seq_num || |
1729 | stream->prev_seq == -1ULL) { | |
d3ecc550 JD |
1730 | DBG("Stream %" PRIu64 " no yet ready for rotation", |
1731 | stream->stream_handle); | |
1732 | goto end; | |
1733 | } else if (stream->prev_seq > stream->rotate_at_seq_num) { | |
1734 | DBG("Rotation after too much data has been written in tracefile " | |
1735 | "for stream %" PRIu64 ", need to truncate before " | |
1736 | "rotating", stream->stream_handle); | |
1737 | ret = rotate_truncate_stream(stream); | |
1738 | if (ret) { | |
1739 | ERR("Failed to truncate stream"); | |
1740 | goto end; | |
1741 | } | |
1742 | } else { | |
1743 | /* stream->prev_seq == stream->rotate_at_seq_num */ | |
1744 | DBG("Stream %" PRIu64 " ready for rotation", | |
1745 | stream->stream_handle); | |
1746 | ret = do_rotate_stream(stream); | |
1747 | } | |
1748 | ||
1749 | end: | |
1750 | return ret; | |
1751 | } | |
1752 | ||
b8aa1682 | 1753 | /* |
7591bab1 | 1754 | * relay_recv_metadata: receive the metadata for the session. |
b8aa1682 | 1755 | */ |
7591bab1 | 1756 | static int relay_recv_metadata(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1757 | struct relay_connection *conn) |
b8aa1682 | 1758 | { |
32d1569c | 1759 | int ret = 0; |
6cd525e8 | 1760 | ssize_t size_ret; |
58eb9381 | 1761 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1762 | struct lttcomm_relayd_metadata_payload *metadata_struct; |
1763 | struct relay_stream *metadata_stream; | |
1764 | uint64_t data_size, payload_size; | |
1765 | ||
1766 | if (!session) { | |
1767 | ERR("Metadata sent before version check"); | |
1768 | ret = -1; | |
1769 | goto end; | |
1770 | } | |
1771 | ||
f6416125 MD |
1772 | data_size = payload_size = be64toh(recv_hdr->data_size); |
1773 | if (data_size < sizeof(struct lttcomm_relayd_metadata_payload)) { | |
1774 | ERR("Incorrect data size"); | |
1775 | ret = -1; | |
1776 | goto end; | |
1777 | } | |
1778 | payload_size -= sizeof(struct lttcomm_relayd_metadata_payload); | |
1779 | ||
b8aa1682 | 1780 | if (data_buffer_size < data_size) { |
d7b3776f | 1781 | /* In case the realloc fails, we can free the memory */ |
c617c0c6 MD |
1782 | char *tmp_data_ptr; |
1783 | ||
1784 | tmp_data_ptr = realloc(data_buffer, data_size); | |
1785 | if (!tmp_data_ptr) { | |
b8aa1682 | 1786 | ERR("Allocating data buffer"); |
c617c0c6 | 1787 | free(data_buffer); |
b8aa1682 JD |
1788 | ret = -1; |
1789 | goto end; | |
1790 | } | |
c617c0c6 | 1791 | data_buffer = tmp_data_ptr; |
b8aa1682 JD |
1792 | data_buffer_size = data_size; |
1793 | } | |
1794 | memset(data_buffer, 0, data_size); | |
77c7c900 | 1795 | DBG2("Relay receiving metadata, waiting for %" PRIu64 " bytes", data_size); |
32d1569c JG |
1796 | size_ret = conn->sock->ops->recvmsg(conn->sock, data_buffer, data_size, 0); |
1797 | if (size_ret < 0 || size_ret != data_size) { | |
1798 | if (size_ret == 0) { | |
a6cd2b97 | 1799 | /* Orderly shutdown. Not necessary to print an error. */ |
58eb9381 | 1800 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
1801 | } else { |
1802 | ERR("Relay didn't receive the whole metadata"); | |
1803 | } | |
b8aa1682 | 1804 | ret = -1; |
b8aa1682 JD |
1805 | goto end; |
1806 | } | |
1807 | metadata_struct = (struct lttcomm_relayd_metadata_payload *) data_buffer; | |
9d1bbf21 | 1808 | |
7591bab1 | 1809 | metadata_stream = stream_get_by_id(be64toh(metadata_struct->stream_id)); |
b8aa1682 JD |
1810 | if (!metadata_stream) { |
1811 | ret = -1; | |
7591bab1 | 1812 | goto end; |
b8aa1682 JD |
1813 | } |
1814 | ||
7591bab1 MD |
1815 | pthread_mutex_lock(&metadata_stream->lock); |
1816 | ||
1817 | size_ret = lttng_write(metadata_stream->stream_fd->fd, metadata_struct->payload, | |
6cd525e8 MD |
1818 | payload_size); |
1819 | if (size_ret < payload_size) { | |
b8aa1682 JD |
1820 | ERR("Relay error writing metadata on file"); |
1821 | ret = -1; | |
7591bab1 | 1822 | goto end_put; |
b8aa1682 | 1823 | } |
1d4dfdef | 1824 | |
32d1569c | 1825 | size_ret = write_padding_to_file(metadata_stream->stream_fd->fd, |
1d4dfdef | 1826 | be32toh(metadata_struct->padding_size)); |
32d1569c | 1827 | if (size_ret < 0) { |
7591bab1 | 1828 | goto end_put; |
1d4dfdef | 1829 | } |
2a174661 | 1830 | |
7591bab1 | 1831 | metadata_stream->metadata_received += |
d3e2ba59 | 1832 | payload_size + be32toh(metadata_struct->padding_size); |
7591bab1 MD |
1833 | DBG2("Relay metadata written. Updated metadata_received %" PRIu64, |
1834 | metadata_stream->metadata_received); | |
1d4dfdef | 1835 | |
d3ecc550 JD |
1836 | ret = try_rotate_stream(metadata_stream); |
1837 | if (ret < 0) { | |
1838 | goto end_put; | |
1839 | } | |
1840 | ||
7591bab1 MD |
1841 | end_put: |
1842 | pthread_mutex_unlock(&metadata_stream->lock); | |
1843 | stream_put(metadata_stream); | |
b8aa1682 JD |
1844 | end: |
1845 | return ret; | |
1846 | } | |
1847 | ||
1848 | /* | |
1849 | * relay_send_version: send relayd version number | |
1850 | */ | |
7591bab1 | 1851 | static int relay_send_version(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1852 | struct relay_connection *conn) |
b8aa1682 | 1853 | { |
7f51dcba | 1854 | int ret; |
092b6259 | 1855 | struct lttcomm_relayd_version reply, msg; |
87cb6359 | 1856 | bool compatible = true; |
b8aa1682 | 1857 | |
58eb9381 | 1858 | conn->version_check_done = 1; |
b8aa1682 | 1859 | |
092b6259 | 1860 | /* Get version from the other side. */ |
58eb9381 | 1861 | ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); |
092b6259 | 1862 | if (ret < 0 || ret != sizeof(msg)) { |
a6cd2b97 DG |
1863 | if (ret == 0) { |
1864 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 1865 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
1866 | } else { |
1867 | ERR("Relay failed to receive the version values."); | |
1868 | } | |
092b6259 | 1869 | ret = -1; |
092b6259 DG |
1870 | goto end; |
1871 | } | |
1872 | ||
53efb85a | 1873 | memset(&reply, 0, sizeof(reply)); |
d83a952c MD |
1874 | reply.major = RELAYD_VERSION_COMM_MAJOR; |
1875 | reply.minor = RELAYD_VERSION_COMM_MINOR; | |
d4519fa3 JD |
1876 | |
1877 | /* Major versions must be the same */ | |
1878 | if (reply.major != be32toh(msg.major)) { | |
6151a90f JD |
1879 | DBG("Incompatible major versions (%u vs %u), deleting session", |
1880 | reply.major, be32toh(msg.major)); | |
87cb6359 | 1881 | compatible = false; |
d4519fa3 JD |
1882 | } |
1883 | ||
58eb9381 | 1884 | conn->major = reply.major; |
0f907de1 JD |
1885 | /* We adapt to the lowest compatible version */ |
1886 | if (reply.minor <= be32toh(msg.minor)) { | |
58eb9381 | 1887 | conn->minor = reply.minor; |
0f907de1 | 1888 | } else { |
58eb9381 | 1889 | conn->minor = be32toh(msg.minor); |
0f907de1 JD |
1890 | } |
1891 | ||
6151a90f JD |
1892 | reply.major = htobe32(reply.major); |
1893 | reply.minor = htobe32(reply.minor); | |
58eb9381 | 1894 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
6151a90f JD |
1895 | sizeof(struct lttcomm_relayd_version), 0); |
1896 | if (ret < 0) { | |
1897 | ERR("Relay sending version"); | |
1898 | } | |
1899 | ||
87cb6359 JD |
1900 | if (!compatible) { |
1901 | ret = -1; | |
1902 | goto end; | |
1903 | } | |
1904 | ||
58eb9381 DG |
1905 | DBG("Version check done using protocol %u.%u", conn->major, |
1906 | conn->minor); | |
b8aa1682 JD |
1907 | |
1908 | end: | |
1909 | return ret; | |
1910 | } | |
1911 | ||
c8f59ee5 | 1912 | /* |
6d805429 | 1913 | * Check for data pending for a given stream id from the session daemon. |
c8f59ee5 | 1914 | */ |
7591bab1 | 1915 | static int relay_data_pending(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1916 | struct relay_connection *conn) |
c8f59ee5 | 1917 | { |
58eb9381 | 1918 | struct relay_session *session = conn->session; |
6d805429 | 1919 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
1920 | struct lttcomm_relayd_generic_reply reply; |
1921 | struct relay_stream *stream; | |
1922 | int ret; | |
c8f59ee5 DG |
1923 | uint64_t last_net_seq_num, stream_id; |
1924 | ||
6d805429 | 1925 | DBG("Data pending command received"); |
c8f59ee5 | 1926 | |
58eb9381 | 1927 | if (!session || conn->version_check_done == 0) { |
c8f59ee5 DG |
1928 | ERR("Trying to check for data before version check"); |
1929 | ret = -1; | |
1930 | goto end_no_session; | |
1931 | } | |
1932 | ||
58eb9381 | 1933 | ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); |
c8f59ee5 | 1934 | if (ret < sizeof(msg)) { |
a6cd2b97 DG |
1935 | if (ret == 0) { |
1936 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 1937 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
1938 | } else { |
1939 | ERR("Relay didn't receive valid data_pending struct size : %d", | |
1940 | ret); | |
1941 | } | |
c8f59ee5 DG |
1942 | ret = -1; |
1943 | goto end_no_session; | |
1944 | } | |
1945 | ||
1946 | stream_id = be64toh(msg.stream_id); | |
1947 | last_net_seq_num = be64toh(msg.last_net_seq_num); | |
1948 | ||
7591bab1 | 1949 | stream = stream_get_by_id(stream_id); |
de91f48a | 1950 | if (stream == NULL) { |
c8f59ee5 | 1951 | ret = -1; |
7591bab1 | 1952 | goto end; |
c8f59ee5 DG |
1953 | } |
1954 | ||
7591bab1 MD |
1955 | pthread_mutex_lock(&stream->lock); |
1956 | ||
6d805429 | 1957 | DBG("Data pending for stream id %" PRIu64 " prev_seq %" PRIu64 |
c8f59ee5 DG |
1958 | " and last_seq %" PRIu64, stream_id, stream->prev_seq, |
1959 | last_net_seq_num); | |
1960 | ||
33832e64 | 1961 | /* Avoid wrapping issue */ |
39df6d9f | 1962 | if (((int64_t) (stream->prev_seq - last_net_seq_num)) >= 0) { |
6d805429 | 1963 | /* Data has in fact been written and is NOT pending */ |
c8f59ee5 | 1964 | ret = 0; |
6d805429 DG |
1965 | } else { |
1966 | /* Data still being streamed thus pending */ | |
1967 | ret = 1; | |
c8f59ee5 DG |
1968 | } |
1969 | ||
7591bab1 MD |
1970 | stream->data_pending_check_done = true; |
1971 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 | 1972 | |
7591bab1 MD |
1973 | stream_put(stream); |
1974 | end: | |
c8f59ee5 | 1975 | |
53efb85a | 1976 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 1977 | reply.ret_code = htobe32(ret); |
58eb9381 | 1978 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
c8f59ee5 | 1979 | if (ret < 0) { |
6d805429 | 1980 | ERR("Relay data pending ret code failed"); |
c8f59ee5 DG |
1981 | } |
1982 | ||
1983 | end_no_session: | |
1984 | return ret; | |
1985 | } | |
1986 | ||
1987 | /* | |
1988 | * Wait for the control socket to reach a quiescent state. | |
1989 | * | |
7591bab1 MD |
1990 | * Note that for now, when receiving this command from the session |
1991 | * daemon, this means that every subsequent commands or data received on | |
1992 | * the control socket has been handled. So, this is why we simply return | |
1993 | * OK here. | |
c8f59ee5 | 1994 | */ |
7591bab1 | 1995 | static int relay_quiescent_control(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 1996 | struct relay_connection *conn) |
c8f59ee5 DG |
1997 | { |
1998 | int ret; | |
ad7051c0 DG |
1999 | uint64_t stream_id; |
2000 | struct relay_stream *stream; | |
ad7051c0 | 2001 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
2002 | struct lttcomm_relayd_generic_reply reply; |
2003 | ||
2004 | DBG("Checking quiescent state on control socket"); | |
2005 | ||
58eb9381 | 2006 | if (!conn->session || conn->version_check_done == 0) { |
ad7051c0 DG |
2007 | ERR("Trying to check for data before version check"); |
2008 | ret = -1; | |
2009 | goto end_no_session; | |
2010 | } | |
2011 | ||
58eb9381 | 2012 | ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); |
ad7051c0 | 2013 | if (ret < sizeof(msg)) { |
a6cd2b97 DG |
2014 | if (ret == 0) { |
2015 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 2016 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
2017 | } else { |
2018 | ERR("Relay didn't receive valid begin data_pending struct size: %d", | |
2019 | ret); | |
2020 | } | |
ad7051c0 DG |
2021 | ret = -1; |
2022 | goto end_no_session; | |
2023 | } | |
2024 | ||
2025 | stream_id = be64toh(msg.stream_id); | |
7591bab1 MD |
2026 | stream = stream_get_by_id(stream_id); |
2027 | if (!stream) { | |
2028 | goto reply; | |
2029 | } | |
2030 | pthread_mutex_lock(&stream->lock); | |
2031 | stream->data_pending_check_done = true; | |
2032 | pthread_mutex_unlock(&stream->lock); | |
2033 | DBG("Relay quiescent control pending flag set to %" PRIu64, stream_id); | |
2034 | stream_put(stream); | |
2035 | reply: | |
53efb85a | 2036 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 2037 | reply.ret_code = htobe32(LTTNG_OK); |
58eb9381 | 2038 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
c8f59ee5 | 2039 | if (ret < 0) { |
6d805429 | 2040 | ERR("Relay data quiescent control ret code failed"); |
c8f59ee5 DG |
2041 | } |
2042 | ||
ad7051c0 | 2043 | end_no_session: |
c8f59ee5 DG |
2044 | return ret; |
2045 | } | |
2046 | ||
f7079f67 | 2047 | /* |
7591bab1 MD |
2048 | * Initialize a data pending command. This means that a consumer is about |
2049 | * to ask for data pending for each stream it holds. Simply iterate over | |
2050 | * all streams of a session and set the data_pending_check_done flag. | |
f7079f67 DG |
2051 | * |
2052 | * This command returns to the client a LTTNG_OK code. | |
2053 | */ | |
7591bab1 | 2054 | static int relay_begin_data_pending(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 2055 | struct relay_connection *conn) |
f7079f67 DG |
2056 | { |
2057 | int ret; | |
2058 | struct lttng_ht_iter iter; | |
2059 | struct lttcomm_relayd_begin_data_pending msg; | |
2060 | struct lttcomm_relayd_generic_reply reply; | |
2061 | struct relay_stream *stream; | |
2062 | uint64_t session_id; | |
2063 | ||
2064 | assert(recv_hdr); | |
58eb9381 | 2065 | assert(conn); |
f7079f67 DG |
2066 | |
2067 | DBG("Init streams for data pending"); | |
2068 | ||
58eb9381 | 2069 | if (!conn->session || conn->version_check_done == 0) { |
f7079f67 DG |
2070 | ERR("Trying to check for data before version check"); |
2071 | ret = -1; | |
2072 | goto end_no_session; | |
2073 | } | |
2074 | ||
58eb9381 | 2075 | ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); |
f7079f67 | 2076 | if (ret < sizeof(msg)) { |
a6cd2b97 DG |
2077 | if (ret == 0) { |
2078 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 2079 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
2080 | } else { |
2081 | ERR("Relay didn't receive valid begin data_pending struct size: %d", | |
2082 | ret); | |
2083 | } | |
f7079f67 DG |
2084 | ret = -1; |
2085 | goto end_no_session; | |
2086 | } | |
2087 | ||
2088 | session_id = be64toh(msg.session_id); | |
2089 | ||
2090 | /* | |
7591bab1 MD |
2091 | * Iterate over all streams to set the begin data pending flag. |
2092 | * For now, the streams are indexed by stream handle so we have | |
2093 | * to iterate over all streams to find the one associated with | |
2094 | * the right session_id. | |
f7079f67 DG |
2095 | */ |
2096 | rcu_read_lock(); | |
d3e2ba59 | 2097 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2098 | node.node) { |
7591bab1 MD |
2099 | if (!stream_get(stream)) { |
2100 | continue; | |
2101 | } | |
2102 | if (stream->trace->session->id == session_id) { | |
2103 | pthread_mutex_lock(&stream->lock); | |
2104 | stream->data_pending_check_done = false; | |
2105 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 DG |
2106 | DBG("Set begin data pending flag to stream %" PRIu64, |
2107 | stream->stream_handle); | |
2108 | } | |
7591bab1 | 2109 | stream_put(stream); |
f7079f67 DG |
2110 | } |
2111 | rcu_read_unlock(); | |
2112 | ||
53efb85a | 2113 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2114 | /* All good, send back reply. */ |
2115 | reply.ret_code = htobe32(LTTNG_OK); | |
2116 | ||
58eb9381 | 2117 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
f7079f67 DG |
2118 | if (ret < 0) { |
2119 | ERR("Relay begin data pending send reply failed"); | |
2120 | } | |
2121 | ||
2122 | end_no_session: | |
2123 | return ret; | |
2124 | } | |
2125 | ||
2126 | /* | |
7591bab1 MD |
2127 | * End data pending command. This will check, for a given session id, if |
2128 | * each stream associated with it has its data_pending_check_done flag | |
2129 | * set. If not, this means that the client lost track of the stream but | |
2130 | * the data is still being streamed on our side. In this case, we inform | |
2131 | * the client that data is in flight. | |
f7079f67 DG |
2132 | * |
2133 | * Return to the client if there is data in flight or not with a ret_code. | |
2134 | */ | |
7591bab1 | 2135 | static int relay_end_data_pending(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 2136 | struct relay_connection *conn) |
f7079f67 DG |
2137 | { |
2138 | int ret; | |
2139 | struct lttng_ht_iter iter; | |
2140 | struct lttcomm_relayd_end_data_pending msg; | |
2141 | struct lttcomm_relayd_generic_reply reply; | |
2142 | struct relay_stream *stream; | |
2143 | uint64_t session_id; | |
2144 | uint32_t is_data_inflight = 0; | |
2145 | ||
f7079f67 DG |
2146 | DBG("End data pending command"); |
2147 | ||
58eb9381 | 2148 | if (!conn->session || conn->version_check_done == 0) { |
f7079f67 DG |
2149 | ERR("Trying to check for data before version check"); |
2150 | ret = -1; | |
2151 | goto end_no_session; | |
2152 | } | |
2153 | ||
58eb9381 | 2154 | ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); |
f7079f67 | 2155 | if (ret < sizeof(msg)) { |
a6cd2b97 DG |
2156 | if (ret == 0) { |
2157 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 2158 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 DG |
2159 | } else { |
2160 | ERR("Relay didn't receive valid end data_pending struct size: %d", | |
2161 | ret); | |
2162 | } | |
f7079f67 DG |
2163 | ret = -1; |
2164 | goto end_no_session; | |
2165 | } | |
2166 | ||
2167 | session_id = be64toh(msg.session_id); | |
2168 | ||
7591bab1 MD |
2169 | /* |
2170 | * Iterate over all streams to see if the begin data pending | |
2171 | * flag is set. | |
2172 | */ | |
f7079f67 | 2173 | rcu_read_lock(); |
d3e2ba59 | 2174 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2175 | node.node) { |
7591bab1 MD |
2176 | if (!stream_get(stream)) { |
2177 | continue; | |
2178 | } | |
2179 | if (stream->trace->session->id != session_id) { | |
2180 | stream_put(stream); | |
2181 | continue; | |
2182 | } | |
2183 | pthread_mutex_lock(&stream->lock); | |
2184 | if (!stream->data_pending_check_done) { | |
2185 | if (!stream->closed || !(((int64_t) (stream->prev_seq - stream->last_net_seq_num)) >= 0)) { | |
2186 | is_data_inflight = 1; | |
2187 | DBG("Data is still in flight for stream %" PRIu64, | |
2188 | stream->stream_handle); | |
2189 | pthread_mutex_unlock(&stream->lock); | |
2190 | stream_put(stream); | |
2191 | break; | |
2192 | } | |
f7079f67 | 2193 | } |
7591bab1 MD |
2194 | pthread_mutex_unlock(&stream->lock); |
2195 | stream_put(stream); | |
f7079f67 DG |
2196 | } |
2197 | rcu_read_unlock(); | |
2198 | ||
53efb85a | 2199 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2200 | /* All good, send back reply. */ |
2201 | reply.ret_code = htobe32(is_data_inflight); | |
2202 | ||
58eb9381 | 2203 | ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
f7079f67 DG |
2204 | if (ret < 0) { |
2205 | ERR("Relay end data pending send reply failed"); | |
2206 | } | |
2207 | ||
2208 | end_no_session: | |
2209 | return ret; | |
2210 | } | |
2211 | ||
1c20f0e2 JD |
2212 | /* |
2213 | * Receive an index for a specific stream. | |
2214 | * | |
2215 | * Return 0 on success else a negative value. | |
2216 | */ | |
7591bab1 | 2217 | static int relay_recv_index(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 2218 | struct relay_connection *conn) |
1c20f0e2 | 2219 | { |
7591bab1 | 2220 | int ret, send_ret; |
58eb9381 | 2221 | struct relay_session *session = conn->session; |
1c20f0e2 | 2222 | struct lttcomm_relayd_index index_info; |
7591bab1 | 2223 | struct relay_index *index; |
1c20f0e2 JD |
2224 | struct lttcomm_relayd_generic_reply reply; |
2225 | struct relay_stream *stream; | |
2226 | uint64_t net_seq_num; | |
f8f3885c | 2227 | size_t msg_len; |
1c20f0e2 | 2228 | |
58eb9381 | 2229 | assert(conn); |
1c20f0e2 JD |
2230 | |
2231 | DBG("Relay receiving index"); | |
2232 | ||
58eb9381 | 2233 | if (!session || conn->version_check_done == 0) { |
1c20f0e2 JD |
2234 | ERR("Trying to close a stream before version check"); |
2235 | ret = -1; | |
2236 | goto end_no_session; | |
2237 | } | |
2238 | ||
f8f3885c MD |
2239 | msg_len = lttcomm_relayd_index_len( |
2240 | lttng_to_index_major(conn->major, conn->minor), | |
2241 | lttng_to_index_minor(conn->major, conn->minor)); | |
58eb9381 | 2242 | ret = conn->sock->ops->recvmsg(conn->sock, &index_info, |
f8f3885c MD |
2243 | msg_len, 0); |
2244 | if (ret < msg_len) { | |
1c20f0e2 JD |
2245 | if (ret == 0) { |
2246 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 2247 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
1c20f0e2 JD |
2248 | } else { |
2249 | ERR("Relay didn't receive valid index struct size : %d", ret); | |
2250 | } | |
2251 | ret = -1; | |
2252 | goto end_no_session; | |
2253 | } | |
2254 | ||
2255 | net_seq_num = be64toh(index_info.net_seq_num); | |
2256 | ||
7591bab1 | 2257 | stream = stream_get_by_id(be64toh(index_info.relay_stream_id)); |
1c20f0e2 | 2258 | if (!stream) { |
7591bab1 | 2259 | ERR("stream_get_by_id not found"); |
1c20f0e2 | 2260 | ret = -1; |
7591bab1 | 2261 | goto end; |
1c20f0e2 | 2262 | } |
7591bab1 | 2263 | pthread_mutex_lock(&stream->lock); |
1c20f0e2 | 2264 | |
d3e2ba59 JD |
2265 | /* Live beacon handling */ |
2266 | if (index_info.packet_size == 0) { | |
7591bab1 MD |
2267 | DBG("Received live beacon for stream %" PRIu64, |
2268 | stream->stream_handle); | |
d3e2ba59 JD |
2269 | |
2270 | /* | |
7591bab1 MD |
2271 | * Only flag a stream inactive when it has already |
2272 | * received data and no indexes are in flight. | |
d3e2ba59 | 2273 | */ |
a44ca2ca | 2274 | if (stream->index_received_seqcount > 0 |
7591bab1 MD |
2275 | && stream->indexes_in_flight == 0) { |
2276 | stream->beacon_ts_end = | |
2277 | be64toh(index_info.timestamp_end); | |
d3e2ba59 JD |
2278 | } |
2279 | ret = 0; | |
7591bab1 | 2280 | goto end_stream_put; |
d3e2ba59 JD |
2281 | } else { |
2282 | stream->beacon_ts_end = -1ULL; | |
2283 | } | |
2284 | ||
528f2ffa JD |
2285 | if (stream->ctf_stream_id == -1ULL) { |
2286 | stream->ctf_stream_id = be64toh(index_info.stream_id); | |
2287 | } | |
7591bab1 MD |
2288 | index = relay_index_get_by_id_or_create(stream, net_seq_num); |
2289 | if (!index) { | |
2290 | ret = -1; | |
2291 | ERR("relay_index_get_by_id_or_create index NULL"); | |
2292 | goto end_stream_put; | |
1c20f0e2 | 2293 | } |
234cd636 | 2294 | if (set_index_control_data(index, &index_info, conn)) { |
7591bab1 MD |
2295 | ERR("set_index_control_data error"); |
2296 | relay_index_put(index); | |
2297 | ret = -1; | |
2298 | goto end_stream_put; | |
2299 | } | |
2300 | ret = relay_index_try_flush(index); | |
2301 | if (ret == 0) { | |
a44ca2ca MD |
2302 | tracefile_array_commit_seq(stream->tfa); |
2303 | stream->index_received_seqcount++; | |
d3ecc550 | 2304 | stream->pos_after_last_complete_data_index += index->total_size; |
7591bab1 MD |
2305 | } else if (ret > 0) { |
2306 | /* no flush. */ | |
2307 | ret = 0; | |
2308 | } else { | |
2309 | ERR("relay_index_try_flush error %d", ret); | |
2310 | relay_index_put(index); | |
2311 | ret = -1; | |
1c20f0e2 JD |
2312 | } |
2313 | ||
7591bab1 MD |
2314 | end_stream_put: |
2315 | pthread_mutex_unlock(&stream->lock); | |
2316 | stream_put(stream); | |
2317 | ||
2318 | end: | |
1c20f0e2 | 2319 | |
53efb85a | 2320 | memset(&reply, 0, sizeof(reply)); |
1c20f0e2 JD |
2321 | if (ret < 0) { |
2322 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2323 | } else { | |
2324 | reply.ret_code = htobe32(LTTNG_OK); | |
2325 | } | |
58eb9381 | 2326 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1c20f0e2 JD |
2327 | if (send_ret < 0) { |
2328 | ERR("Relay sending close index id reply"); | |
2329 | ret = send_ret; | |
2330 | } | |
2331 | ||
2332 | end_no_session: | |
2333 | return ret; | |
2334 | } | |
2335 | ||
a4baae1b JD |
2336 | /* |
2337 | * Receive the streams_sent message. | |
2338 | * | |
2339 | * Return 0 on success else a negative value. | |
2340 | */ | |
7591bab1 | 2341 | static int relay_streams_sent(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 2342 | struct relay_connection *conn) |
a4baae1b JD |
2343 | { |
2344 | int ret, send_ret; | |
2345 | struct lttcomm_relayd_generic_reply reply; | |
2346 | ||
58eb9381 | 2347 | assert(conn); |
a4baae1b JD |
2348 | |
2349 | DBG("Relay receiving streams_sent"); | |
2350 | ||
58eb9381 | 2351 | if (!conn->session || conn->version_check_done == 0) { |
a4baae1b JD |
2352 | ERR("Trying to close a stream before version check"); |
2353 | ret = -1; | |
2354 | goto end_no_session; | |
2355 | } | |
2356 | ||
2357 | /* | |
7591bab1 MD |
2358 | * Publish every pending stream in the connection recv list which are |
2359 | * now ready to be used by the viewer. | |
4a9daf17 | 2360 | */ |
7591bab1 | 2361 | publish_connection_local_streams(conn); |
4a9daf17 | 2362 | |
53efb85a | 2363 | memset(&reply, 0, sizeof(reply)); |
a4baae1b | 2364 | reply.ret_code = htobe32(LTTNG_OK); |
58eb9381 | 2365 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
a4baae1b JD |
2366 | if (send_ret < 0) { |
2367 | ERR("Relay sending sent_stream reply"); | |
2368 | ret = send_ret; | |
2369 | } else { | |
2370 | /* Success. */ | |
2371 | ret = 0; | |
2372 | } | |
2373 | ||
2374 | end_no_session: | |
2375 | return ret; | |
2376 | } | |
2377 | ||
d3ecc550 JD |
2378 | /* |
2379 | * relay_rotate_stream: rotate a stream to a new tracefile for the session | |
2380 | * rotation feature (not the tracefile rotation feature). | |
2381 | */ | |
2382 | static int relay_rotate_session_stream(struct lttcomm_relayd_hdr *recv_hdr, | |
2383 | struct relay_connection *conn) | |
2384 | { | |
2385 | int ret, send_ret; | |
2386 | struct relay_session *session = conn->session; | |
2387 | struct lttcomm_relayd_rotate_stream stream_info; | |
2388 | struct lttcomm_relayd_generic_reply reply; | |
2389 | struct relay_stream *stream; | |
2390 | size_t len; | |
2391 | char *new_pathname = NULL; | |
2392 | ||
2393 | DBG("Rotate stream received"); | |
2394 | ||
2395 | if (!session || !conn->version_check_done) { | |
2396 | ERR("Trying to rotate a stream before version check"); | |
2397 | ret = -1; | |
2398 | goto end_no_reply; | |
2399 | } | |
2400 | ||
2401 | if (session->major == 2 && session->minor < 11) { | |
2402 | ERR("Unsupported feature before 2.11"); | |
2403 | ret = -1; | |
2404 | goto end_no_reply; | |
2405 | } | |
2406 | ||
2407 | memset(&stream_info, 0, sizeof(struct lttcomm_relayd_rotate_stream)); | |
2408 | ||
2409 | /* | |
2410 | * Receive the struct up to the new_pathname member since we don't know | |
2411 | * its size yet. | |
2412 | */ | |
2413 | ret = conn->sock->ops->recvmsg(conn->sock, &stream_info, | |
2414 | sizeof(struct lttcomm_relayd_rotate_stream), 0); | |
2415 | if (ret < sizeof(struct lttcomm_relayd_rotate_stream)) { | |
2416 | if (ret == 0) { | |
2417 | /* Orderly shutdown. Not necessary to print an error. */ | |
2418 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
2419 | } else { | |
2420 | ERR("Relay didn't receive valid rotate_stream struct size : %d", ret); | |
2421 | } | |
2422 | ret = -1; | |
2423 | goto end_no_reply; | |
2424 | } | |
2425 | ||
2426 | stream = stream_get_by_id(be64toh(stream_info.stream_id)); | |
2427 | if (!stream) { | |
2428 | ret = -1; | |
2429 | goto end; | |
2430 | } | |
2431 | ||
2432 | len = be32toh(stream_info.pathname_length); | |
2433 | /* Ensure it fits in local filename length. */ | |
2434 | if (len >= LTTNG_PATH_MAX) { | |
2435 | ret = -ENAMETOOLONG; | |
2436 | ERR("Length of relay_rotate_session_stream command's path name (%zu bytes) exceeds the maximal allowed length of %i bytes", | |
2437 | len, LTTNG_PATH_MAX); | |
2438 | goto end; | |
2439 | } | |
2440 | ||
2441 | new_pathname = zmalloc(len); | |
2442 | if (!new_pathname) { | |
2443 | PERROR("Failed to allocation new path name of relay_rotate_session_stream command"); | |
2444 | ret = -1; | |
2445 | goto end; | |
2446 | } | |
2447 | ||
2448 | ret = conn->sock->ops->recvmsg(conn->sock, new_pathname, len, 0); | |
2449 | if (ret < len) { | |
2450 | if (ret == 0) { | |
2451 | /* Orderly shutdown. Not necessary to print an error. */ | |
2452 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
2453 | } else { | |
2454 | ERR("Relay didn't receive valid rotate_stream struct size : %d", ret); | |
2455 | } | |
2456 | ret = -1; | |
2457 | goto end_no_reply; | |
2458 | } | |
2459 | ||
2460 | pthread_mutex_lock(&stream->lock); | |
2461 | ||
2462 | /* | |
2463 | * Update the trace path (just the folder, the stream name does not | |
2464 | * change). | |
2465 | */ | |
2466 | free(stream->path_name); | |
2467 | stream->path_name = create_output_path(new_pathname); | |
2468 | if (!stream->path_name) { | |
2469 | ERR("Failed to create a new output path"); | |
2470 | goto end_stream_unlock; | |
2471 | } | |
2472 | ret = utils_mkdir_recursive(stream->path_name, S_IRWXU | S_IRWXG, | |
2473 | -1, -1); | |
2474 | if (ret < 0) { | |
2475 | ERR("relay creating output directory"); | |
2476 | goto end_stream_unlock; | |
2477 | } | |
2478 | stream->chunk_id = be64toh(stream_info.new_chunk_id); | |
2479 | ||
2480 | if (stream->is_metadata) { | |
2481 | /* | |
2482 | * The metadata stream is sent only over the control connection | |
2483 | * so we know we have all the data to perform the stream | |
2484 | * rotation. | |
2485 | */ | |
2486 | ret = do_rotate_stream(stream); | |
2487 | } else { | |
2488 | stream->rotate_at_seq_num = be64toh(stream_info.rotate_at_seq_num); | |
2489 | ret = try_rotate_stream(stream); | |
2490 | } | |
2491 | if (ret < 0) { | |
2492 | goto end_stream_unlock; | |
2493 | } | |
2494 | ||
2495 | end_stream_unlock: | |
2496 | pthread_mutex_unlock(&stream->lock); | |
2497 | stream_put(stream); | |
2498 | end: | |
2499 | memset(&reply, 0, sizeof(reply)); | |
2500 | if (ret < 0) { | |
2501 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2502 | } else { | |
2503 | reply.ret_code = htobe32(LTTNG_OK); | |
2504 | } | |
2505 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
2506 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
2507 | if (send_ret < 0) { | |
2508 | ERR("Failed to send reply of rotate session stream command"); | |
2509 | ret = send_ret; | |
2510 | } | |
2511 | ||
2512 | end_no_reply: | |
2513 | free(new_pathname); | |
2514 | return ret; | |
2515 | } | |
2516 | ||
a1ae2ea5 JD |
2517 | /* |
2518 | * relay_mkdir: Create a folder on the disk. | |
2519 | */ | |
2520 | static int relay_mkdir(struct lttcomm_relayd_hdr *recv_hdr, | |
2521 | struct relay_connection *conn) | |
2522 | { | |
2523 | int ret; | |
2524 | ssize_t network_ret; | |
2525 | struct relay_session *session = conn->session; | |
2526 | struct lttcomm_relayd_mkdir path_info_header; | |
2527 | struct lttcomm_relayd_mkdir *path_info = NULL; | |
2528 | struct lttcomm_relayd_generic_reply reply; | |
2529 | char *path = NULL; | |
2530 | ||
2531 | if (!session || !conn->version_check_done) { | |
00fb02ac | 2532 | ERR("Trying to create a directory before version check"); |
a1ae2ea5 JD |
2533 | ret = -1; |
2534 | goto end_no_session; | |
2535 | } | |
2536 | ||
2537 | if (session->major == 2 && session->minor < 11) { | |
2538 | /* | |
2539 | * This client is not supposed to use this command since | |
2540 | * it predates its introduction. | |
2541 | */ | |
2542 | ERR("relay_mkdir command is unsupported before LTTng 2.11"); | |
2543 | ret = -1; | |
2544 | goto end_no_session; | |
2545 | } | |
2546 | ||
2547 | network_ret = conn->sock->ops->recvmsg(conn->sock, &path_info_header, | |
2548 | sizeof(path_info_header), 0); | |
2549 | if (network_ret < (ssize_t) sizeof(path_info_header)) { | |
2550 | if (network_ret == 0) { | |
2551 | /* Orderly shutdown. Not necessary to print an error. */ | |
2552 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
2553 | } else { | |
2554 | ERR("Reception of mkdir command argument length failed with ret = %zi, expected %zu", | |
2555 | network_ret, sizeof(path_info_header)); | |
2556 | } | |
2557 | ret = -1; | |
2558 | goto end_no_session; | |
2559 | } | |
2560 | ||
2561 | path_info_header.length = be32toh(path_info_header.length); | |
2562 | ||
2563 | /* Ensure that it fits in local path length. */ | |
2564 | if (path_info_header.length >= LTTNG_PATH_MAX) { | |
2565 | ret = -ENAMETOOLONG; | |
2566 | ERR("Path name argument of mkdir command (%" PRIu32 " bytes) exceeds the maximal length allowed (%d bytes)", | |
2567 | path_info_header.length, LTTNG_PATH_MAX); | |
2568 | goto end; | |
2569 | } | |
2570 | ||
2571 | path_info = zmalloc(sizeof(path_info_header) + path_info_header.length); | |
2572 | if (!path_info) { | |
2573 | PERROR("zmalloc of mkdir command path"); | |
2574 | ret = -1; | |
2575 | goto end; | |
2576 | } | |
2577 | ||
2578 | network_ret = conn->sock->ops->recvmsg(conn->sock, path_info->path, | |
2579 | path_info_header.length, 0); | |
2580 | if (network_ret < (ssize_t) path_info_header.length) { | |
2581 | if (network_ret == 0) { | |
2582 | /* Orderly shutdown. Not necessary to print an error. */ | |
2583 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
2584 | } else { | |
2585 | ERR("Reception of mkdir path argument failed with ret = %zi, expected %" PRIu32, | |
2586 | network_ret, path_info_header.length); | |
2587 | } | |
2588 | ret = -1; | |
2589 | goto end_no_session; | |
2590 | } | |
2591 | ||
2592 | path = create_output_path(path_info->path); | |
2593 | if (!path) { | |
2594 | ERR("Failed to create output path"); | |
2595 | ret = -1; | |
2596 | goto end; | |
2597 | } | |
2598 | ||
2599 | ret = utils_mkdir_recursive(path, S_IRWXU | S_IRWXG, -1, -1); | |
2600 | if (ret < 0) { | |
2601 | ERR("relay creating output directory"); | |
2602 | goto end; | |
2603 | } | |
2604 | ||
2605 | ret = 0; | |
2606 | ||
2607 | end: | |
2608 | memset(&reply, 0, sizeof(reply)); | |
2609 | if (ret < 0) { | |
2610 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2611 | } else { | |
2612 | reply.ret_code = htobe32(LTTNG_OK); | |
2613 | } | |
2614 | network_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
2615 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
2616 | if (network_ret < (ssize_t) sizeof(struct lttcomm_relayd_generic_reply)) { | |
2617 | ERR("Failed to send mkdir command status code with ret = %zi, expected %zu", | |
2618 | network_ret, | |
2619 | sizeof(struct lttcomm_relayd_generic_reply)); | |
2620 | ret = -1; | |
2621 | } | |
2622 | ||
2623 | end_no_session: | |
2624 | free(path); | |
2625 | free(path_info); | |
2626 | return ret; | |
2627 | } | |
2628 | ||
00fb02ac JD |
2629 | static int validate_rotate_rename_path_length(const char *path_type, |
2630 | uint32_t path_length) | |
2631 | { | |
2632 | int ret = 0; | |
2633 | ||
2634 | if (path_length > LTTNG_PATH_MAX) { | |
2635 | ret = -ENAMETOOLONG; | |
2636 | ERR("rotate rename \"%s\" path name length (%" PRIu32 " bytes) exceeds the allowed size of %i bytes", | |
2637 | path_type, path_length, LTTNG_PATH_MAX); | |
2638 | } else if (path_length == 0) { | |
2639 | ret = -EINVAL; | |
2640 | ERR("rotate rename \"%s\" path name has an illegal length of 0", path_type); | |
2641 | } | |
2642 | return ret; | |
2643 | } | |
2644 | ||
2645 | /* | |
2646 | * relay_rotate_rename: rename the trace folder after a rotation is | |
2647 | * completed. We are not closing any fd here, just moving the folder, so it | |
2648 | * works even if data is still in-flight. | |
2649 | */ | |
2650 | static int relay_rotate_rename(struct lttcomm_relayd_hdr *recv_hdr, | |
2651 | struct relay_connection *conn) | |
2652 | { | |
2653 | int ret; | |
2654 | ssize_t network_ret; | |
2655 | struct relay_session *session = conn->session; | |
2656 | struct lttcomm_relayd_generic_reply reply; | |
2657 | struct lttcomm_relayd_rotate_rename header; | |
2658 | char *received_paths = NULL; | |
2659 | size_t received_paths_size; | |
2660 | const char *received_old_path, *received_new_path; | |
2661 | char *complete_old_path = NULL, *complete_new_path = NULL; | |
2662 | ||
2663 | if (!session || !conn->version_check_done) { | |
2664 | ERR("Trying to rename a trace folder before version check"); | |
2665 | ret = -1; | |
2666 | goto end_no_reply; | |
2667 | } | |
2668 | ||
2669 | if (session->major == 2 && session->minor < 11) { | |
2670 | ERR("relay_rotate_rename command is unsupported before LTTng 2.11"); | |
2671 | ret = -1; | |
2672 | goto end_no_reply; | |
2673 | } | |
2674 | ||
2675 | network_ret = conn->sock->ops->recvmsg(conn->sock, &header, | |
2676 | sizeof(header), 0); | |
2677 | if (network_ret < (ssize_t) sizeof(header)) { | |
2678 | if (network_ret == 0) { | |
2679 | /* Orderly shutdown. Not necessary to print an error. */ | |
2680 | DBG("Socket %d did an orderly shutdown", | |
2681 | conn->sock->fd); | |
2682 | } else { | |
2683 | ERR("Relay didn't receive a valid rotate_rename command header: expected %zu bytes, recvmsg() returned %zi", | |
2684 | sizeof(header), network_ret); | |
2685 | } | |
2686 | ret = -1; | |
2687 | goto end_no_reply; | |
2688 | } | |
2689 | ||
2690 | header.old_path_length = be32toh(header.old_path_length); | |
2691 | header.new_path_length = be32toh(header.new_path_length); | |
2692 | received_paths_size = header.old_path_length + header.new_path_length; | |
2693 | ||
2694 | /* Ensure the paths don't exceed their allowed size. */ | |
2695 | ret = validate_rotate_rename_path_length("old", header.old_path_length); | |
2696 | if (ret) { | |
2697 | goto end; | |
2698 | } | |
2699 | ret = validate_rotate_rename_path_length("new", header.new_path_length); | |
2700 | if (ret) { | |
2701 | goto end; | |
2702 | } | |
2703 | ||
2704 | received_paths = zmalloc(received_paths_size); | |
2705 | if (!received_paths) { | |
2706 | PERROR("Could not allocate rotate commands paths reception buffer"); | |
2707 | ret = -1; | |
2708 | goto end; | |
2709 | } | |
2710 | ||
2711 | network_ret = conn->sock->ops->recvmsg(conn->sock, received_paths, | |
2712 | received_paths_size, 0); | |
2713 | if (network_ret < (ssize_t) received_paths_size) { | |
2714 | if (network_ret == 0) { | |
2715 | /* Orderly shutdown. Not necessary to print an error. */ | |
2716 | DBG("Socket %d did an orderly shutdown", | |
2717 | conn->sock->fd); | |
2718 | } else { | |
2719 | ERR("Relay failed to received rename command paths (%zu bytes): recvmsg() returned %zi", | |
2720 | received_paths_size, network_ret); | |
2721 | } | |
2722 | ret = -1; | |
2723 | goto end_no_reply; | |
2724 | } | |
2725 | ||
2726 | /* Validate that both paths received are NULL terminated. */ | |
2727 | if (received_paths[header.old_path_length - 1] != '\0') { | |
2728 | ERR("relay_rotate_rename command's \"old\" path is invalid (not NULL terminated)"); | |
2729 | ret = -1; | |
2730 | goto end; | |
2731 | } | |
2732 | if (received_paths[received_paths_size - 1] != '\0') { | |
2733 | ERR("relay_rotate_rename command's \"new\" path is invalid (not NULL terminated)"); | |
2734 | ret = -1; | |
2735 | goto end; | |
2736 | } | |
2737 | ||
2738 | received_old_path = received_paths; | |
2739 | received_new_path = received_paths + header.old_path_length; | |
2740 | ||
2741 | complete_old_path = create_output_path(received_old_path); | |
2742 | if (!complete_old_path) { | |
2743 | ERR("Failed to build old output path in rotate_rename command"); | |
2744 | ret = -1; | |
2745 | goto end; | |
2746 | } | |
2747 | ||
2748 | complete_new_path = create_output_path(received_new_path); | |
2749 | if (!complete_new_path) { | |
2750 | ERR("Failed to build new output path in rotate_rename command"); | |
2751 | ret = -1; | |
2752 | goto end; | |
2753 | } | |
2754 | ||
2755 | ret = utils_mkdir_recursive(complete_new_path, S_IRWXU | S_IRWXG, | |
2756 | -1, -1); | |
2757 | if (ret < 0) { | |
2758 | ERR("Failed to mkdir() rotate_rename's \"new\" output directory at \"%s\"", | |
2759 | complete_new_path); | |
2760 | goto end; | |
2761 | } | |
2762 | ||
2763 | /* | |
2764 | * If a domain has not yet created its channel, the domain-specific | |
2765 | * folder might not exist, but this is not an error. | |
2766 | */ | |
2767 | ret = rename(complete_old_path, complete_new_path); | |
2768 | if (ret < 0 && errno != ENOENT) { | |
2769 | PERROR("Renaming chunk in rotate_rename command from \"%s\" to \"%s\"", | |
2770 | complete_old_path, complete_new_path); | |
2771 | goto end; | |
2772 | } | |
2773 | ret = 0; | |
2774 | ||
2775 | end: | |
2776 | memset(&reply, 0, sizeof(reply)); | |
2777 | if (ret < 0) { | |
2778 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2779 | } else { | |
2780 | reply.ret_code = htobe32(LTTNG_OK); | |
2781 | } | |
2782 | network_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
2783 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
2784 | if (network_ret < sizeof(struct lttcomm_relayd_generic_reply)) { | |
2785 | ERR("Relay sending stream id"); | |
2786 | ret = -1; | |
2787 | } | |
2788 | ||
2789 | end_no_reply: | |
2790 | free(received_paths); | |
2791 | free(complete_old_path); | |
2792 | free(complete_new_path); | |
2793 | return ret; | |
2794 | } | |
2795 | ||
e2acc8d2 JD |
2796 | /* |
2797 | * Check if all the streams in the session have completed the last rotation. | |
2798 | * The chunk_id value is used to distinguish the cases where a stream was | |
2799 | * closed on the consumerd before the rotation started but it still active on | |
2800 | * the relayd, and the case where a stream appeared on the consumerd/relayd | |
2801 | * after the last rotation started (in that case, it is already writing in the | |
2802 | * new chunk folder). | |
2803 | */ | |
2804 | static | |
2805 | int relay_rotate_pending(struct lttcomm_relayd_hdr *recv_hdr, | |
2806 | struct relay_connection *conn) | |
2807 | { | |
2808 | struct relay_session *session = conn->session; | |
2809 | struct lttcomm_relayd_rotate_pending msg; | |
d88744a4 | 2810 | struct lttcomm_relayd_rotate_pending_reply reply; |
e2acc8d2 JD |
2811 | struct lttng_ht_iter iter; |
2812 | struct relay_stream *stream; | |
4f5fb4c3 | 2813 | int ret = 0; |
e2acc8d2 JD |
2814 | ssize_t network_ret; |
2815 | uint64_t chunk_id; | |
2816 | bool rotate_pending = false; | |
2817 | ||
2818 | DBG("Rotate pending command received"); | |
2819 | ||
2820 | if (!session || !conn->version_check_done) { | |
2821 | ERR("Trying to check for data before version check"); | |
2822 | ret = -1; | |
2823 | goto end_no_reply; | |
2824 | } | |
2825 | ||
2826 | if (session->major == 2 && session->minor < 11) { | |
2827 | ERR("Unsupported feature before 2.11"); | |
2828 | ret = -1; | |
2829 | goto end_no_reply; | |
2830 | } | |
2831 | ||
2832 | network_ret = conn->sock->ops->recvmsg(conn->sock, &msg, sizeof(msg), 0); | |
2833 | if (network_ret < (ssize_t) sizeof(msg)) { | |
2834 | if (network_ret == 0) { | |
2835 | /* Orderly shutdown. Not necessary to print an error. */ | |
2836 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
2837 | } else { | |
2838 | ERR("Relay didn't receive valid rotate_pending struct size : %zi", | |
2839 | network_ret); | |
2840 | } | |
2841 | ret = -1; | |
2842 | goto end_no_reply; | |
2843 | } | |
2844 | ||
2845 | chunk_id = be64toh(msg.chunk_id); | |
2846 | DBG("Evaluating rotate pending for chunk id %" PRIu64, chunk_id); | |
2847 | ||
2848 | /* | |
2849 | * Iterate over all the streams in the session and check if they are | |
2850 | * still waiting for data to perform their rotation. | |
2851 | */ | |
2852 | rcu_read_lock(); | |
2853 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, | |
2854 | node.node) { | |
2855 | if (!stream_get(stream)) { | |
2856 | continue; | |
2857 | } | |
2858 | if (stream->trace->session != session) { | |
2859 | stream_put(stream); | |
2860 | continue; | |
2861 | } | |
2862 | pthread_mutex_lock(&stream->lock); | |
2863 | if (stream->rotate_at_seq_num != -1ULL) { | |
2864 | /* We have not yet performed the rotation. */ | |
2865 | rotate_pending = true; | |
2866 | DBG("Stream %" PRIu64 " is still rotating", | |
2867 | stream->stream_handle); | |
2868 | } else if (stream->chunk_id < chunk_id) { | |
2869 | /* | |
2870 | * Stream closed on the consumer but still active on the | |
2871 | * relay. | |
2872 | */ | |
2873 | rotate_pending = true; | |
2874 | DBG("Stream %" PRIu64 " did not exist on the consumer " | |
2875 | "when the last rotation started, but is" | |
2876 | "still waiting for data before getting" | |
2877 | "closed", | |
2878 | stream->stream_handle); | |
2879 | } | |
2880 | pthread_mutex_unlock(&stream->lock); | |
2881 | stream_put(stream); | |
2882 | if (rotate_pending) { | |
2883 | goto send_reply; | |
2884 | } | |
2885 | } | |
2886 | ||
2887 | send_reply: | |
2888 | rcu_read_unlock(); | |
2889 | memset(&reply, 0, sizeof(reply)); | |
d88744a4 JD |
2890 | reply.generic.ret_code = htobe32((uint32_t) LTTNG_OK); |
2891 | reply.is_pending = (uint8_t) !!rotate_pending; | |
e2acc8d2 JD |
2892 | network_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
2893 | sizeof(reply), 0); | |
2894 | if (network_ret < (ssize_t) sizeof(reply)) { | |
2895 | ERR("Relay rotate pending ret code failed"); | |
2896 | ret = -1; | |
2897 | } | |
2898 | ||
2899 | end_no_reply: | |
2900 | return ret; | |
2901 | } | |
2902 | ||
b8aa1682 | 2903 | /* |
d3e2ba59 | 2904 | * Process the commands received on the control socket |
b8aa1682 | 2905 | */ |
7591bab1 | 2906 | static int relay_process_control(struct lttcomm_relayd_hdr *recv_hdr, |
58eb9381 | 2907 | struct relay_connection *conn) |
b8aa1682 JD |
2908 | { |
2909 | int ret = 0; | |
2910 | ||
2911 | switch (be32toh(recv_hdr->cmd)) { | |
b8aa1682 | 2912 | case RELAYD_CREATE_SESSION: |
58eb9381 | 2913 | ret = relay_create_session(recv_hdr, conn); |
b8aa1682 | 2914 | break; |
b8aa1682 | 2915 | case RELAYD_ADD_STREAM: |
58eb9381 | 2916 | ret = relay_add_stream(recv_hdr, conn); |
b8aa1682 JD |
2917 | break; |
2918 | case RELAYD_START_DATA: | |
58eb9381 | 2919 | ret = relay_start(recv_hdr, conn); |
b8aa1682 JD |
2920 | break; |
2921 | case RELAYD_SEND_METADATA: | |
58eb9381 | 2922 | ret = relay_recv_metadata(recv_hdr, conn); |
b8aa1682 JD |
2923 | break; |
2924 | case RELAYD_VERSION: | |
58eb9381 | 2925 | ret = relay_send_version(recv_hdr, conn); |
b8aa1682 | 2926 | break; |
173af62f | 2927 | case RELAYD_CLOSE_STREAM: |
58eb9381 | 2928 | ret = relay_close_stream(recv_hdr, conn); |
173af62f | 2929 | break; |
6d805429 | 2930 | case RELAYD_DATA_PENDING: |
58eb9381 | 2931 | ret = relay_data_pending(recv_hdr, conn); |
c8f59ee5 DG |
2932 | break; |
2933 | case RELAYD_QUIESCENT_CONTROL: | |
58eb9381 | 2934 | ret = relay_quiescent_control(recv_hdr, conn); |
c8f59ee5 | 2935 | break; |
f7079f67 | 2936 | case RELAYD_BEGIN_DATA_PENDING: |
58eb9381 | 2937 | ret = relay_begin_data_pending(recv_hdr, conn); |
f7079f67 DG |
2938 | break; |
2939 | case RELAYD_END_DATA_PENDING: | |
58eb9381 | 2940 | ret = relay_end_data_pending(recv_hdr, conn); |
f7079f67 | 2941 | break; |
1c20f0e2 | 2942 | case RELAYD_SEND_INDEX: |
58eb9381 | 2943 | ret = relay_recv_index(recv_hdr, conn); |
1c20f0e2 | 2944 | break; |
a4baae1b | 2945 | case RELAYD_STREAMS_SENT: |
58eb9381 | 2946 | ret = relay_streams_sent(recv_hdr, conn); |
a4baae1b | 2947 | break; |
93ec662e JD |
2948 | case RELAYD_RESET_METADATA: |
2949 | ret = relay_reset_metadata(recv_hdr, conn); | |
2950 | break; | |
d3ecc550 JD |
2951 | case RELAYD_ROTATE_STREAM: |
2952 | ret = relay_rotate_session_stream(recv_hdr, conn); | |
2953 | break; | |
00fb02ac JD |
2954 | case RELAYD_ROTATE_RENAME: |
2955 | ret = relay_rotate_rename(recv_hdr, conn); | |
2956 | break; | |
e2acc8d2 JD |
2957 | case RELAYD_ROTATE_PENDING: |
2958 | ret = relay_rotate_pending(recv_hdr, conn); | |
2959 | break; | |
a1ae2ea5 JD |
2960 | case RELAYD_MKDIR: |
2961 | ret = relay_mkdir(recv_hdr, conn); | |
2962 | break; | |
b8aa1682 JD |
2963 | case RELAYD_UPDATE_SYNC_INFO: |
2964 | default: | |
2965 | ERR("Received unknown command (%u)", be32toh(recv_hdr->cmd)); | |
58eb9381 | 2966 | relay_unknown_command(conn); |
b8aa1682 JD |
2967 | ret = -1; |
2968 | goto end; | |
2969 | } | |
2970 | ||
2971 | end: | |
2972 | return ret; | |
2973 | } | |
2974 | ||
7d2f7452 DG |
2975 | /* |
2976 | * Handle index for a data stream. | |
2977 | * | |
7591bab1 | 2978 | * Called with the stream lock held. |
7d2f7452 DG |
2979 | * |
2980 | * Return 0 on success else a negative value. | |
2981 | */ | |
2982 | static int handle_index_data(struct relay_stream *stream, uint64_t net_seq_num, | |
d3ecc550 | 2983 | int rotate_index, bool *flushed, uint64_t total_size) |
7d2f7452 | 2984 | { |
7591bab1 MD |
2985 | int ret = 0; |
2986 | uint64_t data_offset; | |
2987 | struct relay_index *index; | |
7d2f7452 | 2988 | |
7d2f7452 DG |
2989 | /* Get data offset because we are about to update the index. */ |
2990 | data_offset = htobe64(stream->tracefile_size_current); | |
2991 | ||
65d66b19 MD |
2992 | DBG("handle_index_data: stream %" PRIu64 " net_seq_num %" PRIu64 " data offset %" PRIu64, |
2993 | stream->stream_handle, net_seq_num, stream->tracefile_size_current); | |
7591bab1 | 2994 | |
7d2f7452 | 2995 | /* |
7591bab1 MD |
2996 | * Lookup for an existing index for that stream id/sequence |
2997 | * number. If it exists, the control thread has already received the | |
2998 | * data for it, thus we need to write it to disk. | |
7d2f7452 | 2999 | */ |
7591bab1 | 3000 | index = relay_index_get_by_id_or_create(stream, net_seq_num); |
7d2f7452 | 3001 | if (!index) { |
7591bab1 MD |
3002 | ret = -1; |
3003 | goto end; | |
7d2f7452 DG |
3004 | } |
3005 | ||
f8f3885c | 3006 | if (rotate_index || !stream->index_file) { |
d3ecc550 JD |
3007 | ret = create_rotate_index_file(stream); |
3008 | if (ret < 0) { | |
3009 | ERR("Failed to rotate index"); | |
7591bab1 MD |
3010 | /* Put self-ref for this index due to error. */ |
3011 | relay_index_put(index); | |
f8f3885c | 3012 | index = NULL; |
7591bab1 | 3013 | goto end; |
7d2f7452 | 3014 | } |
7d2f7452 DG |
3015 | } |
3016 | ||
f8f3885c | 3017 | if (relay_index_set_file(index, stream->index_file, data_offset)) { |
7591bab1 MD |
3018 | ret = -1; |
3019 | /* Put self-ref for this index due to error. */ | |
3020 | relay_index_put(index); | |
f8f3885c | 3021 | index = NULL; |
7591bab1 | 3022 | goto end; |
7d2f7452 DG |
3023 | } |
3024 | ||
7591bab1 MD |
3025 | ret = relay_index_try_flush(index); |
3026 | if (ret == 0) { | |
a44ca2ca MD |
3027 | tracefile_array_commit_seq(stream->tfa); |
3028 | stream->index_received_seqcount++; | |
d3ecc550 | 3029 | *flushed = true; |
7591bab1 | 3030 | } else if (ret > 0) { |
d3ecc550 | 3031 | index->total_size = total_size; |
7591bab1 MD |
3032 | /* No flush. */ |
3033 | ret = 0; | |
3034 | } else { | |
3035 | /* Put self-ref for this index due to error. */ | |
3036 | relay_index_put(index); | |
f8f3885c | 3037 | index = NULL; |
7591bab1 MD |
3038 | ret = -1; |
3039 | } | |
3040 | end: | |
7d2f7452 DG |
3041 | return ret; |
3042 | } | |
3043 | ||
b8aa1682 JD |
3044 | /* |
3045 | * relay_process_data: Process the data received on the data socket | |
3046 | */ | |
7591bab1 | 3047 | static int relay_process_data(struct relay_connection *conn) |
b8aa1682 | 3048 | { |
7d2f7452 | 3049 | int ret = 0, rotate_index = 0; |
6cd525e8 | 3050 | ssize_t size_ret; |
b8aa1682 JD |
3051 | struct relay_stream *stream; |
3052 | struct lttcomm_relayd_data_hdr data_hdr; | |
7d2f7452 | 3053 | uint64_t stream_id; |
173af62f | 3054 | uint64_t net_seq_num; |
b8aa1682 | 3055 | uint32_t data_size; |
2a174661 | 3056 | struct relay_session *session; |
bda7c7b9 | 3057 | bool new_stream = false, close_requested = false; |
0848dba7 MD |
3058 | size_t chunk_size = RECV_DATA_BUFFER_SIZE; |
3059 | size_t recv_off = 0; | |
3060 | char data_buffer[chunk_size]; | |
d3ecc550 | 3061 | bool index_flushed = false; |
b8aa1682 | 3062 | |
58eb9381 | 3063 | ret = conn->sock->ops->recvmsg(conn->sock, &data_hdr, |
7c5aef62 | 3064 | sizeof(struct lttcomm_relayd_data_hdr), 0); |
b8aa1682 | 3065 | if (ret <= 0) { |
a6cd2b97 DG |
3066 | if (ret == 0) { |
3067 | /* Orderly shutdown. Not necessary to print an error. */ | |
58eb9381 | 3068 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); |
a6cd2b97 | 3069 | } else { |
58eb9381 | 3070 | ERR("Unable to receive data header on sock %d", conn->sock->fd); |
a6cd2b97 | 3071 | } |
b8aa1682 JD |
3072 | ret = -1; |
3073 | goto end; | |
3074 | } | |
3075 | ||
3076 | stream_id = be64toh(data_hdr.stream_id); | |
7591bab1 | 3077 | stream = stream_get_by_id(stream_id); |
b8aa1682 | 3078 | if (!stream) { |
65d66b19 | 3079 | ERR("relay_process_data: Cannot find stream %" PRIu64, stream_id); |
b8aa1682 | 3080 | ret = -1; |
7591bab1 | 3081 | goto end; |
b8aa1682 | 3082 | } |
7591bab1 | 3083 | session = stream->trace->session; |
b8aa1682 | 3084 | data_size = be32toh(data_hdr.data_size); |
b8aa1682 | 3085 | |
173af62f DG |
3086 | net_seq_num = be64toh(data_hdr.net_seq_num); |
3087 | ||
77c7c900 | 3088 | DBG3("Receiving data of size %u for stream id %" PRIu64 " seqnum %" PRIu64, |
173af62f | 3089 | data_size, stream_id, net_seq_num); |
b8aa1682 | 3090 | |
7591bab1 MD |
3091 | pthread_mutex_lock(&stream->lock); |
3092 | ||
1c20f0e2 | 3093 | /* Check if a rotation is needed. */ |
0f907de1 JD |
3094 | if (stream->tracefile_size > 0 && |
3095 | (stream->tracefile_size_current + data_size) > | |
3096 | stream->tracefile_size) { | |
a44ca2ca MD |
3097 | uint64_t old_id, new_id; |
3098 | ||
3099 | old_id = tracefile_array_get_file_index_head(stream->tfa); | |
3100 | tracefile_array_file_rotate(stream->tfa); | |
3101 | ||
3102 | /* new_id is updated by utils_rotate_stream_file. */ | |
3103 | new_id = old_id; | |
6b6b9a5a | 3104 | |
7591bab1 MD |
3105 | ret = utils_rotate_stream_file(stream->path_name, |
3106 | stream->channel_name, stream->tracefile_size, | |
3107 | stream->tracefile_count, -1, | |
3108 | -1, stream->stream_fd->fd, | |
a44ca2ca | 3109 | &new_id, &stream->stream_fd->fd); |
0f907de1 | 3110 | if (ret < 0) { |
1c20f0e2 | 3111 | ERR("Rotating stream output file"); |
7591bab1 MD |
3112 | goto end_stream_unlock; |
3113 | } | |
7591bab1 MD |
3114 | /* |
3115 | * Reset current size because we just performed a stream | |
3116 | * rotation. | |
3117 | */ | |
a6976990 | 3118 | stream->tracefile_size_current = 0; |
1c20f0e2 JD |
3119 | rotate_index = 1; |
3120 | } | |
3121 | ||
1c20f0e2 | 3122 | /* |
7591bab1 MD |
3123 | * Index are handled in protocol version 2.4 and above. Also, |
3124 | * snapshot and index are NOT supported. | |
1c20f0e2 | 3125 | */ |
2a174661 | 3126 | if (session->minor >= 4 && !session->snapshot) { |
d3ecc550 JD |
3127 | ret = handle_index_data(stream, net_seq_num, rotate_index, |
3128 | &index_flushed, | |
3129 | data_size + be32toh(data_hdr.padding_size)); | |
1c20f0e2 | 3130 | if (ret < 0) { |
65d66b19 MD |
3131 | ERR("handle_index_data: fail stream %" PRIu64 " net_seq_num %" PRIu64 " ret %d", |
3132 | stream->stream_handle, net_seq_num, ret); | |
7591bab1 | 3133 | goto end_stream_unlock; |
1c20f0e2 | 3134 | } |
1c20f0e2 JD |
3135 | } |
3136 | ||
0848dba7 MD |
3137 | for (recv_off = 0; recv_off < data_size; recv_off += chunk_size) { |
3138 | size_t recv_size = min(data_size - recv_off, chunk_size); | |
1d4dfdef | 3139 | |
0848dba7 MD |
3140 | ret = conn->sock->ops->recvmsg(conn->sock, data_buffer, recv_size, 0); |
3141 | if (ret <= 0) { | |
3142 | if (ret == 0) { | |
3143 | /* Orderly shutdown. Not necessary to print an error. */ | |
3144 | DBG("Socket %d did an orderly shutdown", conn->sock->fd); | |
3145 | } else { | |
3146 | ERR("Socket %d error %d", conn->sock->fd, ret); | |
3147 | } | |
3148 | ret = -1; | |
3149 | goto end_stream_unlock; | |
3150 | } | |
3151 | ||
3152 | /* Write data to stream output fd. */ | |
3153 | size_ret = lttng_write(stream->stream_fd->fd, data_buffer, | |
3154 | recv_size); | |
3155 | if (size_ret < recv_size) { | |
3156 | ERR("Relay error writing data to file"); | |
3157 | ret = -1; | |
3158 | goto end_stream_unlock; | |
3159 | } | |
3160 | ||
3161 | DBG2("Relay wrote %zd bytes to tracefile for stream id %" PRIu64, | |
3162 | size_ret, stream->stream_handle); | |
3163 | } | |
5ab7344e | 3164 | |
7591bab1 MD |
3165 | ret = write_padding_to_file(stream->stream_fd->fd, |
3166 | be32toh(data_hdr.padding_size)); | |
1d4dfdef | 3167 | if (ret < 0) { |
65d66b19 MD |
3168 | ERR("write_padding_to_file: fail stream %" PRIu64 " net_seq_num %" PRIu64 " ret %d", |
3169 | stream->stream_handle, net_seq_num, ret); | |
7591bab1 | 3170 | goto end_stream_unlock; |
1d4dfdef | 3171 | } |
7591bab1 MD |
3172 | stream->tracefile_size_current += |
3173 | data_size + be32toh(data_hdr.padding_size); | |
c0bae11d MD |
3174 | if (stream->prev_seq == -1ULL) { |
3175 | new_stream = true; | |
3176 | } | |
d3ecc550 JD |
3177 | if (index_flushed) { |
3178 | stream->pos_after_last_complete_data_index = | |
3179 | stream->tracefile_size_current; | |
3180 | } | |
c0bae11d | 3181 | |
173af62f DG |
3182 | stream->prev_seq = net_seq_num; |
3183 | ||
d3ecc550 JD |
3184 | ret = try_rotate_stream(stream); |
3185 | if (ret < 0) { | |
3186 | goto end_stream_unlock; | |
3187 | } | |
3188 | ||
7591bab1 | 3189 | end_stream_unlock: |
bda7c7b9 | 3190 | close_requested = stream->close_requested; |
7591bab1 | 3191 | pthread_mutex_unlock(&stream->lock); |
bda7c7b9 JG |
3192 | if (close_requested) { |
3193 | try_stream_close(stream); | |
3194 | } | |
3195 | ||
c0bae11d MD |
3196 | if (new_stream) { |
3197 | pthread_mutex_lock(&session->lock); | |
3198 | uatomic_set(&session->new_streams, 1); | |
3199 | pthread_mutex_unlock(&session->lock); | |
3200 | } | |
7591bab1 | 3201 | stream_put(stream); |
b8aa1682 JD |
3202 | end: |
3203 | return ret; | |
3204 | } | |
3205 | ||
7591bab1 | 3206 | static void cleanup_connection_pollfd(struct lttng_poll_event *events, int pollfd) |
b8aa1682 JD |
3207 | { |
3208 | int ret; | |
3209 | ||
58eb9381 | 3210 | (void) lttng_poll_del(events, pollfd); |
b8aa1682 JD |
3211 | |
3212 | ret = close(pollfd); | |
3213 | if (ret < 0) { | |
3214 | ERR("Closing pollfd %d", pollfd); | |
3215 | } | |
3216 | } | |
3217 | ||
7591bab1 MD |
3218 | static void relay_thread_close_connection(struct lttng_poll_event *events, |
3219 | int pollfd, struct relay_connection *conn) | |
9d1bbf21 | 3220 | { |
7591bab1 | 3221 | const char *type_str; |
2a174661 | 3222 | |
7591bab1 MD |
3223 | switch (conn->type) { |
3224 | case RELAY_DATA: | |
3225 | type_str = "Data"; | |
3226 | break; | |
3227 | case RELAY_CONTROL: | |
3228 | type_str = "Control"; | |
3229 | break; | |
3230 | case RELAY_VIEWER_COMMAND: | |
3231 | type_str = "Viewer Command"; | |
3232 | break; | |
3233 | case RELAY_VIEWER_NOTIFICATION: | |
3234 | type_str = "Viewer Notification"; | |
3235 | break; | |
3236 | default: | |
3237 | type_str = "Unknown"; | |
9d1bbf21 | 3238 | } |
7591bab1 MD |
3239 | cleanup_connection_pollfd(events, pollfd); |
3240 | connection_put(conn); | |
3241 | DBG("%s connection closed with %d", type_str, pollfd); | |
b8aa1682 JD |
3242 | } |
3243 | ||
3244 | /* | |
3245 | * This thread does the actual work | |
3246 | */ | |
7591bab1 | 3247 | static void *relay_thread_worker(void *data) |
b8aa1682 | 3248 | { |
beaad64c DG |
3249 | int ret, err = -1, last_seen_data_fd = -1; |
3250 | uint32_t nb_fd; | |
b8aa1682 JD |
3251 | struct lttng_poll_event events; |
3252 | struct lttng_ht *relay_connections_ht; | |
b8aa1682 | 3253 | struct lttng_ht_iter iter; |
b8aa1682 | 3254 | struct lttcomm_relayd_hdr recv_hdr; |
90e7d72f | 3255 | struct relay_connection *destroy_conn = NULL; |
b8aa1682 JD |
3256 | |
3257 | DBG("[thread] Relay worker started"); | |
3258 | ||
9d1bbf21 MD |
3259 | rcu_register_thread(); |
3260 | ||
55706a7d MD |
3261 | health_register(health_relayd, HEALTH_RELAYD_TYPE_WORKER); |
3262 | ||
9b5e0863 MD |
3263 | if (testpoint(relayd_thread_worker)) { |
3264 | goto error_testpoint; | |
3265 | } | |
3266 | ||
f385ae0a MD |
3267 | health_code_update(); |
3268 | ||
b8aa1682 JD |
3269 | /* table of connections indexed on socket */ |
3270 | relay_connections_ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
095a4ae5 MD |
3271 | if (!relay_connections_ht) { |
3272 | goto relay_connections_ht_error; | |
3273 | } | |
b8aa1682 | 3274 | |
b8aa1682 JD |
3275 | ret = create_thread_poll_set(&events, 2); |
3276 | if (ret < 0) { | |
3277 | goto error_poll_create; | |
3278 | } | |
3279 | ||
58eb9381 | 3280 | ret = lttng_poll_add(&events, relay_conn_pipe[0], LPOLLIN | LPOLLRDHUP); |
b8aa1682 JD |
3281 | if (ret < 0) { |
3282 | goto error; | |
3283 | } | |
3284 | ||
beaad64c | 3285 | restart: |
b8aa1682 | 3286 | while (1) { |
beaad64c DG |
3287 | int idx = -1, i, seen_control = 0, last_notdel_data_fd = -1; |
3288 | ||
f385ae0a MD |
3289 | health_code_update(); |
3290 | ||
b8aa1682 | 3291 | /* Infinite blocking call, waiting for transmission */ |
87c1611d | 3292 | DBG3("Relayd worker thread polling..."); |
f385ae0a | 3293 | health_poll_entry(); |
b8aa1682 | 3294 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 3295 | health_poll_exit(); |
b8aa1682 JD |
3296 | if (ret < 0) { |
3297 | /* | |
3298 | * Restart interrupted system call. | |
3299 | */ | |
3300 | if (errno == EINTR) { | |
3301 | goto restart; | |
3302 | } | |
3303 | goto error; | |
3304 | } | |
3305 | ||
0d9c5d77 DG |
3306 | nb_fd = ret; |
3307 | ||
beaad64c | 3308 | /* |
7591bab1 MD |
3309 | * Process control. The control connection is |
3310 | * prioritized so we don't starve it with high | |
3311 | * throughput tracing data on the data connection. | |
beaad64c | 3312 | */ |
b8aa1682 JD |
3313 | for (i = 0; i < nb_fd; i++) { |
3314 | /* Fetch once the poll data */ | |
beaad64c DG |
3315 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); |
3316 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
b8aa1682 | 3317 | |
f385ae0a MD |
3318 | health_code_update(); |
3319 | ||
fd20dac9 | 3320 | if (!revents) { |
7591bab1 MD |
3321 | /* |
3322 | * No activity for this FD (poll | |
3323 | * implementation). | |
3324 | */ | |
fd20dac9 MD |
3325 | continue; |
3326 | } | |
3327 | ||
b8aa1682 JD |
3328 | /* Thread quit pipe has been closed. Killing thread. */ |
3329 | ret = check_thread_quit_pipe(pollfd, revents); | |
3330 | if (ret) { | |
095a4ae5 MD |
3331 | err = 0; |
3332 | goto exit; | |
b8aa1682 JD |
3333 | } |
3334 | ||
58eb9381 DG |
3335 | /* Inspect the relay conn pipe for new connection */ |
3336 | if (pollfd == relay_conn_pipe[0]) { | |
03e43155 | 3337 | if (revents & LPOLLIN) { |
90e7d72f JG |
3338 | struct relay_connection *conn; |
3339 | ||
58eb9381 | 3340 | ret = lttng_read(relay_conn_pipe[0], &conn, sizeof(conn)); |
b8aa1682 JD |
3341 | if (ret < 0) { |
3342 | goto error; | |
3343 | } | |
58eb9381 DG |
3344 | lttng_poll_add(&events, conn->sock->fd, |
3345 | LPOLLIN | LPOLLRDHUP); | |
7591bab1 | 3346 | connection_ht_add(relay_connections_ht, conn); |
58eb9381 | 3347 | DBG("Connection socket %d added", conn->sock->fd); |
03e43155 MD |
3348 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3349 | ERR("Relay connection pipe error"); | |
3350 | goto error; | |
3351 | } else { | |
3352 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
3353 | goto error; | |
b8aa1682 | 3354 | } |
58eb9381 | 3355 | } else { |
90e7d72f JG |
3356 | struct relay_connection *ctrl_conn; |
3357 | ||
7591bab1 | 3358 | ctrl_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
58eb9381 | 3359 | /* If not found, there is a synchronization issue. */ |
90e7d72f | 3360 | assert(ctrl_conn); |
58eb9381 | 3361 | |
03e43155 MD |
3362 | if (ctrl_conn->type == RELAY_DATA) { |
3363 | if (revents & LPOLLIN) { | |
beaad64c DG |
3364 | /* |
3365 | * Flag the last seen data fd not deleted. It will be | |
3366 | * used as the last seen fd if any fd gets deleted in | |
3367 | * this first loop. | |
3368 | */ | |
3369 | last_notdel_data_fd = pollfd; | |
3370 | } | |
03e43155 MD |
3371 | goto put_ctrl_connection; |
3372 | } | |
3373 | assert(ctrl_conn->type == RELAY_CONTROL); | |
3374 | ||
3375 | if (revents & LPOLLIN) { | |
3376 | ret = ctrl_conn->sock->ops->recvmsg(ctrl_conn->sock, | |
3377 | &recv_hdr, sizeof(recv_hdr), 0); | |
3378 | if (ret <= 0) { | |
3379 | /* Connection closed */ | |
3380 | relay_thread_close_connection(&events, pollfd, | |
3381 | ctrl_conn); | |
3382 | } else { | |
3383 | ret = relay_process_control(&recv_hdr, ctrl_conn); | |
3384 | if (ret < 0) { | |
3385 | /* Clear the session on error. */ | |
3386 | relay_thread_close_connection(&events, | |
3387 | pollfd, ctrl_conn); | |
3388 | } | |
3389 | seen_control = 1; | |
3390 | } | |
3391 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
3392 | relay_thread_close_connection(&events, | |
3393 | pollfd, ctrl_conn); | |
3394 | if (last_seen_data_fd == pollfd) { | |
3395 | last_seen_data_fd = last_notdel_data_fd; | |
3396 | } | |
58eb9381 | 3397 | } else { |
03e43155 MD |
3398 | ERR("Unexpected poll events %u for control sock %d", |
3399 | revents, pollfd); | |
3400 | connection_put(ctrl_conn); | |
3401 | goto error; | |
beaad64c | 3402 | } |
03e43155 | 3403 | put_ctrl_connection: |
7591bab1 | 3404 | connection_put(ctrl_conn); |
beaad64c DG |
3405 | } |
3406 | } | |
3407 | ||
3408 | /* | |
3409 | * The last loop handled a control request, go back to poll to make | |
3410 | * sure we prioritise the control socket. | |
3411 | */ | |
3412 | if (seen_control) { | |
3413 | continue; | |
3414 | } | |
3415 | ||
3416 | if (last_seen_data_fd >= 0) { | |
3417 | for (i = 0; i < nb_fd; i++) { | |
3418 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
f385ae0a MD |
3419 | |
3420 | health_code_update(); | |
3421 | ||
beaad64c DG |
3422 | if (last_seen_data_fd == pollfd) { |
3423 | idx = i; | |
3424 | break; | |
3425 | } | |
3426 | } | |
3427 | } | |
3428 | ||
3429 | /* Process data connection. */ | |
3430 | for (i = idx + 1; i < nb_fd; i++) { | |
3431 | /* Fetch the poll data. */ | |
3432 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); | |
3433 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
90e7d72f | 3434 | struct relay_connection *data_conn; |
beaad64c | 3435 | |
f385ae0a MD |
3436 | health_code_update(); |
3437 | ||
fd20dac9 MD |
3438 | if (!revents) { |
3439 | /* No activity for this FD (poll implementation). */ | |
3440 | continue; | |
3441 | } | |
3442 | ||
beaad64c | 3443 | /* Skip the command pipe. It's handled in the first loop. */ |
58eb9381 | 3444 | if (pollfd == relay_conn_pipe[0]) { |
beaad64c DG |
3445 | continue; |
3446 | } | |
3447 | ||
7591bab1 | 3448 | data_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
90e7d72f | 3449 | if (!data_conn) { |
fd20dac9 | 3450 | /* Skip it. Might be removed before. */ |
fd20dac9 MD |
3451 | continue; |
3452 | } | |
03e43155 MD |
3453 | if (data_conn->type == RELAY_CONTROL) { |
3454 | goto put_data_connection; | |
3455 | } | |
3456 | assert(data_conn->type == RELAY_DATA); | |
fd20dac9 MD |
3457 | |
3458 | if (revents & LPOLLIN) { | |
90e7d72f | 3459 | ret = relay_process_data(data_conn); |
fd20dac9 MD |
3460 | /* Connection closed */ |
3461 | if (ret < 0) { | |
7591bab1 | 3462 | relay_thread_close_connection(&events, pollfd, |
03e43155 | 3463 | data_conn); |
fd20dac9 MD |
3464 | /* |
3465 | * Every goto restart call sets the last seen fd where | |
3466 | * here we don't really care since we gracefully | |
3467 | * continue the loop after the connection is deleted. | |
3468 | */ | |
3469 | } else { | |
3470 | /* Keep last seen port. */ | |
3471 | last_seen_data_fd = pollfd; | |
7591bab1 | 3472 | connection_put(data_conn); |
fd20dac9 | 3473 | goto restart; |
b8aa1682 | 3474 | } |
03e43155 MD |
3475 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3476 | relay_thread_close_connection(&events, pollfd, | |
3477 | data_conn); | |
3478 | } else { | |
3479 | ERR("Unknown poll events %u for data sock %d", | |
3480 | revents, pollfd); | |
b8aa1682 | 3481 | } |
03e43155 | 3482 | put_data_connection: |
7591bab1 | 3483 | connection_put(data_conn); |
b8aa1682 | 3484 | } |
beaad64c | 3485 | last_seen_data_fd = -1; |
b8aa1682 JD |
3486 | } |
3487 | ||
f385ae0a MD |
3488 | /* Normal exit, no error */ |
3489 | ret = 0; | |
3490 | ||
095a4ae5 | 3491 | exit: |
b8aa1682 | 3492 | error: |
58eb9381 | 3493 | /* Cleanup reamaining connection object. */ |
9d1bbf21 | 3494 | rcu_read_lock(); |
90e7d72f JG |
3495 | cds_lfht_for_each_entry(relay_connections_ht->ht, &iter.iter, |
3496 | destroy_conn, | |
58eb9381 | 3497 | sock_n.node) { |
f385ae0a | 3498 | health_code_update(); |
98ba050e JR |
3499 | |
3500 | if (session_abort(destroy_conn->session)) { | |
3501 | assert(0); | |
3502 | } | |
3503 | ||
7591bab1 MD |
3504 | /* |
3505 | * No need to grab another ref, because we own | |
3506 | * destroy_conn. | |
3507 | */ | |
3508 | relay_thread_close_connection(&events, destroy_conn->sock->fd, | |
3509 | destroy_conn); | |
b8aa1682 | 3510 | } |
94d49140 | 3511 | rcu_read_unlock(); |
7591bab1 MD |
3512 | |
3513 | lttng_poll_clean(&events); | |
7d2f7452 | 3514 | error_poll_create: |
b8aa1682 | 3515 | lttng_ht_destroy(relay_connections_ht); |
095a4ae5 | 3516 | relay_connections_ht_error: |
58eb9381 DG |
3517 | /* Close relay conn pipes */ |
3518 | utils_close_pipe(relay_conn_pipe); | |
095a4ae5 MD |
3519 | if (err) { |
3520 | DBG("Thread exited with error"); | |
3521 | } | |
b8aa1682 | 3522 | DBG("Worker thread cleanup complete"); |
9b5e0863 | 3523 | error_testpoint: |
f385ae0a MD |
3524 | if (err) { |
3525 | health_error(); | |
3526 | ERR("Health error occurred in %s", __func__); | |
3527 | } | |
3528 | health_unregister(health_relayd); | |
9d1bbf21 | 3529 | rcu_unregister_thread(); |
b4aacfdc | 3530 | lttng_relay_stop_threads(); |
b8aa1682 JD |
3531 | return NULL; |
3532 | } | |
3533 | ||
3534 | /* | |
3535 | * Create the relay command pipe to wake thread_manage_apps. | |
3536 | * Closed in cleanup(). | |
3537 | */ | |
58eb9381 | 3538 | static int create_relay_conn_pipe(void) |
b8aa1682 | 3539 | { |
a02de639 | 3540 | int ret; |
b8aa1682 | 3541 | |
58eb9381 | 3542 | ret = utils_create_pipe_cloexec(relay_conn_pipe); |
b8aa1682 | 3543 | |
b8aa1682 JD |
3544 | return ret; |
3545 | } | |
3546 | ||
3547 | /* | |
3548 | * main | |
3549 | */ | |
3550 | int main(int argc, char **argv) | |
3551 | { | |
178a0557 | 3552 | int ret = 0, retval = 0; |
b8aa1682 JD |
3553 | void *status; |
3554 | ||
b8aa1682 JD |
3555 | /* Parse arguments */ |
3556 | progname = argv[0]; | |
178a0557 MD |
3557 | if (set_options(argc, argv)) { |
3558 | retval = -1; | |
3559 | goto exit_options; | |
b8aa1682 JD |
3560 | } |
3561 | ||
178a0557 MD |
3562 | if (set_signal_handler()) { |
3563 | retval = -1; | |
3564 | goto exit_options; | |
b8aa1682 JD |
3565 | } |
3566 | ||
4d513a50 DG |
3567 | /* Try to create directory if -o, --output is specified. */ |
3568 | if (opt_output_path) { | |
994fa64f DG |
3569 | if (*opt_output_path != '/') { |
3570 | ERR("Please specify an absolute path for -o, --output PATH"); | |
178a0557 MD |
3571 | retval = -1; |
3572 | goto exit_options; | |
994fa64f DG |
3573 | } |
3574 | ||
d77dded2 JG |
3575 | ret = utils_mkdir_recursive(opt_output_path, S_IRWXU | S_IRWXG, |
3576 | -1, -1); | |
4d513a50 DG |
3577 | if (ret < 0) { |
3578 | ERR("Unable to create %s", opt_output_path); | |
178a0557 MD |
3579 | retval = -1; |
3580 | goto exit_options; | |
4d513a50 DG |
3581 | } |
3582 | } | |
3583 | ||
b8aa1682 | 3584 | /* Daemonize */ |
b5218ffb | 3585 | if (opt_daemon || opt_background) { |
3fd27398 MD |
3586 | int i; |
3587 | ||
3588 | ret = lttng_daemonize(&child_ppid, &recv_child_signal, | |
3589 | !opt_background); | |
b8aa1682 | 3590 | if (ret < 0) { |
178a0557 MD |
3591 | retval = -1; |
3592 | goto exit_options; | |
b8aa1682 | 3593 | } |
3fd27398 MD |
3594 | |
3595 | /* | |
3596 | * We are in the child. Make sure all other file | |
3597 | * descriptors are closed, in case we are called with | |
3598 | * more opened file descriptors than the standard ones. | |
3599 | */ | |
3600 | for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) { | |
3601 | (void) close(i); | |
3602 | } | |
3603 | } | |
3604 | ||
178a0557 MD |
3605 | /* Initialize thread health monitoring */ |
3606 | health_relayd = health_app_create(NR_HEALTH_RELAYD_TYPES); | |
3607 | if (!health_relayd) { | |
3608 | PERROR("health_app_create error"); | |
3609 | retval = -1; | |
3610 | goto exit_health_app_create; | |
3611 | } | |
3612 | ||
3fd27398 | 3613 | /* Create thread quit pipe */ |
178a0557 MD |
3614 | if (init_thread_quit_pipe()) { |
3615 | retval = -1; | |
3616 | goto exit_init_data; | |
b8aa1682 JD |
3617 | } |
3618 | ||
b8aa1682 | 3619 | /* Setup the thread apps communication pipe. */ |
178a0557 MD |
3620 | if (create_relay_conn_pipe()) { |
3621 | retval = -1; | |
3622 | goto exit_init_data; | |
b8aa1682 JD |
3623 | } |
3624 | ||
3625 | /* Init relay command queue. */ | |
8bdee6e2 | 3626 | cds_wfcq_init(&relay_conn_queue.head, &relay_conn_queue.tail); |
b8aa1682 | 3627 | |
554831e7 MD |
3628 | /* Initialize communication library */ |
3629 | lttcomm_init(); | |
87e45c13 | 3630 | lttcomm_inet_init(); |
554831e7 | 3631 | |
d3e2ba59 | 3632 | /* tables of sessions indexed by session ID */ |
7591bab1 MD |
3633 | sessions_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3634 | if (!sessions_ht) { | |
178a0557 MD |
3635 | retval = -1; |
3636 | goto exit_init_data; | |
d3e2ba59 JD |
3637 | } |
3638 | ||
3639 | /* tables of streams indexed by stream ID */ | |
2a174661 | 3640 | relay_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
d3e2ba59 | 3641 | if (!relay_streams_ht) { |
178a0557 MD |
3642 | retval = -1; |
3643 | goto exit_init_data; | |
d3e2ba59 JD |
3644 | } |
3645 | ||
3646 | /* tables of streams indexed by stream ID */ | |
92c6ca54 DG |
3647 | viewer_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3648 | if (!viewer_streams_ht) { | |
178a0557 MD |
3649 | retval = -1; |
3650 | goto exit_init_data; | |
55706a7d MD |
3651 | } |
3652 | ||
65931c8b | 3653 | ret = utils_create_pipe(health_quit_pipe); |
178a0557 MD |
3654 | if (ret) { |
3655 | retval = -1; | |
3656 | goto exit_health_quit_pipe; | |
65931c8b MD |
3657 | } |
3658 | ||
3659 | /* Create thread to manage the client socket */ | |
1a1a34b4 | 3660 | ret = pthread_create(&health_thread, default_pthread_attr(), |
65931c8b | 3661 | thread_manage_health, (void *) NULL); |
178a0557 MD |
3662 | if (ret) { |
3663 | errno = ret; | |
65931c8b | 3664 | PERROR("pthread_create health"); |
178a0557 MD |
3665 | retval = -1; |
3666 | goto exit_health_thread; | |
65931c8b MD |
3667 | } |
3668 | ||
b8aa1682 | 3669 | /* Setup the dispatcher thread */ |
1a1a34b4 | 3670 | ret = pthread_create(&dispatcher_thread, default_pthread_attr(), |
b8aa1682 | 3671 | relay_thread_dispatcher, (void *) NULL); |
178a0557 MD |
3672 | if (ret) { |
3673 | errno = ret; | |
b8aa1682 | 3674 | PERROR("pthread_create dispatcher"); |
178a0557 MD |
3675 | retval = -1; |
3676 | goto exit_dispatcher_thread; | |
b8aa1682 JD |
3677 | } |
3678 | ||
3679 | /* Setup the worker thread */ | |
1a1a34b4 | 3680 | ret = pthread_create(&worker_thread, default_pthread_attr(), |
7591bab1 | 3681 | relay_thread_worker, NULL); |
178a0557 MD |
3682 | if (ret) { |
3683 | errno = ret; | |
b8aa1682 | 3684 | PERROR("pthread_create worker"); |
178a0557 MD |
3685 | retval = -1; |
3686 | goto exit_worker_thread; | |
b8aa1682 JD |
3687 | } |
3688 | ||
3689 | /* Setup the listener thread */ | |
1a1a34b4 | 3690 | ret = pthread_create(&listener_thread, default_pthread_attr(), |
b8aa1682 | 3691 | relay_thread_listener, (void *) NULL); |
178a0557 MD |
3692 | if (ret) { |
3693 | errno = ret; | |
b8aa1682 | 3694 | PERROR("pthread_create listener"); |
178a0557 MD |
3695 | retval = -1; |
3696 | goto exit_listener_thread; | |
b8aa1682 JD |
3697 | } |
3698 | ||
7591bab1 | 3699 | ret = relayd_live_create(live_uri); |
178a0557 | 3700 | if (ret) { |
d3e2ba59 | 3701 | ERR("Starting live viewer threads"); |
178a0557 | 3702 | retval = -1; |
50138f51 | 3703 | goto exit_live; |
d3e2ba59 JD |
3704 | } |
3705 | ||
178a0557 MD |
3706 | /* |
3707 | * This is where we start awaiting program completion (e.g. through | |
3708 | * signal that asks threads to teardown). | |
3709 | */ | |
3710 | ||
3711 | ret = relayd_live_join(); | |
3712 | if (ret) { | |
3713 | retval = -1; | |
3714 | } | |
50138f51 | 3715 | exit_live: |
178a0557 | 3716 | |
b8aa1682 | 3717 | ret = pthread_join(listener_thread, &status); |
178a0557 MD |
3718 | if (ret) { |
3719 | errno = ret; | |
3720 | PERROR("pthread_join listener_thread"); | |
3721 | retval = -1; | |
b8aa1682 JD |
3722 | } |
3723 | ||
178a0557 | 3724 | exit_listener_thread: |
b8aa1682 | 3725 | ret = pthread_join(worker_thread, &status); |
178a0557 MD |
3726 | if (ret) { |
3727 | errno = ret; | |
3728 | PERROR("pthread_join worker_thread"); | |
3729 | retval = -1; | |
b8aa1682 JD |
3730 | } |
3731 | ||
178a0557 | 3732 | exit_worker_thread: |
b8aa1682 | 3733 | ret = pthread_join(dispatcher_thread, &status); |
178a0557 MD |
3734 | if (ret) { |
3735 | errno = ret; | |
3736 | PERROR("pthread_join dispatcher_thread"); | |
3737 | retval = -1; | |
b8aa1682 | 3738 | } |
178a0557 | 3739 | exit_dispatcher_thread: |
42415026 | 3740 | |
65931c8b | 3741 | ret = pthread_join(health_thread, &status); |
178a0557 MD |
3742 | if (ret) { |
3743 | errno = ret; | |
3744 | PERROR("pthread_join health_thread"); | |
3745 | retval = -1; | |
65931c8b | 3746 | } |
178a0557 | 3747 | exit_health_thread: |
65931c8b | 3748 | |
65931c8b | 3749 | utils_close_pipe(health_quit_pipe); |
178a0557 | 3750 | exit_health_quit_pipe: |
65931c8b | 3751 | |
178a0557 | 3752 | exit_init_data: |
55706a7d | 3753 | health_app_destroy(health_relayd); |
55706a7d | 3754 | exit_health_app_create: |
178a0557 | 3755 | exit_options: |
4d62fbf8 MD |
3756 | /* |
3757 | * Wait for all pending call_rcu work to complete before tearing | |
3758 | * down data structures. call_rcu worker may be trying to | |
3759 | * perform lookups in those structures. | |
3760 | */ | |
3761 | rcu_barrier(); | |
7591bab1 MD |
3762 | relayd_cleanup(); |
3763 | ||
3764 | /* Ensure all prior call_rcu are done. */ | |
3765 | rcu_barrier(); | |
d3e2ba59 | 3766 | |
178a0557 | 3767 | if (!retval) { |
b8aa1682 | 3768 | exit(EXIT_SUCCESS); |
178a0557 MD |
3769 | } else { |
3770 | exit(EXIT_FAILURE); | |
b8aa1682 | 3771 | } |
b8aa1682 | 3772 | } |