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