Commit | Line | Data |
---|---|---|
826d496d | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> |
3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
fac6795d | 5 | * |
ab5be9fa | 6 | * SPDX-License-Identifier: GPL-2.0-only |
91d76f53 | 7 | * |
fac6795d DG |
8 | */ |
9 | ||
6c1c0768 | 10 | #define _LGPL_SOURCE |
fac6795d DG |
11 | #include <getopt.h> |
12 | #include <grp.h> | |
13 | #include <limits.h> | |
0bb7724a | 14 | #include <paths.h> |
fac6795d DG |
15 | #include <pthread.h> |
16 | #include <signal.h> | |
17 | #include <stdio.h> | |
18 | #include <stdlib.h> | |
19 | #include <string.h> | |
331744e3 | 20 | #include <inttypes.h> |
0fdd1e2c | 21 | #include <sys/mman.h> |
b73401da | 22 | #include <sys/mount.h> |
1e307fab | 23 | #include <sys/resource.h> |
fac6795d DG |
24 | #include <sys/socket.h> |
25 | #include <sys/stat.h> | |
26 | #include <sys/types.h> | |
0fdd1e2c | 27 | #include <sys/wait.h> |
5c827ce0 | 28 | #include <urcu/uatomic.h> |
fac6795d | 29 | #include <unistd.h> |
4f0b90ee | 30 | #include <ctype.h> |
fac6795d | 31 | |
990570ed | 32 | #include <common/common.h> |
d27c42b8 | 33 | #include <common/compat/socket.h> |
e8fa9fb0 | 34 | #include <common/compat/getenv.h> |
db758600 DG |
35 | #include <common/defaults.h> |
36 | #include <common/kernel-consumer/kernel-consumer.h> | |
50c8f484 | 37 | #include <common/futex.h> |
00e2e675 | 38 | #include <common/relayd/relayd.h> |
81b86775 | 39 | #include <common/utils.h> |
3ccdf997 | 40 | #include <common/daemonize.h> |
f40ef1d5 | 41 | #include <common/config/session-config.h> |
dcabc190 | 42 | #include <common/dynamic-buffer.h> |
76fcf151 | 43 | #include <lttng/event-internal.h> |
fac6795d | 44 | |
10a8a223 | 45 | #include "lttng-sessiond.h" |
7972aab2 | 46 | #include "buffer-registry.h" |
54d01ffb | 47 | #include "channel.h" |
2f77fc4b | 48 | #include "cmd.h" |
00e2e675 | 49 | #include "consumer.h" |
099e26bd | 50 | #include "context.h" |
54d01ffb | 51 | #include "event.h" |
90aa04a1 | 52 | #include "event-notifier-error-accounting.h" |
4771f025 | 53 | #include "kernel.h" |
f1e16794 | 54 | #include "kernel-consumer.h" |
75018ab6 | 55 | #include "lttng-ust-ctl.h" |
00e2e675 | 56 | #include "ust-consumer.h" |
8e68d1c8 | 57 | #include "utils.h" |
4063050c | 58 | #include "fd-limit.h" |
8782cc74 | 59 | #include "health-sessiond.h" |
8ac94142 | 60 | #include "testpoint.h" |
f9d2ba6a | 61 | #include "notify-apps.h" |
022d91ba | 62 | #include "agent-thread.h" |
fb198a11 | 63 | #include "save.h" |
b3530820 JG |
64 | #include "notification-thread.h" |
65 | #include "notification-thread-commands.h" | |
db66e574 | 66 | #include "rotation-thread.h" |
7c1d2758 | 67 | #include "agent.h" |
5e97de00 | 68 | #include "ht-cleanup.h" |
e6142f2e | 69 | #include "sessiond-config.h" |
8e319828 | 70 | #include "timer.h" |
a3707772 | 71 | #include "thread.h" |
917a718d | 72 | #include "client.h" |
5d1b0219 | 73 | #include "dispatch.h" |
1785d7f2 | 74 | #include "register.h" |
7649924e | 75 | #include "manage-apps.h" |
5b093681 | 76 | #include "manage-kernel.h" |
1d25334c | 77 | #include "modprobe.h" |
ebaeda94 | 78 | |
4fc83d94 PP |
79 | static const char *help_msg = |
80 | #ifdef LTTNG_EMBED_HELP | |
81 | #include <lttng-sessiond.8.h> | |
82 | #else | |
83 | NULL | |
84 | #endif | |
85 | ; | |
86 | ||
90aa04a1 FD |
87 | #define EVENT_NOTIFIER_ERROR_COUNTER_NUMBER_OF_BUCKET_MAX 65535 |
88 | ||
fac6795d | 89 | const char *progname; |
c9cb3e7d | 90 | static int lockfile_fd = -1; |
a3bc3918 | 91 | static int opt_print_version; |
3bd1e081 | 92 | |
0bb7724a DG |
93 | /* Set to 1 when a SIGUSR1 signal is received. */ |
94 | static int recv_child_signal; | |
95 | ||
26296c48 JG |
96 | /* Command line options */ |
97 | static const struct option long_options[] = { | |
0f5ea17c JG |
98 | { "client-sock", required_argument, 0, 'c' }, |
99 | { "apps-sock", required_argument, 0, 'a' }, | |
100 | { "kconsumerd-cmd-sock", required_argument, 0, '\0' }, | |
101 | { "kconsumerd-err-sock", required_argument, 0, '\0' }, | |
102 | { "ustconsumerd32-cmd-sock", required_argument, 0, '\0' }, | |
103 | { "ustconsumerd32-err-sock", required_argument, 0, '\0' }, | |
104 | { "ustconsumerd64-cmd-sock", required_argument, 0, '\0' }, | |
105 | { "ustconsumerd64-err-sock", required_argument, 0, '\0' }, | |
106 | { "consumerd32-path", required_argument, 0, '\0' }, | |
107 | { "consumerd32-libdir", required_argument, 0, '\0' }, | |
108 | { "consumerd64-path", required_argument, 0, '\0' }, | |
109 | { "consumerd64-libdir", required_argument, 0, '\0' }, | |
110 | { "daemonize", no_argument, 0, 'd' }, | |
111 | { "background", no_argument, 0, 'b' }, | |
112 | { "sig-parent", no_argument, 0, 'S' }, | |
113 | { "help", no_argument, 0, 'h' }, | |
114 | { "group", required_argument, 0, 'g' }, | |
115 | { "version", no_argument, 0, 'V' }, | |
116 | { "quiet", no_argument, 0, 'q' }, | |
117 | { "verbose", no_argument, 0, 'v' }, | |
118 | { "verbose-consumer", no_argument, 0, '\0' }, | |
119 | { "no-kernel", no_argument, 0, '\0' }, | |
120 | { "pidfile", required_argument, 0, 'p' }, | |
121 | { "agent-tcp-port", required_argument, 0, '\0' }, | |
122 | { "config", required_argument, 0, 'f' }, | |
123 | { "load", required_argument, 0, 'l' }, | |
124 | { "kmod-probes", required_argument, 0, '\0' }, | |
125 | { "extra-kmod-probes", required_argument, 0, '\0' }, | |
90aa04a1 | 126 | { "event-notifier-error-number-of-bucket", required_argument, 0, '\0' }, |
26296c48 JG |
127 | { NULL, 0, 0, 0 } |
128 | }; | |
129 | ||
130 | /* Command line options to ignore from configuration file */ | |
131 | static const char *config_ignore_options[] = { "help", "version", "config" }; | |
1d4b027a | 132 | |
099e26bd DG |
133 | /* |
134 | * This pipe is used to inform the thread managing application communication | |
135 | * that a command is queued and ready to be processed. | |
136 | */ | |
76d7553f | 137 | static int apps_cmd_pipe[2] = { -1, -1 }; |
971a61c6 | 138 | static int apps_cmd_notify_pipe[2] = { -1, -1 }; |
099e26bd | 139 | |
099e26bd DG |
140 | /* |
141 | * UST registration command queue. This queue is tied with a futex and uses a N | |
142 | * wakers / 1 waiter implemented and detailed in futex.c/.h | |
143 | * | |
b22c5da8 DG |
144 | * The thread_registration_apps and thread_dispatch_ust_registration uses this |
145 | * queue along with the wait/wake scheme. The thread_manage_apps receives down | |
146 | * the line new application socket and monitors it for any I/O error or clean | |
147 | * close that triggers an unregistration of the application. | |
099e26bd DG |
148 | */ |
149 | static struct ust_cmd_queue ust_cmd_queue; | |
150 | ||
97bc1426 | 151 | /* |
a7333da7 | 152 | * Section name to look for in the daemon configuration file. |
97bc1426 | 153 | */ |
a7333da7 | 154 | static const char * const config_section_name = "sessiond"; |
5e97de00 | 155 | |
a7333da7 JG |
156 | /* Am I root or not. Set to 1 if the daemon is running as root */ |
157 | static int is_root; | |
5eb91c98 | 158 | |
099e26bd DG |
159 | /* |
160 | * Stop all threads by closing the thread quit pipe. | |
161 | */ | |
cf3af59e MD |
162 | static void stop_threads(void) |
163 | { | |
5eb91c98 DG |
164 | int ret; |
165 | ||
cf3af59e MD |
166 | /* Stopping all threads */ |
167 | DBG("Terminating all threads"); | |
a7333da7 | 168 | ret = sessiond_notify_quit_pipe(); |
5eb91c98 DG |
169 | if (ret < 0) { |
170 | ERR("write error on thread quit pipe"); | |
171 | } | |
cf3af59e MD |
172 | } |
173 | ||
e975f9f8 DG |
174 | /* |
175 | * Close every consumer sockets. | |
176 | */ | |
177 | static void close_consumer_sockets(void) | |
178 | { | |
179 | int ret; | |
180 | ||
412d7227 SM |
181 | if (the_kconsumer_data.err_sock >= 0) { |
182 | ret = close(the_kconsumer_data.err_sock); | |
e975f9f8 DG |
183 | if (ret < 0) { |
184 | PERROR("kernel consumer err_sock close"); | |
185 | } | |
186 | } | |
412d7227 SM |
187 | if (the_ustconsumer32_data.err_sock >= 0) { |
188 | ret = close(the_ustconsumer32_data.err_sock); | |
e975f9f8 | 189 | if (ret < 0) { |
a76cbd9f | 190 | PERROR("UST consumerd32 err_sock close"); |
e975f9f8 DG |
191 | } |
192 | } | |
412d7227 SM |
193 | if (the_ustconsumer64_data.err_sock >= 0) { |
194 | ret = close(the_ustconsumer64_data.err_sock); | |
e975f9f8 | 195 | if (ret < 0) { |
a76cbd9f | 196 | PERROR("UST consumerd64 err_sock close"); |
e975f9f8 DG |
197 | } |
198 | } | |
412d7227 SM |
199 | if (the_kconsumer_data.cmd_sock >= 0) { |
200 | ret = close(the_kconsumer_data.cmd_sock); | |
e975f9f8 DG |
201 | if (ret < 0) { |
202 | PERROR("kernel consumer cmd_sock close"); | |
203 | } | |
204 | } | |
412d7227 SM |
205 | if (the_ustconsumer32_data.cmd_sock >= 0) { |
206 | ret = close(the_ustconsumer32_data.cmd_sock); | |
e975f9f8 | 207 | if (ret < 0) { |
a76cbd9f | 208 | PERROR("UST consumerd32 cmd_sock close"); |
e975f9f8 DG |
209 | } |
210 | } | |
412d7227 SM |
211 | if (the_ustconsumer64_data.cmd_sock >= 0) { |
212 | ret = close(the_ustconsumer64_data.cmd_sock); | |
e975f9f8 | 213 | if (ret < 0) { |
a76cbd9f | 214 | PERROR("UST consumerd64 cmd_sock close"); |
e975f9f8 DG |
215 | } |
216 | } | |
412d7227 SM |
217 | if (the_kconsumer_data.channel_monitor_pipe >= 0) { |
218 | ret = close(the_kconsumer_data.channel_monitor_pipe); | |
b3530820 JG |
219 | if (ret < 0) { |
220 | PERROR("kernel consumer channel monitor pipe close"); | |
221 | } | |
222 | } | |
412d7227 SM |
223 | if (the_ustconsumer32_data.channel_monitor_pipe >= 0) { |
224 | ret = close(the_ustconsumer32_data.channel_monitor_pipe); | |
b3530820 JG |
225 | if (ret < 0) { |
226 | PERROR("UST consumerd32 channel monitor pipe close"); | |
227 | } | |
228 | } | |
412d7227 SM |
229 | if (the_ustconsumer64_data.channel_monitor_pipe >= 0) { |
230 | ret = close(the_ustconsumer64_data.channel_monitor_pipe); | |
b3530820 JG |
231 | if (ret < 0) { |
232 | PERROR("UST consumerd64 channel monitor pipe close"); | |
233 | } | |
234 | } | |
e975f9f8 DG |
235 | } |
236 | ||
4e4714cb JR |
237 | /* |
238 | * Wait on consumer process termination. | |
239 | * | |
240 | * Need to be called with the consumer data lock held or from a context | |
241 | * ensuring no concurrent access to data (e.g: cleanup). | |
242 | */ | |
243 | static void wait_consumer(struct consumer_data *consumer_data) | |
244 | { | |
245 | pid_t ret; | |
246 | int status; | |
247 | ||
248 | if (consumer_data->pid <= 0) { | |
249 | return; | |
250 | } | |
251 | ||
252 | DBG("Waiting for complete teardown of consumerd (PID: %d)", | |
253 | consumer_data->pid); | |
254 | ret = waitpid(consumer_data->pid, &status, 0); | |
255 | if (ret == -1) { | |
256 | PERROR("consumerd waitpid pid: %d", consumer_data->pid) | |
1640c24c | 257 | } else if (!WIFEXITED(status)) { |
4e4714cb JR |
258 | ERR("consumerd termination with error: %d", |
259 | WEXITSTATUS(ret)); | |
260 | } | |
261 | consumer_data->pid = 0; | |
262 | } | |
263 | ||
fac6795d | 264 | /* |
4a15001e | 265 | * Cleanup the session daemon's data structures. |
fac6795d | 266 | */ |
4a15001e | 267 | static void sessiond_cleanup(void) |
fac6795d | 268 | { |
ef599319 | 269 | int ret; |
e32d7f27 | 270 | struct ltt_session_list *session_list = session_get_list(); |
fac6795d | 271 | |
4a15001e | 272 | DBG("Cleanup sessiond"); |
e07ae692 | 273 | |
4e449f3f MD |
274 | /* |
275 | * Close the thread quit pipe. It has already done its job, | |
276 | * since we are now called. | |
277 | */ | |
a7333da7 | 278 | sessiond_close_quit_pipe(); |
971a61c6 JG |
279 | utils_close_pipe(apps_cmd_pipe); |
280 | utils_close_pipe(apps_cmd_notify_pipe); | |
412d7227 | 281 | utils_close_pipe(the_kernel_poll_pipe); |
2f77fc4b | 282 | |
412d7227 | 283 | ret = remove(the_config.pid_file_path.value); |
c9a2957d | 284 | if (ret < 0) { |
412d7227 | 285 | PERROR("remove pidfile %s", the_config.pid_file_path.value); |
35f90c40 DG |
286 | } |
287 | ||
e6142f2e | 288 | DBG("Removing sessiond and consumerd content of directory %s", |
412d7227 | 289 | the_config.rundir.value); |
8c6c56c2 MD |
290 | |
291 | /* sessiond */ | |
412d7227 SM |
292 | DBG("Removing %s", the_config.pid_file_path.value); |
293 | (void) unlink(the_config.pid_file_path.value); | |
8c6c56c2 | 294 | |
412d7227 SM |
295 | DBG("Removing %s", the_config.agent_port_file_path.value); |
296 | (void) unlink(the_config.agent_port_file_path.value); | |
cd9290dd | 297 | |
8c6c56c2 | 298 | /* kconsumerd */ |
412d7227 SM |
299 | DBG("Removing %s", the_kconsumer_data.err_unix_sock_path); |
300 | (void) unlink(the_kconsumer_data.err_unix_sock_path); | |
e6142f2e | 301 | |
412d7227 SM |
302 | DBG("Removing directory %s", the_config.kconsumerd_path.value); |
303 | (void) rmdir(the_config.kconsumerd_path.value); | |
8c6c56c2 MD |
304 | |
305 | /* ust consumerd 32 */ | |
412d7227 SM |
306 | DBG("Removing %s", the_config.consumerd32_err_unix_sock_path.value); |
307 | (void) unlink(the_config.consumerd32_err_unix_sock_path.value); | |
e6142f2e | 308 | |
412d7227 SM |
309 | DBG("Removing directory %s", the_config.consumerd32_path.value); |
310 | (void) rmdir(the_config.consumerd32_path.value); | |
8c6c56c2 MD |
311 | |
312 | /* ust consumerd 64 */ | |
412d7227 SM |
313 | DBG("Removing %s", the_config.consumerd64_err_unix_sock_path.value); |
314 | (void) unlink(the_config.consumerd64_err_unix_sock_path.value); | |
e6142f2e | 315 | |
412d7227 SM |
316 | DBG("Removing directory %s", the_config.consumerd64_path.value); |
317 | (void) rmdir(the_config.consumerd64_path.value); | |
5461b305 | 318 | |
99d688f2 | 319 | pthread_mutex_destroy(&session_list->lock); |
273ea72c | 320 | |
44760c20 JR |
321 | DBG("Cleaning up all per-event notifier domain agents"); |
322 | agent_by_event_notifier_domain_ht_destroy(); | |
323 | ||
6a4e4039 JG |
324 | DBG("Cleaning up all agent apps"); |
325 | agent_app_ht_clean(); | |
099e26bd | 326 | DBG("Closing all UST sockets"); |
56fff090 | 327 | ust_app_clean_list(); |
7972aab2 | 328 | buffer_reg_destroy_registries(); |
099e26bd | 329 | |
0787fc4b MD |
330 | close_consumer_sockets(); |
331 | ||
412d7227 SM |
332 | wait_consumer(&the_kconsumer_data); |
333 | wait_consumer(&the_ustconsumer64_data); | |
334 | wait_consumer(&the_ustconsumer32_data); | |
0787fc4b | 335 | |
412d7227 | 336 | if (is_root && !the_config.no_kernel) { |
7d268848 | 337 | cleanup_kernel_tracer(); |
2f50c8a3 | 338 | } |
2f77fc4b | 339 | |
c9cb3e7d JG |
340 | /* |
341 | * We do NOT rmdir rundir because there are other processes | |
342 | * using it, for instance lttng-relayd, which can start in | |
343 | * parallel with this teardown. | |
344 | */ | |
4a15001e MD |
345 | } |
346 | ||
347 | /* | |
348 | * Cleanup the daemon's option data structures. | |
349 | */ | |
350 | static void sessiond_cleanup_options(void) | |
351 | { | |
352 | DBG("Cleaning up options"); | |
353 | ||
412d7227 | 354 | sessiond_config_fini(&the_config); |
c9cb3e7d | 355 | |
7567352f | 356 | run_as_destroy_worker(); |
fac6795d DG |
357 | } |
358 | ||
917a718d | 359 | static int string_match(const char *str1, const char *str2) |
54d01ffb | 360 | { |
917a718d | 361 | return (str1 && str2) && !strcmp(str1, str2); |
54d01ffb DG |
362 | } |
363 | ||
00e2e675 | 364 | /* |
917a718d JG |
365 | * Take an option from the getopt output and set it in the right variable to be |
366 | * used later. | |
36b588ed | 367 | * |
917a718d | 368 | * Return 0 on success else a negative value. |
00e2e675 | 369 | */ |
917a718d | 370 | static int set_option(int opt, const char *arg, const char *optname) |
00e2e675 | 371 | { |
917a718d | 372 | int ret = 0; |
fac6795d | 373 | |
c0232ea5 | 374 | if (string_match(optname, "client-sock") || opt == 'c') { |
66b2ce8e JG |
375 | if (!arg || *arg == '\0') { |
376 | ret = -EINVAL; | |
377 | goto end; | |
378 | } | |
e8fa9fb0 MD |
379 | if (lttng_is_setuid_setgid()) { |
380 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
381 | "-c, --client-sock"); | |
382 | } else { | |
412d7227 | 383 | config_string_set(&the_config.client_unix_sock_path, |
e6142f2e | 384 | strdup(arg)); |
412d7227 | 385 | if (!the_config.client_unix_sock_path.value) { |
e6142f2e JG |
386 | ret = -ENOMEM; |
387 | PERROR("strdup"); | |
388 | } | |
e8fa9fb0 | 389 | } |
c0232ea5 | 390 | } else if (string_match(optname, "apps-sock") || opt == 'a') { |
66b2ce8e JG |
391 | if (!arg || *arg == '\0') { |
392 | ret = -EINVAL; | |
393 | goto end; | |
394 | } | |
e8fa9fb0 MD |
395 | if (lttng_is_setuid_setgid()) { |
396 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
397 | "-a, --apps-sock"); | |
398 | } else { | |
412d7227 | 399 | config_string_set(&the_config.apps_unix_sock_path, |
e6142f2e | 400 | strdup(arg)); |
412d7227 | 401 | if (!the_config.apps_unix_sock_path.value) { |
e6142f2e JG |
402 | ret = -ENOMEM; |
403 | PERROR("strdup"); | |
404 | } | |
e8fa9fb0 | 405 | } |
c0232ea5 | 406 | } else if (string_match(optname, "daemonize") || opt == 'd') { |
412d7227 | 407 | the_config.daemonize = true; |
c0232ea5 | 408 | } else if (string_match(optname, "background") || opt == 'b') { |
412d7227 | 409 | the_config.background = true; |
c0232ea5 | 410 | } else if (string_match(optname, "group") || opt == 'g') { |
66b2ce8e JG |
411 | if (!arg || *arg == '\0') { |
412 | ret = -EINVAL; | |
413 | goto end; | |
414 | } | |
e8fa9fb0 MD |
415 | if (lttng_is_setuid_setgid()) { |
416 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
417 | "-g, --group"); | |
418 | } else { | |
412d7227 | 419 | config_string_set(&the_config.tracing_group_name, |
e6142f2e | 420 | strdup(arg)); |
412d7227 | 421 | if (!the_config.tracing_group_name.value) { |
e8fa9fb0 | 422 | ret = -ENOMEM; |
e6142f2e | 423 | PERROR("strdup"); |
e8fa9fb0 | 424 | } |
db322c4d | 425 | } |
c0232ea5 | 426 | } else if (string_match(optname, "help") || opt == 'h') { |
4fc83d94 | 427 | ret = utils_show_help(8, "lttng-sessiond", help_msg); |
8190767e | 428 | if (ret) { |
4fc83d94 | 429 | ERR("Cannot show --help for `lttng-sessiond`"); |
8190767e PP |
430 | perror("exec"); |
431 | } | |
432 | exit(ret ? EXIT_FAILURE : EXIT_SUCCESS); | |
c0232ea5 | 433 | } else if (string_match(optname, "version") || opt == 'V') { |
a3bc3918 | 434 | opt_print_version = 1; |
c0232ea5 | 435 | } else if (string_match(optname, "sig-parent") || opt == 'S') { |
412d7227 | 436 | the_config.sig_parent = true; |
c0232ea5 | 437 | } else if (string_match(optname, "kconsumerd-err-sock")) { |
66b2ce8e JG |
438 | if (!arg || *arg == '\0') { |
439 | ret = -EINVAL; | |
440 | goto end; | |
441 | } | |
e8fa9fb0 MD |
442 | if (lttng_is_setuid_setgid()) { |
443 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
444 | "--kconsumerd-err-sock"); | |
445 | } else { | |
412d7227 SM |
446 | config_string_set( |
447 | &the_config.kconsumerd_err_unix_sock_path, | |
e6142f2e | 448 | strdup(arg)); |
412d7227 | 449 | if (!the_config.kconsumerd_err_unix_sock_path.value) { |
e6142f2e JG |
450 | ret = -ENOMEM; |
451 | PERROR("strdup"); | |
452 | } | |
e8fa9fb0 | 453 | } |
c0232ea5 | 454 | } else if (string_match(optname, "kconsumerd-cmd-sock")) { |
66b2ce8e JG |
455 | if (!arg || *arg == '\0') { |
456 | ret = -EINVAL; | |
457 | goto end; | |
458 | } | |
e8fa9fb0 MD |
459 | if (lttng_is_setuid_setgid()) { |
460 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
461 | "--kconsumerd-cmd-sock"); | |
462 | } else { | |
412d7227 SM |
463 | config_string_set( |
464 | &the_config.kconsumerd_cmd_unix_sock_path, | |
e6142f2e | 465 | strdup(arg)); |
412d7227 | 466 | if (!the_config.kconsumerd_cmd_unix_sock_path.value) { |
e6142f2e JG |
467 | ret = -ENOMEM; |
468 | PERROR("strdup"); | |
469 | } | |
e8fa9fb0 | 470 | } |
c0232ea5 | 471 | } else if (string_match(optname, "ustconsumerd64-err-sock")) { |
66b2ce8e JG |
472 | if (!arg || *arg == '\0') { |
473 | ret = -EINVAL; | |
474 | goto end; | |
475 | } | |
e8fa9fb0 MD |
476 | if (lttng_is_setuid_setgid()) { |
477 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
478 | "--ustconsumerd64-err-sock"); | |
479 | } else { | |
412d7227 SM |
480 | config_string_set( |
481 | &the_config.consumerd64_err_unix_sock_path, | |
e6142f2e | 482 | strdup(arg)); |
412d7227 | 483 | if (!the_config.consumerd64_err_unix_sock_path.value) { |
e6142f2e JG |
484 | ret = -ENOMEM; |
485 | PERROR("strdup"); | |
486 | } | |
e8fa9fb0 | 487 | } |
c0232ea5 | 488 | } else if (string_match(optname, "ustconsumerd64-cmd-sock")) { |
66b2ce8e JG |
489 | if (!arg || *arg == '\0') { |
490 | ret = -EINVAL; | |
491 | goto end; | |
492 | } | |
e8fa9fb0 MD |
493 | if (lttng_is_setuid_setgid()) { |
494 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
495 | "--ustconsumerd64-cmd-sock"); | |
496 | } else { | |
412d7227 SM |
497 | config_string_set( |
498 | &the_config.consumerd64_cmd_unix_sock_path, | |
e6142f2e | 499 | strdup(arg)); |
412d7227 | 500 | if (!the_config.consumerd64_cmd_unix_sock_path.value) { |
e6142f2e JG |
501 | ret = -ENOMEM; |
502 | PERROR("strdup"); | |
503 | } | |
e8fa9fb0 | 504 | } |
c0232ea5 | 505 | } else if (string_match(optname, "ustconsumerd32-err-sock")) { |
66b2ce8e JG |
506 | if (!arg || *arg == '\0') { |
507 | ret = -EINVAL; | |
508 | goto end; | |
509 | } | |
e8fa9fb0 MD |
510 | if (lttng_is_setuid_setgid()) { |
511 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
512 | "--ustconsumerd32-err-sock"); | |
513 | } else { | |
412d7227 SM |
514 | config_string_set( |
515 | &the_config.consumerd32_err_unix_sock_path, | |
e6142f2e | 516 | strdup(arg)); |
412d7227 | 517 | if (!the_config.consumerd32_err_unix_sock_path.value) { |
e6142f2e JG |
518 | ret = -ENOMEM; |
519 | PERROR("strdup"); | |
520 | } | |
e8fa9fb0 | 521 | } |
c0232ea5 | 522 | } else if (string_match(optname, "ustconsumerd32-cmd-sock")) { |
66b2ce8e JG |
523 | if (!arg || *arg == '\0') { |
524 | ret = -EINVAL; | |
525 | goto end; | |
526 | } | |
e8fa9fb0 MD |
527 | if (lttng_is_setuid_setgid()) { |
528 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
529 | "--ustconsumerd32-cmd-sock"); | |
530 | } else { | |
412d7227 SM |
531 | config_string_set( |
532 | &the_config.consumerd32_cmd_unix_sock_path, | |
e6142f2e | 533 | strdup(arg)); |
412d7227 | 534 | if (!the_config.consumerd32_cmd_unix_sock_path.value) { |
e6142f2e JG |
535 | ret = -ENOMEM; |
536 | PERROR("strdup"); | |
537 | } | |
e8fa9fb0 | 538 | } |
c0232ea5 | 539 | } else if (string_match(optname, "no-kernel")) { |
412d7227 | 540 | the_config.no_kernel = true; |
c0232ea5 | 541 | } else if (string_match(optname, "quiet") || opt == 'q') { |
412d7227 | 542 | the_config.quiet = true; |
c0232ea5 | 543 | } else if (string_match(optname, "verbose") || opt == 'v') { |
26296c48 JG |
544 | /* Verbose level can increase using multiple -v */ |
545 | if (arg) { | |
13755a18 | 546 | /* Value obtained from config file */ |
412d7227 | 547 | the_config.verbose = config_parse_value(arg); |
26296c48 | 548 | } else { |
13755a18 | 549 | /* -v used on command line */ |
412d7227 | 550 | the_config.verbose++; |
26296c48 | 551 | } |
13755a18 | 552 | /* Clamp value to [0, 3] */ |
412d7227 SM |
553 | the_config.verbose = the_config.verbose < 0 ? |
554 | 0 : | |
555 | (the_config.verbose <= 3 ? the_config.verbose : | |
556 | 3); | |
c0232ea5 | 557 | } else if (string_match(optname, "verbose-consumer")) { |
26296c48 | 558 | if (arg) { |
412d7227 | 559 | the_config.verbose_consumer = config_parse_value(arg); |
26296c48 | 560 | } else { |
412d7227 | 561 | the_config.verbose_consumer++; |
26296c48 | 562 | } |
c0232ea5 | 563 | } else if (string_match(optname, "consumerd32-path")) { |
66b2ce8e JG |
564 | if (!arg || *arg == '\0') { |
565 | ret = -EINVAL; | |
566 | goto end; | |
567 | } | |
e8fa9fb0 MD |
568 | if (lttng_is_setuid_setgid()) { |
569 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
570 | "--consumerd32-path"); | |
571 | } else { | |
412d7227 | 572 | config_string_set(&the_config.consumerd32_bin_path, |
e6142f2e | 573 | strdup(arg)); |
412d7227 | 574 | if (!the_config.consumerd32_bin_path.value) { |
e8fa9fb0 MD |
575 | PERROR("strdup"); |
576 | ret = -ENOMEM; | |
577 | } | |
db322c4d | 578 | } |
c0232ea5 | 579 | } else if (string_match(optname, "consumerd32-libdir")) { |
66b2ce8e JG |
580 | if (!arg || *arg == '\0') { |
581 | ret = -EINVAL; | |
582 | goto end; | |
583 | } | |
e8fa9fb0 MD |
584 | if (lttng_is_setuid_setgid()) { |
585 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
586 | "--consumerd32-libdir"); | |
587 | } else { | |
412d7227 | 588 | config_string_set(&the_config.consumerd32_lib_dir, |
e6142f2e | 589 | strdup(arg)); |
412d7227 | 590 | if (!the_config.consumerd32_lib_dir.value) { |
e8fa9fb0 MD |
591 | PERROR("strdup"); |
592 | ret = -ENOMEM; | |
593 | } | |
db322c4d | 594 | } |
c0232ea5 | 595 | } else if (string_match(optname, "consumerd64-path")) { |
66b2ce8e JG |
596 | if (!arg || *arg == '\0') { |
597 | ret = -EINVAL; | |
598 | goto end; | |
599 | } | |
e8fa9fb0 MD |
600 | if (lttng_is_setuid_setgid()) { |
601 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
602 | "--consumerd64-path"); | |
603 | } else { | |
412d7227 | 604 | config_string_set(&the_config.consumerd64_bin_path, |
e6142f2e | 605 | strdup(arg)); |
412d7227 | 606 | if (!the_config.consumerd64_bin_path.value) { |
e8fa9fb0 MD |
607 | PERROR("strdup"); |
608 | ret = -ENOMEM; | |
609 | } | |
db322c4d | 610 | } |
c0232ea5 | 611 | } else if (string_match(optname, "consumerd64-libdir")) { |
66b2ce8e JG |
612 | if (!arg || *arg == '\0') { |
613 | ret = -EINVAL; | |
614 | goto end; | |
615 | } | |
e8fa9fb0 MD |
616 | if (lttng_is_setuid_setgid()) { |
617 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
618 | "--consumerd64-libdir"); | |
619 | } else { | |
412d7227 | 620 | config_string_set(&the_config.consumerd64_lib_dir, |
e6142f2e | 621 | strdup(arg)); |
412d7227 | 622 | if (!the_config.consumerd64_lib_dir.value) { |
e8fa9fb0 MD |
623 | PERROR("strdup"); |
624 | ret = -ENOMEM; | |
625 | } | |
db322c4d | 626 | } |
c0232ea5 | 627 | } else if (string_match(optname, "pidfile") || opt == 'p') { |
66b2ce8e JG |
628 | if (!arg || *arg == '\0') { |
629 | ret = -EINVAL; | |
630 | goto end; | |
631 | } | |
e8fa9fb0 MD |
632 | if (lttng_is_setuid_setgid()) { |
633 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
634 | "-p, --pidfile"); | |
635 | } else { | |
412d7227 SM |
636 | config_string_set( |
637 | &the_config.pid_file_path, strdup(arg)); | |
638 | if (!the_config.pid_file_path.value) { | |
e8fa9fb0 MD |
639 | PERROR("strdup"); |
640 | ret = -ENOMEM; | |
641 | } | |
db322c4d | 642 | } |
c0232ea5 | 643 | } else if (string_match(optname, "agent-tcp-port")) { |
66b2ce8e JG |
644 | if (!arg || *arg == '\0') { |
645 | ret = -EINVAL; | |
646 | goto end; | |
647 | } | |
e8fa9fb0 MD |
648 | if (lttng_is_setuid_setgid()) { |
649 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
650 | "--agent-tcp-port"); | |
651 | } else { | |
652 | unsigned long v; | |
4d076222 | 653 | |
e8fa9fb0 MD |
654 | errno = 0; |
655 | v = strtoul(arg, NULL, 0); | |
656 | if (errno != 0 || !isdigit(arg[0])) { | |
657 | ERR("Wrong value in --agent-tcp-port parameter: %s", arg); | |
658 | return -1; | |
659 | } | |
660 | if (v == 0 || v >= 65535) { | |
661 | ERR("Port overflow in --agent-tcp-port parameter: %s", arg); | |
662 | return -1; | |
663 | } | |
412d7227 SM |
664 | the_config.agent_tcp_port.begin = |
665 | the_config.agent_tcp_port.end = (int) v; | |
2288467f | 666 | DBG3("Agent TCP port set to non default: %i", (int) v); |
26296c48 | 667 | } |
c0232ea5 | 668 | } else if (string_match(optname, "load") || opt == 'l') { |
66b2ce8e JG |
669 | if (!arg || *arg == '\0') { |
670 | ret = -EINVAL; | |
671 | goto end; | |
672 | } | |
e8fa9fb0 MD |
673 | if (lttng_is_setuid_setgid()) { |
674 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
675 | "-l, --load"); | |
676 | } else { | |
412d7227 SM |
677 | config_string_set(&the_config.load_session_path, |
678 | strdup(arg)); | |
679 | if (!the_config.load_session_path.value) { | |
e8fa9fb0 MD |
680 | PERROR("strdup"); |
681 | ret = -ENOMEM; | |
682 | } | |
ef367a93 | 683 | } |
c0232ea5 | 684 | } else if (string_match(optname, "kmod-probes")) { |
66b2ce8e JG |
685 | if (!arg || *arg == '\0') { |
686 | ret = -EINVAL; | |
687 | goto end; | |
688 | } | |
e8fa9fb0 MD |
689 | if (lttng_is_setuid_setgid()) { |
690 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
691 | "--kmod-probes"); | |
692 | } else { | |
412d7227 SM |
693 | config_string_set(&the_config.kmod_probes_list, |
694 | strdup(arg)); | |
695 | if (!the_config.kmod_probes_list.value) { | |
e8fa9fb0 MD |
696 | PERROR("strdup"); |
697 | ret = -ENOMEM; | |
698 | } | |
c9d42407 | 699 | } |
c0232ea5 | 700 | } else if (string_match(optname, "extra-kmod-probes")) { |
66b2ce8e JG |
701 | if (!arg || *arg == '\0') { |
702 | ret = -EINVAL; | |
703 | goto end; | |
704 | } | |
e8fa9fb0 MD |
705 | if (lttng_is_setuid_setgid()) { |
706 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
707 | "--extra-kmod-probes"); | |
708 | } else { | |
412d7227 | 709 | config_string_set(&the_config.kmod_extra_probes_list, |
e6142f2e | 710 | strdup(arg)); |
412d7227 | 711 | if (!the_config.kmod_extra_probes_list.value) { |
e8fa9fb0 MD |
712 | PERROR("strdup"); |
713 | ret = -ENOMEM; | |
714 | } | |
db322c4d | 715 | } |
90aa04a1 FD |
716 | } else if (string_match(optname, "event-notifier-error-number-of-bucket")) { |
717 | unsigned long v; | |
718 | ||
719 | errno = 0; | |
720 | v = strtoul(arg, NULL, 0); | |
721 | if (errno != 0 || !isdigit(arg[0])) { | |
722 | ERR("Wrong value in --event-notifier-error-number-of-bucket parameter: %s", arg); | |
723 | return -1; | |
724 | } | |
725 | if (v == 0 || v >= EVENT_NOTIFIER_ERROR_COUNTER_NUMBER_OF_BUCKET_MAX) { | |
726 | ERR("Value out of range for --event-notifier-error-number-of-bucket parameter: %s", arg); | |
727 | return -1; | |
728 | } | |
412d7227 | 729 | the_config.event_notifier_error_counter_bucket = (int) v; |
90aa04a1 | 730 | DBG3("Number of event notifier error counter set to non default: %i", |
412d7227 | 731 | the_config.event_notifier_error_counter_bucket); |
90aa04a1 | 732 | goto end; |
c0232ea5 JG |
733 | } else if (string_match(optname, "config") || opt == 'f') { |
734 | /* This is handled in set_options() thus silent skip. */ | |
735 | goto end; | |
736 | } else { | |
26296c48 JG |
737 | /* Unknown option or other error. |
738 | * Error is printed by getopt, just return */ | |
739 | ret = -1; | |
740 | } | |
741 | ||
f3dd7ce7 | 742 | end: |
c5d350b2 JG |
743 | if (ret == -EINVAL) { |
744 | const char *opt_name = "unknown"; | |
745 | int i; | |
746 | ||
747 | for (i = 0; i < sizeof(long_options) / sizeof(struct option); | |
748 | i++) { | |
749 | if (opt == long_options[i].val) { | |
750 | opt_name = long_options[i].name; | |
751 | break; | |
752 | } | |
753 | } | |
754 | ||
755 | WARN("Invalid argument provided for option \"%s\", using default value.", | |
756 | opt_name); | |
757 | } | |
f3dd7ce7 | 758 | |
26296c48 JG |
759 | return ret; |
760 | } | |
761 | ||
762 | /* | |
763 | * config_entry_handler_cb used to handle options read from a config file. | |
f40ef1d5 | 764 | * See config_entry_handler_cb comment in common/config/session-config.h for the |
26296c48 JG |
765 | * return value conventions. |
766 | */ | |
767 | static int config_entry_handler(const struct config_entry *entry, void *unused) | |
768 | { | |
769 | int ret = 0, i; | |
770 | ||
771 | if (!entry || !entry->name || !entry->value) { | |
772 | ret = -EINVAL; | |
773 | goto end; | |
774 | } | |
775 | ||
776 | /* Check if the option is to be ignored */ | |
777 | for (i = 0; i < sizeof(config_ignore_options) / sizeof(char *); i++) { | |
778 | if (!strcmp(entry->name, config_ignore_options[i])) { | |
779 | goto end; | |
780 | } | |
781 | } | |
782 | ||
783 | for (i = 0; i < (sizeof(long_options) / sizeof(struct option)) - 1; | |
784 | i++) { | |
785 | ||
786 | /* Ignore if not fully matched. */ | |
787 | if (strcmp(entry->name, long_options[i].name)) { | |
788 | continue; | |
789 | } | |
790 | ||
791 | /* | |
792 | * If the option takes no argument on the command line, we have to | |
793 | * check if the value is "true". We support non-zero numeric values, | |
794 | * true, on and yes. | |
795 | */ | |
796 | if (!long_options[i].has_arg) { | |
797 | ret = config_parse_value(entry->value); | |
798 | if (ret <= 0) { | |
799 | if (ret) { | |
800 | WARN("Invalid configuration value \"%s\" for option %s", | |
801 | entry->value, entry->name); | |
802 | } | |
803 | /* False, skip boolean config option. */ | |
804 | goto end; | |
4d076222 | 805 | } |
26296c48 JG |
806 | } |
807 | ||
808 | ret = set_option(long_options[i].val, entry->value, entry->name); | |
809 | goto end; | |
810 | } | |
811 | ||
812 | WARN("Unrecognized option \"%s\" in daemon configuration file.", entry->name); | |
813 | ||
814 | end: | |
815 | return ret; | |
816 | } | |
817 | ||
a3bc3918 JR |
818 | static void print_version(void) { |
819 | fprintf(stdout, "%s\n", VERSION); | |
820 | } | |
821 | ||
26296c48 JG |
822 | /* |
823 | * daemon configuration loading and argument parsing | |
824 | */ | |
825 | static int set_options(int argc, char **argv) | |
826 | { | |
827 | int ret = 0, c = 0, option_index = 0; | |
828 | int orig_optopt = optopt, orig_optind = optind; | |
829 | char *optstring; | |
830 | const char *config_path = NULL; | |
831 | ||
832 | optstring = utils_generate_optstring(long_options, | |
833 | sizeof(long_options) / sizeof(struct option)); | |
834 | if (!optstring) { | |
835 | ret = -ENOMEM; | |
836 | goto end; | |
837 | } | |
838 | ||
839 | /* Check for the --config option */ | |
840 | while ((c = getopt_long(argc, argv, optstring, long_options, | |
841 | &option_index)) != -1) { | |
842 | if (c == '?') { | |
843 | ret = -EINVAL; | |
844 | goto end; | |
845 | } else if (c != 'f') { | |
846 | /* if not equal to --config option. */ | |
847 | continue; | |
848 | } | |
849 | ||
e8fa9fb0 MD |
850 | if (lttng_is_setuid_setgid()) { |
851 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
852 | "-f, --config"); | |
853 | } else { | |
854 | config_path = utils_expand_path(optarg); | |
855 | if (!config_path) { | |
856 | ERR("Failed to resolve path: %s", optarg); | |
857 | } | |
26296c48 JG |
858 | } |
859 | } | |
860 | ||
861 | ret = config_get_section_entries(config_path, config_section_name, | |
862 | config_entry_handler, NULL); | |
863 | if (ret) { | |
864 | if (ret > 0) { | |
865 | ERR("Invalid configuration option at line %i", ret); | |
866 | ret = -1; | |
867 | } | |
868 | goto end; | |
869 | } | |
870 | ||
871 | /* Reset getopt's global state */ | |
872 | optopt = orig_optopt; | |
873 | optind = orig_optind; | |
874 | while (1) { | |
c0232ea5 JG |
875 | option_index = -1; |
876 | /* | |
877 | * getopt_long() will not set option_index if it encounters a | |
878 | * short option. | |
879 | */ | |
880 | c = getopt_long(argc, argv, optstring, long_options, | |
881 | &option_index); | |
26296c48 | 882 | if (c == -1) { |
4d076222 DG |
883 | break; |
884 | } | |
26296c48 | 885 | |
c0232ea5 JG |
886 | /* |
887 | * Pass NULL as the long option name if popt left the index | |
888 | * unset. | |
889 | */ | |
890 | ret = set_option(c, optarg, | |
891 | option_index < 0 ? NULL : | |
892 | long_options[option_index].name); | |
26296c48 JG |
893 | if (ret < 0) { |
894 | break; | |
fac6795d DG |
895 | } |
896 | } | |
897 | ||
26296c48 JG |
898 | end: |
899 | free(optstring); | |
900 | return ret; | |
fac6795d DG |
901 | } |
902 | ||
f472090a JG |
903 | /* |
904 | * Create lockfile using the rundir and return its fd. | |
905 | */ | |
906 | static int create_lockfile(void) | |
907 | { | |
412d7227 | 908 | return utils_create_lock_file(the_config.lock_file_path.value); |
f472090a JG |
909 | } |
910 | ||
fac6795d | 911 | /* |
54d01ffb DG |
912 | * Check if the global socket is available, and if a daemon is answering at the |
913 | * other side. If yes, error is returned. | |
f472090a JG |
914 | * |
915 | * Also attempts to create and hold the lock file. | |
fac6795d | 916 | */ |
cf3af59e | 917 | static int check_existing_daemon(void) |
fac6795d | 918 | { |
f472090a JG |
919 | int ret = 0; |
920 | ||
7d8234d9 | 921 | /* Is there anybody out there ? */ |
099e26bd | 922 | if (lttng_session_daemon_alive()) { |
f472090a JG |
923 | ret = -EEXIST; |
924 | goto end; | |
099e26bd | 925 | } |
b09c7c76 | 926 | |
f472090a JG |
927 | lockfile_fd = create_lockfile(); |
928 | if (lockfile_fd < 0) { | |
929 | ret = -EEXIST; | |
930 | goto end; | |
931 | } | |
932 | end: | |
933 | return ret; | |
934 | } | |
935 | ||
936 | static void sessiond_cleanup_lock_file(void) | |
937 | { | |
938 | int ret; | |
939 | ||
940 | /* | |
941 | * Cleanup lock file by deleting it and finaly closing it which will | |
942 | * release the file system lock. | |
943 | */ | |
944 | if (lockfile_fd >= 0) { | |
412d7227 | 945 | ret = remove(the_config.lock_file_path.value); |
f472090a JG |
946 | if (ret < 0) { |
947 | PERROR("remove lock file"); | |
948 | } | |
949 | ret = close(lockfile_fd); | |
950 | if (ret < 0) { | |
951 | PERROR("close lock file"); | |
952 | } | |
953 | } | |
fac6795d DG |
954 | } |
955 | ||
fac6795d | 956 | /* |
d063d709 | 957 | * Set the tracing group gid onto the client socket. |
5e16da05 | 958 | * |
d063d709 | 959 | * Race window between mkdir and chown is OK because we are going from more |
d1613cf5 | 960 | * permissive (root.root) to less permissive (root.tracing). |
fac6795d | 961 | */ |
be040666 | 962 | static int set_permissions(char *rundir) |
fac6795d DG |
963 | { |
964 | int ret; | |
996b65c8 | 965 | gid_t gid; |
fac6795d | 966 | |
412d7227 SM |
967 | ret = utils_get_group_id( |
968 | the_config.tracing_group_name.value, true, &gid); | |
28ab59d0 JR |
969 | if (ret) { |
970 | /* Default to root group. */ | |
971 | gid = 0; | |
972 | } | |
fac6795d | 973 | |
d6f42150 | 974 | /* Set lttng run dir */ |
be040666 | 975 | ret = chown(rundir, 0, gid); |
d6f42150 | 976 | if (ret < 0) { |
be040666 | 977 | ERR("Unable to set group on %s", rundir); |
76d7553f | 978 | PERROR("chown"); |
d6f42150 DG |
979 | } |
980 | ||
6c71277b MD |
981 | /* |
982 | * Ensure all applications and tracing group can search the run | |
983 | * dir. Allow everyone to read the directory, since it does not | |
984 | * buy us anything to hide its content. | |
985 | */ | |
986 | ret = chmod(rundir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); | |
d1613cf5 JN |
987 | if (ret < 0) { |
988 | ERR("Unable to set permissions on %s", rundir); | |
76d7553f | 989 | PERROR("chmod"); |
d1613cf5 JN |
990 | } |
991 | ||
d6f42150 | 992 | /* lttng client socket path */ |
412d7227 | 993 | ret = chown(the_config.client_unix_sock_path.value, 0, gid); |
fac6795d | 994 | if (ret < 0) { |
412d7227 SM |
995 | ERR("Unable to set group on %s", |
996 | the_config.client_unix_sock_path.value); | |
76d7553f | 997 | PERROR("chown"); |
d6f42150 DG |
998 | } |
999 | ||
3bd1e081 | 1000 | /* kconsumer error socket path */ |
412d7227 | 1001 | ret = chown(the_kconsumer_data.err_unix_sock_path, 0, 0); |
d6f42150 | 1002 | if (ret < 0) { |
412d7227 SM |
1003 | ERR("Unable to set group on %s", |
1004 | the_kconsumer_data.err_unix_sock_path); | |
76d7553f | 1005 | PERROR("chown"); |
3bd1e081 MD |
1006 | } |
1007 | ||
7753dea8 | 1008 | /* 64-bit ustconsumer error socket path */ |
412d7227 | 1009 | ret = chown(the_ustconsumer64_data.err_unix_sock_path, 0, 0); |
7753dea8 | 1010 | if (ret < 0) { |
412d7227 SM |
1011 | ERR("Unable to set group on %s", |
1012 | the_ustconsumer64_data.err_unix_sock_path); | |
76d7553f | 1013 | PERROR("chown"); |
7753dea8 MD |
1014 | } |
1015 | ||
1016 | /* 32-bit ustconsumer compat32 error socket path */ | |
412d7227 | 1017 | ret = chown(the_ustconsumer32_data.err_unix_sock_path, 0, 0); |
3bd1e081 | 1018 | if (ret < 0) { |
412d7227 SM |
1019 | ERR("Unable to set group on %s", |
1020 | the_ustconsumer32_data.err_unix_sock_path); | |
76d7553f | 1021 | PERROR("chown"); |
fac6795d DG |
1022 | } |
1023 | ||
d6f42150 | 1024 | DBG("All permissions are set"); |
e07ae692 | 1025 | |
fac6795d DG |
1026 | return ret; |
1027 | } | |
1028 | ||
d6f42150 | 1029 | /* |
d063d709 | 1030 | * Create the lttng run directory needed for all global sockets and pipe. |
d6f42150 | 1031 | */ |
e6142f2e | 1032 | static int create_lttng_rundir(void) |
d6f42150 DG |
1033 | { |
1034 | int ret; | |
1035 | ||
412d7227 | 1036 | DBG3("Creating LTTng run directory: %s", the_config.rundir.value); |
67e40797 | 1037 | |
412d7227 | 1038 | ret = mkdir(the_config.rundir.value, S_IRWXU); |
d6f42150 | 1039 | if (ret < 0) { |
b1f11e69 | 1040 | if (errno != EEXIST) { |
412d7227 | 1041 | ERR("Unable to create %s", the_config.rundir.value); |
b1f11e69 DG |
1042 | goto error; |
1043 | } else { | |
1044 | ret = 0; | |
1045 | } | |
d6f42150 DG |
1046 | } |
1047 | ||
1048 | error: | |
1049 | return ret; | |
1050 | } | |
1051 | ||
1052 | /* | |
e6142f2e | 1053 | * Setup sockets and directory needed by the consumerds' communication with the |
d063d709 | 1054 | * session daemon. |
d6f42150 | 1055 | */ |
e6142f2e | 1056 | static int set_consumer_sockets(struct consumer_data *consumer_data) |
d6f42150 DG |
1057 | { |
1058 | int ret; | |
e6142f2e | 1059 | char *path = NULL; |
d6f42150 | 1060 | |
6c71277b | 1061 | switch (consumer_data->type) { |
7753dea8 | 1062 | case LTTNG_CONSUMER_KERNEL: |
412d7227 | 1063 | path = the_config.kconsumerd_path.value; |
7753dea8 MD |
1064 | break; |
1065 | case LTTNG_CONSUMER64_UST: | |
412d7227 | 1066 | path = the_config.consumerd64_path.value; |
7753dea8 MD |
1067 | break; |
1068 | case LTTNG_CONSUMER32_UST: | |
412d7227 | 1069 | path = the_config.consumerd32_path.value; |
7753dea8 MD |
1070 | break; |
1071 | default: | |
1072 | ERR("Consumer type unknown"); | |
1073 | ret = -EINVAL; | |
1074 | goto error; | |
d6f42150 | 1075 | } |
e6142f2e | 1076 | assert(path); |
d6f42150 | 1077 | |
67e40797 DG |
1078 | DBG2("Creating consumer directory: %s", path); |
1079 | ||
6c71277b | 1080 | ret = mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP); |
e7e1ef17 JR |
1081 | if (ret < 0 && errno != EEXIST) { |
1082 | PERROR("mkdir"); | |
1083 | ERR("Failed to create %s", path); | |
1084 | goto error; | |
d6f42150 | 1085 | } |
6c71277b | 1086 | if (is_root) { |
28ab59d0 JR |
1087 | gid_t gid; |
1088 | ||
412d7227 SM |
1089 | ret = utils_get_group_id(the_config.tracing_group_name.value, |
1090 | true, &gid); | |
28ab59d0 JR |
1091 | if (ret) { |
1092 | /* Default to root group. */ | |
1093 | gid = 0; | |
1094 | } | |
1095 | ||
1096 | ret = chown(path, 0, gid); | |
6c71277b MD |
1097 | if (ret < 0) { |
1098 | ERR("Unable to set group on %s", path); | |
1099 | PERROR("chown"); | |
1100 | goto error; | |
1101 | } | |
1102 | } | |
d6f42150 | 1103 | |
e6142f2e | 1104 | /* Create the consumerd error unix socket */ |
3bd1e081 MD |
1105 | consumer_data->err_sock = |
1106 | lttcomm_create_unix_sock(consumer_data->err_unix_sock_path); | |
1107 | if (consumer_data->err_sock < 0) { | |
1108 | ERR("Create unix sock failed: %s", consumer_data->err_unix_sock_path); | |
d6f42150 DG |
1109 | ret = -1; |
1110 | goto error; | |
1111 | } | |
1112 | ||
a24f05ab MD |
1113 | /* |
1114 | * Set the CLOEXEC flag. Return code is useless because either way, the | |
1115 | * show must go on. | |
1116 | */ | |
1117 | ret = utils_set_fd_cloexec(consumer_data->err_sock); | |
1118 | if (ret < 0) { | |
1119 | PERROR("utils_set_fd_cloexec"); | |
1120 | /* continue anyway */ | |
1121 | } | |
1122 | ||
d6f42150 | 1123 | /* File permission MUST be 660 */ |
3bd1e081 | 1124 | ret = chmod(consumer_data->err_unix_sock_path, |
54d01ffb | 1125 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); |
d6f42150 | 1126 | if (ret < 0) { |
3bd1e081 | 1127 | ERR("Set file permissions failed: %s", consumer_data->err_unix_sock_path); |
67e40797 | 1128 | PERROR("chmod"); |
d6f42150 DG |
1129 | goto error; |
1130 | } | |
1131 | ||
1132 | error: | |
1133 | return ret; | |
1134 | } | |
1135 | ||
fac6795d | 1136 | /* |
d063d709 | 1137 | * Signal handler for the daemon |
cf3af59e | 1138 | * |
54d01ffb DG |
1139 | * Simply stop all worker threads, leaving main() return gracefully after |
1140 | * joining all threads and calling cleanup(). | |
fac6795d DG |
1141 | */ |
1142 | static void sighandler(int sig) | |
1143 | { | |
1144 | switch (sig) { | |
cf3af59e | 1145 | case SIGINT: |
af87c45a | 1146 | DBG("SIGINT caught"); |
cf3af59e MD |
1147 | stop_threads(); |
1148 | break; | |
1149 | case SIGTERM: | |
af87c45a | 1150 | DBG("SIGTERM caught"); |
cf3af59e MD |
1151 | stop_threads(); |
1152 | break; | |
0bb7724a DG |
1153 | case SIGUSR1: |
1154 | CMM_STORE_SHARED(recv_child_signal, 1); | |
1155 | break; | |
cf3af59e MD |
1156 | default: |
1157 | break; | |
fac6795d | 1158 | } |
fac6795d DG |
1159 | } |
1160 | ||
1161 | /* | |
d063d709 | 1162 | * Setup signal handler for : |
1d4b027a | 1163 | * SIGINT, SIGTERM, SIGPIPE |
fac6795d | 1164 | */ |
1d4b027a | 1165 | static int set_signal_handler(void) |
fac6795d | 1166 | { |
1d4b027a DG |
1167 | int ret = 0; |
1168 | struct sigaction sa; | |
1169 | sigset_t sigset; | |
fac6795d | 1170 | |
1d4b027a | 1171 | if ((ret = sigemptyset(&sigset)) < 0) { |
76d7553f | 1172 | PERROR("sigemptyset"); |
1d4b027a DG |
1173 | return ret; |
1174 | } | |
d6f42150 | 1175 | |
1d4b027a DG |
1176 | sa.sa_mask = sigset; |
1177 | sa.sa_flags = 0; | |
0072e5e2 MD |
1178 | |
1179 | sa.sa_handler = sighandler; | |
1d4b027a | 1180 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
76d7553f | 1181 | PERROR("sigaction"); |
1d4b027a | 1182 | return ret; |
d6f42150 DG |
1183 | } |
1184 | ||
1d4b027a | 1185 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { |
76d7553f | 1186 | PERROR("sigaction"); |
1d4b027a | 1187 | return ret; |
d6f42150 | 1188 | } |
aaf26714 | 1189 | |
0072e5e2 | 1190 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
76d7553f | 1191 | PERROR("sigaction"); |
1d4b027a | 1192 | return ret; |
8c0faa1d DG |
1193 | } |
1194 | ||
0072e5e2 MD |
1195 | sa.sa_handler = SIG_IGN; |
1196 | if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) { | |
0bb7724a DG |
1197 | PERROR("sigaction"); |
1198 | return ret; | |
1199 | } | |
1200 | ||
1201 | DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT"); | |
1d4b027a DG |
1202 | |
1203 | return ret; | |
fac6795d DG |
1204 | } |
1205 | ||
f3ed775e | 1206 | /* |
d063d709 | 1207 | * Set open files limit to unlimited. This daemon can open a large number of |
514bb9f0 | 1208 | * file descriptors in order to consume multiple kernel traces. |
f3ed775e DG |
1209 | */ |
1210 | static void set_ulimit(void) | |
1211 | { | |
1212 | int ret; | |
1213 | struct rlimit lim; | |
1214 | ||
514bb9f0 | 1215 | /* The kernel does not allow an infinite limit for open files */ |
f3ed775e DG |
1216 | lim.rlim_cur = 65535; |
1217 | lim.rlim_max = 65535; | |
1218 | ||
1219 | ret = setrlimit(RLIMIT_NOFILE, &lim); | |
1220 | if (ret < 0) { | |
76d7553f | 1221 | PERROR("failed to set open files limit"); |
f3ed775e DG |
1222 | } |
1223 | } | |
1224 | ||
4a15001e | 1225 | static int write_pidfile(void) |
35f90c40 | 1226 | { |
412d7227 | 1227 | return utils_create_pid_file(getpid(), the_config.pid_file_path.value); |
35f90c40 DG |
1228 | } |
1229 | ||
e6142f2e JG |
1230 | static int set_clock_plugin_env(void) |
1231 | { | |
1232 | int ret = 0; | |
1233 | char *env_value = NULL; | |
cd9290dd | 1234 | |
412d7227 | 1235 | if (!the_config.lttng_ust_clock_plugin.value) { |
e6142f2e JG |
1236 | goto end; |
1237 | } | |
1238 | ||
3cfcd698 | 1239 | ret = asprintf(&env_value, "LTTNG_UST_CLOCK_PLUGIN=%s", |
412d7227 | 1240 | the_config.lttng_ust_clock_plugin.value); |
cd9290dd | 1241 | if (ret < 0) { |
e6142f2e JG |
1242 | PERROR("asprintf"); |
1243 | goto end; | |
cd9290dd DG |
1244 | } |
1245 | ||
e6142f2e JG |
1246 | ret = putenv(env_value); |
1247 | if (ret) { | |
1248 | free(env_value); | |
1249 | PERROR("putenv of LTTNG_UST_CLOCK_PLUGIN"); | |
1250 | goto end; | |
1251 | } | |
cd9290dd | 1252 | |
e6142f2e | 1253 | DBG("Updated LTTNG_UST_CLOCK_PLUGIN environment variable to \"%s\"", |
412d7227 | 1254 | the_config.lttng_ust_clock_plugin.value); |
e6142f2e | 1255 | end: |
4a15001e | 1256 | return ret; |
ef367a93 JG |
1257 | } |
1258 | ||
99d688f2 JG |
1259 | static void destroy_all_sessions_and_wait(void) |
1260 | { | |
1261 | struct ltt_session *session, *tmp; | |
1262 | struct ltt_session_list *session_list; | |
1263 | ||
1264 | session_list = session_get_list(); | |
1265 | DBG("Initiating destruction of all sessions"); | |
1266 | ||
1267 | if (!session_list) { | |
1268 | return; | |
1269 | } | |
1270 | ||
99d688f2 JG |
1271 | session_lock_list(); |
1272 | /* Initiate the destruction of all sessions. */ | |
1273 | cds_list_for_each_entry_safe(session, tmp, | |
1274 | &session_list->head, list) { | |
1275 | if (!session_get(session)) { | |
1276 | continue; | |
1277 | } | |
1278 | ||
1279 | session_lock(session); | |
1280 | if (session->destroyed) { | |
1281 | goto unlock_session; | |
1282 | } | |
63763958 | 1283 | (void) cmd_stop_trace(session); |
412d7227 SM |
1284 | (void) cmd_destroy_session( |
1285 | session, the_notification_thread_handle, NULL); | |
99d688f2 JG |
1286 | unlock_session: |
1287 | session_unlock(session); | |
1288 | session_put(session); | |
1289 | } | |
1290 | session_unlock_list(); | |
1291 | ||
1292 | /* Wait for the destruction of all sessions to complete. */ | |
1293 | DBG("Waiting for the destruction of all sessions to complete"); | |
1294 | session_list_wait_empty(); | |
1295 | DBG("Destruction of all sessions completed"); | |
1296 | } | |
1297 | ||
b69a1b40 JG |
1298 | static void unregister_all_triggers(void) |
1299 | { | |
1300 | enum lttng_error_code ret_code; | |
1301 | enum lttng_trigger_status trigger_status; | |
1302 | struct lttng_triggers *triggers = NULL; | |
1303 | unsigned int trigger_count, i; | |
1304 | const struct lttng_credentials creds = { | |
1305 | .uid = LTTNG_OPTIONAL_INIT_VALUE(0), | |
1306 | }; | |
1307 | ||
1308 | DBG("Unregistering all triggers"); | |
1309 | ||
1310 | /* | |
1311 | * List all triggers as "root" since we wish to unregister all triggers. | |
1312 | */ | |
1313 | ret_code = notification_thread_command_list_triggers( | |
412d7227 SM |
1314 | the_notification_thread_handle, creds.uid.value, |
1315 | &triggers); | |
b69a1b40 JG |
1316 | if (ret_code != LTTNG_OK) { |
1317 | ERR("Failed to list triggers while unregistering all triggers"); | |
1318 | goto end; | |
1319 | } | |
1320 | ||
1321 | trigger_status = lttng_triggers_get_count(triggers, &trigger_count); | |
1322 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
1323 | ||
1324 | for (i = 0; i < trigger_count; i++) { | |
1325 | enum lttng_error_code ret_code; | |
1326 | uid_t trigger_owner; | |
1327 | const char *trigger_name; | |
1328 | const struct lttng_trigger *trigger = | |
1329 | lttng_triggers_get_at_index(triggers, i); | |
1330 | ||
1331 | assert(trigger); | |
1332 | ||
1333 | trigger_status = lttng_trigger_get_owner_uid( | |
1334 | trigger, &trigger_owner); | |
1335 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
1336 | ||
1337 | trigger_status = lttng_trigger_get_name(trigger, &trigger_name); | |
1338 | assert(trigger_status == LTTNG_TRIGGER_STATUS_OK); | |
1339 | ||
1340 | DBG("Unregistering trigger: trigger owner uid = %d, trigger name = '%s'", | |
1341 | (int) trigger_owner, trigger_name); | |
1342 | ||
412d7227 SM |
1343 | ret_code = cmd_unregister_trigger(&creds, trigger, |
1344 | the_notification_thread_handle); | |
b69a1b40 JG |
1345 | if (ret_code != LTTNG_OK) { |
1346 | ERR("Failed to unregister trigger: trigger owner uid = %d, trigger name = '%s', error: '%s'", | |
1347 | (int) trigger_owner, trigger_name, | |
1348 | lttng_strerror(-ret_code)); | |
1349 | /* Continue to unregister the remaining triggers. */ | |
1350 | } | |
1351 | } | |
1352 | end: | |
1353 | lttng_triggers_destroy(triggers); | |
1354 | } | |
1355 | ||
929f71ec JG |
1356 | static int run_as_worker_post_fork_cleanup(void *data) |
1357 | { | |
1358 | struct sessiond_config *sessiond_config = data; | |
1359 | ||
1360 | sessiond_config_fini(sessiond_config); | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | static int launch_run_as_worker(const char *procname) | |
1365 | { | |
1366 | /* | |
1367 | * Clean-up before forking the run-as worker. Any dynamically | |
1368 | * allocated memory of which the worker is not aware will | |
1369 | * be leaked as the process forks a run-as worker (and performs | |
1370 | * no exec*()). The same would apply to any opened fd. | |
1371 | */ | |
412d7227 SM |
1372 | return run_as_create_worker( |
1373 | procname, run_as_worker_post_fork_cleanup, &the_config); | |
929f71ec JG |
1374 | } |
1375 | ||
52a0e931 JG |
1376 | static void sessiond_uuid_log(void) |
1377 | { | |
c70636a7 | 1378 | char uuid_str[LTTNG_UUID_STR_LEN]; |
52a0e931 | 1379 | |
412d7227 | 1380 | lttng_uuid_to_str(the_sessiond_uuid, uuid_str); |
52a0e931 JG |
1381 | DBG("Starting lttng-sessiond {%s}", uuid_str); |
1382 | } | |
1383 | ||
fac6795d DG |
1384 | /* |
1385 | * main | |
1386 | */ | |
1387 | int main(int argc, char **argv) | |
1388 | { | |
4a15001e | 1389 | int ret = 0, retval = 0; |
e6142f2e | 1390 | const char *env_app_timeout; |
b3530820 JG |
1391 | struct lttng_pipe *ust32_channel_monitor_pipe = NULL, |
1392 | *ust64_channel_monitor_pipe = NULL, | |
1393 | *kernel_channel_monitor_pipe = NULL; | |
a3707772 | 1394 | struct lttng_thread *ht_cleanup_thread = NULL; |
bc26e826 | 1395 | struct timer_thread_parameters timer_thread_parameters; |
64d9b072 JG |
1396 | /* Rotation thread handle. */ |
1397 | struct rotation_thread_handle *rotation_thread_handle = NULL; | |
d086f507 JD |
1398 | /* Queue of rotation jobs populated by the sessiond-timer. */ |
1399 | struct rotation_thread_timer_queue *rotation_timer_queue = NULL; | |
917a718d | 1400 | struct lttng_thread *client_thread = NULL; |
4a91420c | 1401 | struct lttng_thread *notification_thread = NULL; |
bd9addf7 | 1402 | struct lttng_thread *register_apps_thread = NULL; |
fac6795d | 1403 | |
f5fb86c1 | 1404 | logger_set_thread_name("Main", false); |
335a95b7 MD |
1405 | init_kernel_workarounds(); |
1406 | ||
f6a9efaa DG |
1407 | rcu_register_thread(); |
1408 | ||
4a15001e MD |
1409 | if (set_signal_handler()) { |
1410 | retval = -1; | |
1411 | goto exit_set_signal_handler; | |
0bb7724a DG |
1412 | } |
1413 | ||
92816cc3 | 1414 | if (timer_signal_init()) { |
d086f507 JD |
1415 | retval = -1; |
1416 | goto exit_set_signal_handler; | |
1417 | } | |
1418 | ||
412d7227 SM |
1419 | the_page_size = sysconf(_SC_PAGESIZE); |
1420 | if (the_page_size < 0) { | |
12744796 | 1421 | PERROR("sysconf _SC_PAGESIZE"); |
412d7227 SM |
1422 | the_page_size = LONG_MAX; |
1423 | WARN("Fallback page size to %ld", the_page_size); | |
12744796 DG |
1424 | } |
1425 | ||
412d7227 | 1426 | ret = sessiond_config_init(&the_config); |
e6142f2e JG |
1427 | if (ret) { |
1428 | retval = -1; | |
1429 | goto exit_set_signal_handler; | |
1430 | } | |
1431 | ||
2788b494 JR |
1432 | /* |
1433 | * Init config from environment variables. | |
1434 | * Command line option override env configuration per-doc. Do env first. | |
1435 | */ | |
412d7227 | 1436 | sessiond_config_apply_env_config(&the_config); |
2788b494 | 1437 | |
4a15001e MD |
1438 | /* |
1439 | * Parse arguments and load the daemon configuration file. | |
1440 | * | |
1441 | * We have an exit_options exit path to free memory reserved by | |
1442 | * set_options. This is needed because the rest of sessiond_cleanup() | |
1443 | * depends on ht_cleanup_thread, which depends on lttng_daemonize, which | |
1444 | * depends on set_options. | |
1445 | */ | |
fac6795d | 1446 | progname = argv[0]; |
4a15001e MD |
1447 | if (set_options(argc, argv)) { |
1448 | retval = -1; | |
1449 | goto exit_options; | |
fac6795d DG |
1450 | } |
1451 | ||
e6142f2e JG |
1452 | /* |
1453 | * Resolve all paths received as arguments, configuration option, or | |
1454 | * through environment variable as absolute paths. This is necessary | |
1455 | * since daemonizing causes the sessiond's current working directory | |
1456 | * to '/'. | |
1457 | */ | |
412d7227 | 1458 | ret = sessiond_config_resolve_paths(&the_config); |
e6142f2e JG |
1459 | if (ret) { |
1460 | goto exit_options; | |
1461 | } | |
1462 | ||
1463 | /* Apply config. */ | |
412d7227 SM |
1464 | lttng_opt_verbose = the_config.verbose; |
1465 | lttng_opt_quiet = the_config.quiet; | |
1466 | the_kconsumer_data.err_unix_sock_path = | |
1467 | the_config.kconsumerd_err_unix_sock_path.value; | |
1468 | the_kconsumer_data.cmd_unix_sock_path = | |
1469 | the_config.kconsumerd_cmd_unix_sock_path.value; | |
1470 | the_ustconsumer32_data.err_unix_sock_path = | |
1471 | the_config.consumerd32_err_unix_sock_path.value; | |
1472 | the_ustconsumer32_data.cmd_unix_sock_path = | |
1473 | the_config.consumerd32_cmd_unix_sock_path.value; | |
1474 | the_ustconsumer64_data.err_unix_sock_path = | |
1475 | the_config.consumerd64_err_unix_sock_path.value; | |
1476 | the_ustconsumer64_data.cmd_unix_sock_path = | |
1477 | the_config.consumerd64_cmd_unix_sock_path.value; | |
e6142f2e JG |
1478 | set_clock_plugin_env(); |
1479 | ||
412d7227 | 1480 | sessiond_config_log(&the_config); |
52a0e931 | 1481 | sessiond_uuid_log(); |
e6142f2e | 1482 | |
a3bc3918 JR |
1483 | if (opt_print_version) { |
1484 | print_version(); | |
1485 | retval = 0; | |
1486 | goto exit_options; | |
1487 | } | |
1488 | ||
f472090a JG |
1489 | if (create_lttng_rundir()) { |
1490 | retval = -1; | |
1491 | goto exit_options; | |
1492 | } | |
1493 | ||
1494 | /* Abort launch if a session daemon is already running. */ | |
1495 | if (check_existing_daemon()) { | |
1496 | ERR("A session daemon is already running."); | |
1497 | retval = -1; | |
1498 | goto exit_options; | |
1499 | } | |
1500 | ||
fac6795d | 1501 | /* Daemonize */ |
412d7227 | 1502 | if (the_config.daemonize || the_config.background) { |
ceed52b5 MD |
1503 | int i; |
1504 | ||
412d7227 SM |
1505 | ret = lttng_daemonize(&the_child_ppid, &recv_child_signal, |
1506 | !the_config.background); | |
53094c05 | 1507 | if (ret < 0) { |
4a15001e MD |
1508 | retval = -1; |
1509 | goto exit_options; | |
53094c05 | 1510 | } |
0bb7724a | 1511 | |
ceed52b5 | 1512 | /* |
0bb7724a | 1513 | * We are in the child. Make sure all other file descriptors are |
4a15001e | 1514 | * closed, in case we are called with more opened file |
f472090a | 1515 | * descriptors than the standard ones and the lock file. |
ceed52b5 MD |
1516 | */ |
1517 | for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) { | |
f472090a JG |
1518 | if (i == lockfile_fd) { |
1519 | continue; | |
1520 | } | |
ceed52b5 MD |
1521 | (void) close(i); |
1522 | } | |
1523 | } | |
1524 | ||
929f71ec | 1525 | if (launch_run_as_worker(argv[0]) < 0) { |
7567352f MD |
1526 | goto exit_create_run_as_worker_cleanup; |
1527 | } | |
1528 | ||
4a15001e MD |
1529 | /* |
1530 | * Starting from here, we can create threads. This needs to be after | |
1531 | * lttng_daemonize due to RCU. | |
1532 | */ | |
1533 | ||
1534 | /* | |
1535 | * Initialize the health check subsystem. This call should set the | |
1536 | * appropriate time values. | |
1537 | */ | |
412d7227 SM |
1538 | the_health_sessiond = health_app_create(NR_HEALTH_SESSIOND_TYPES); |
1539 | if (!the_health_sessiond) { | |
4a15001e MD |
1540 | PERROR("health_app_create error"); |
1541 | retval = -1; | |
0d64e8fb | 1542 | goto stop_threads; |
4a15001e MD |
1543 | } |
1544 | ||
4a15001e | 1545 | /* Create thread to clean up RCU hash tables */ |
a3707772 JG |
1546 | ht_cleanup_thread = launch_ht_cleanup_thread(); |
1547 | if (!ht_cleanup_thread) { | |
4a15001e | 1548 | retval = -1; |
0d64e8fb | 1549 | goto stop_threads; |
4a15001e MD |
1550 | } |
1551 | ||
ceed52b5 | 1552 | /* Create thread quit pipe */ |
a7333da7 | 1553 | if (sessiond_init_thread_quit_pipe()) { |
4a15001e | 1554 | retval = -1; |
0d64e8fb | 1555 | goto stop_threads; |
fac6795d DG |
1556 | } |
1557 | ||
1558 | /* Check if daemon is UID = 0 */ | |
1559 | is_root = !getuid(); | |
fac6795d | 1560 | if (is_root) { |
67e40797 | 1561 | /* Create global run dir with root access */ |
67e40797 | 1562 | |
b3530820 JG |
1563 | kernel_channel_monitor_pipe = lttng_pipe_open(0); |
1564 | if (!kernel_channel_monitor_pipe) { | |
1565 | ERR("Failed to create kernel consumer channel monitor pipe"); | |
1566 | retval = -1; | |
0d64e8fb | 1567 | goto stop_threads; |
b3530820 | 1568 | } |
412d7227 | 1569 | the_kconsumer_data.channel_monitor_pipe = |
b3530820 | 1570 | lttng_pipe_release_writefd( |
412d7227 SM |
1571 | kernel_channel_monitor_pipe); |
1572 | if (the_kconsumer_data.channel_monitor_pipe < 0) { | |
b3530820 | 1573 | retval = -1; |
0d64e8fb | 1574 | goto stop_threads; |
b3530820 | 1575 | } |
fac6795d DG |
1576 | } |
1577 | ||
5c827ce0 | 1578 | /* Set consumer initial state */ |
412d7227 SM |
1579 | the_kernel_consumerd_state = CONSUMER_STOPPED; |
1580 | the_ust_consumerd_state = CONSUMER_STOPPED; | |
5c827ce0 | 1581 | |
b3530820 JG |
1582 | ust32_channel_monitor_pipe = lttng_pipe_open(0); |
1583 | if (!ust32_channel_monitor_pipe) { | |
1584 | ERR("Failed to create 32-bit user space consumer channel monitor pipe"); | |
1585 | retval = -1; | |
0d64e8fb | 1586 | goto stop_threads; |
b3530820 | 1587 | } |
412d7227 SM |
1588 | the_ustconsumer32_data.channel_monitor_pipe = |
1589 | lttng_pipe_release_writefd(ust32_channel_monitor_pipe); | |
1590 | if (the_ustconsumer32_data.channel_monitor_pipe < 0) { | |
b3530820 | 1591 | retval = -1; |
0d64e8fb | 1592 | goto stop_threads; |
b3530820 | 1593 | } |
62c43103 | 1594 | |
d086f507 | 1595 | /* |
92816cc3 JG |
1596 | * The rotation_thread_timer_queue structure is shared between the |
1597 | * sessiond timer thread and the rotation thread. The main thread keeps | |
1598 | * its ownership and destroys it when both threads have been joined. | |
d086f507 | 1599 | */ |
92816cc3 | 1600 | rotation_timer_queue = rotation_thread_timer_queue_create(); |
d086f507 JD |
1601 | if (!rotation_timer_queue) { |
1602 | retval = -1; | |
0d64e8fb | 1603 | goto stop_threads; |
d086f507 | 1604 | } |
bc26e826 JG |
1605 | timer_thread_parameters.rotation_thread_job_queue = |
1606 | rotation_timer_queue; | |
67e40797 | 1607 | |
b3530820 JG |
1608 | ust64_channel_monitor_pipe = lttng_pipe_open(0); |
1609 | if (!ust64_channel_monitor_pipe) { | |
1610 | ERR("Failed to create 64-bit user space consumer channel monitor pipe"); | |
1611 | retval = -1; | |
0d64e8fb | 1612 | goto stop_threads; |
b3530820 | 1613 | } |
412d7227 SM |
1614 | the_ustconsumer64_data.channel_monitor_pipe = |
1615 | lttng_pipe_release_writefd(ust64_channel_monitor_pipe); | |
1616 | if (the_ustconsumer64_data.channel_monitor_pipe < 0) { | |
b3530820 | 1617 | retval = -1; |
0d64e8fb | 1618 | goto stop_threads; |
b3530820 | 1619 | } |
847177cd | 1620 | |
1427f9b2 DG |
1621 | /* |
1622 | * Init UST app hash table. Alloc hash table before this point since | |
1623 | * cleanup() can get called after that point. | |
1624 | */ | |
4a15001e | 1625 | if (ust_app_ht_alloc()) { |
ddbeb0f6 | 1626 | ERR("Failed to allocate UST app hash table"); |
4a15001e | 1627 | retval = -1; |
0d64e8fb | 1628 | goto stop_threads; |
4a15001e | 1629 | } |
1427f9b2 | 1630 | |
412d7227 | 1631 | event_notifier_error_accounting_init(the_config.event_notifier_error_counter_bucket); |
90aa04a1 | 1632 | |
6a4e4039 JG |
1633 | /* |
1634 | * Initialize agent app hash table. We allocate the hash table here | |
1635 | * since cleanup() can get called after this point. | |
1636 | */ | |
1637 | if (agent_app_ht_alloc()) { | |
1638 | ERR("Failed to allocate Agent app hash table"); | |
4a15001e | 1639 | retval = -1; |
0d64e8fb | 1640 | goto stop_threads; |
f20baf8e DG |
1641 | } |
1642 | ||
44760c20 JR |
1643 | if (agent_by_event_notifier_domain_ht_create()) { |
1644 | ERR("Failed to allocate per-event notifier domain agent hash table"); | |
1645 | retval = -1; | |
1646 | goto stop_threads; | |
1647 | } | |
a88df331 DG |
1648 | /* |
1649 | * These actions must be executed as root. We do that *after* setting up | |
1650 | * the sockets path because we MUST make the check for another daemon using | |
1651 | * those paths *before* trying to set the kernel consumer sockets and init | |
1652 | * kernel tracer. | |
1653 | */ | |
1654 | if (is_root) { | |
412d7227 | 1655 | if (set_consumer_sockets(&the_kconsumer_data)) { |
4a15001e | 1656 | retval = -1; |
0d64e8fb | 1657 | goto stop_threads; |
7753dea8 MD |
1658 | } |
1659 | ||
a88df331 | 1660 | /* Setup kernel tracer */ |
412d7227 | 1661 | if (!the_config.no_kernel) { |
4fba7219 DG |
1662 | init_kernel_tracer(); |
1663 | } | |
a88df331 DG |
1664 | |
1665 | /* Set ulimit for open files */ | |
1666 | set_ulimit(); | |
fac6795d | 1667 | } |
4063050c MD |
1668 | /* init lttng_fd tracking must be done after set_ulimit. */ |
1669 | lttng_fd_init(); | |
fac6795d | 1670 | |
412d7227 | 1671 | if (set_consumer_sockets(&the_ustconsumer64_data)) { |
4a15001e | 1672 | retval = -1; |
0d64e8fb | 1673 | goto stop_threads; |
67e40797 DG |
1674 | } |
1675 | ||
412d7227 | 1676 | if (set_consumer_sockets(&the_ustconsumer32_data)) { |
4a15001e | 1677 | retval = -1; |
0d64e8fb | 1678 | goto stop_threads; |
67e40797 DG |
1679 | } |
1680 | ||
5b8719f5 | 1681 | /* Get parent pid if -S, --sig-parent is specified. */ |
412d7227 SM |
1682 | if (the_config.sig_parent) { |
1683 | the_ppid = getppid(); | |
5b8719f5 DG |
1684 | } |
1685 | ||
7a485870 | 1686 | /* Setup the kernel pipe for waking up the kernel thread */ |
412d7227 SM |
1687 | if (is_root && !the_config.no_kernel) { |
1688 | if (utils_create_pipe_cloexec(the_kernel_poll_pipe)) { | |
4a15001e | 1689 | retval = -1; |
0d64e8fb | 1690 | goto stop_threads; |
6620da75 | 1691 | } |
7a485870 DG |
1692 | } |
1693 | ||
099e26bd | 1694 | /* Setup the thread apps communication pipe. */ |
4a15001e MD |
1695 | if (utils_create_pipe_cloexec(apps_cmd_pipe)) { |
1696 | retval = -1; | |
0d64e8fb | 1697 | goto stop_threads; |
099e26bd DG |
1698 | } |
1699 | ||
d0b96690 | 1700 | /* Setup the thread apps notify communication pipe. */ |
4a15001e MD |
1701 | if (utils_create_pipe_cloexec(apps_cmd_notify_pipe)) { |
1702 | retval = -1; | |
0d64e8fb | 1703 | goto stop_threads; |
d0b96690 DG |
1704 | } |
1705 | ||
7972aab2 DG |
1706 | /* Initialize global buffer per UID and PID registry. */ |
1707 | buffer_reg_init_uid_registry(); | |
1708 | buffer_reg_init_pid_registry(); | |
1709 | ||
099e26bd | 1710 | /* Init UST command queue. */ |
8bdee6e2 | 1711 | cds_wfcq_init(&ust_cmd_queue.head, &ust_cmd_queue.tail); |
099e26bd | 1712 | |
2f77fc4b | 1713 | cmd_init(); |
00e2e675 | 1714 | |
ae9e45b3 DG |
1715 | /* Check for the application socket timeout env variable. */ |
1716 | env_app_timeout = getenv(DEFAULT_APP_SOCKET_TIMEOUT_ENV); | |
1717 | if (env_app_timeout) { | |
412d7227 | 1718 | the_config.app_socket_timeout = atoi(env_app_timeout); |
ae9e45b3 | 1719 | } else { |
412d7227 | 1720 | the_config.app_socket_timeout = DEFAULT_APP_SOCKET_RW_TIMEOUT; |
ae9e45b3 DG |
1721 | } |
1722 | ||
4a15001e MD |
1723 | ret = write_pidfile(); |
1724 | if (ret) { | |
1725 | ERR("Error in write_pidfile"); | |
1726 | retval = -1; | |
0d64e8fb | 1727 | goto stop_threads; |
4a15001e | 1728 | } |
35f90c40 | 1729 | |
554831e7 MD |
1730 | /* Initialize communication library */ |
1731 | lttcomm_init(); | |
4a15001e | 1732 | /* Initialize TCP timeout values */ |
d831c249 | 1733 | lttcomm_inet_init(); |
554831e7 | 1734 | |
12b4fb37 | 1735 | /* Create health-check thread. */ |
173fca4f | 1736 | if (!launch_health_management_thread()) { |
4a15001e | 1737 | retval = -1; |
0d64e8fb | 1738 | goto stop_threads; |
44a5e5eb DG |
1739 | } |
1740 | ||
b3530820 | 1741 | /* notification_thread_data acquires the pipes' read side. */ |
412d7227 SM |
1742 | the_notification_thread_handle = notification_thread_handle_create( |
1743 | ust32_channel_monitor_pipe, ust64_channel_monitor_pipe, | |
c8a9de5a | 1744 | kernel_channel_monitor_pipe); |
412d7227 | 1745 | if (!the_notification_thread_handle) { |
b3530820 JG |
1746 | retval = -1; |
1747 | ERR("Failed to create notification thread shared data"); | |
0d64e8fb | 1748 | goto stop_threads; |
b3530820 JG |
1749 | } |
1750 | ||
1751 | /* Create notification thread. */ | |
4a91420c | 1752 | notification_thread = launch_notification_thread( |
412d7227 | 1753 | the_notification_thread_handle); |
4a91420c | 1754 | if (!notification_thread) { |
b3530820 | 1755 | retval = -1; |
0d64e8fb | 1756 | goto stop_threads; |
b3530820 JG |
1757 | } |
1758 | ||
d086f507 | 1759 | /* Create timer thread. */ |
bc26e826 | 1760 | if (!launch_timer_thread(&timer_thread_parameters)) { |
d086f507 | 1761 | retval = -1; |
0d64e8fb | 1762 | goto stop_threads; |
d086f507 | 1763 | } |
d086f507 | 1764 | |
db66e574 JD |
1765 | /* rotation_thread_data acquires the pipes' read side. */ |
1766 | rotation_thread_handle = rotation_thread_handle_create( | |
412d7227 | 1767 | rotation_timer_queue, the_notification_thread_handle); |
db66e574 JD |
1768 | if (!rotation_thread_handle) { |
1769 | retval = -1; | |
1770 | ERR("Failed to create rotation thread shared data"); | |
1771 | stop_threads(); | |
0d64e8fb | 1772 | goto stop_threads; |
db66e574 | 1773 | } |
db66e574 JD |
1774 | |
1775 | /* Create rotation thread. */ | |
64d9b072 | 1776 | if (!launch_rotation_thread(rotation_thread_handle)) { |
db66e574 | 1777 | retval = -1; |
0d64e8fb | 1778 | goto stop_threads; |
db66e574 JD |
1779 | } |
1780 | ||
cf3af59e | 1781 | /* Create thread to manage the client socket */ |
917a718d JG |
1782 | client_thread = launch_client_thread(); |
1783 | if (!client_thread) { | |
4a15001e | 1784 | retval = -1; |
0d64e8fb | 1785 | goto stop_threads; |
cf3af59e | 1786 | } |
fac6795d | 1787 | |
308df7bb | 1788 | /* Set credentials of the client socket and rundir */ |
412d7227 | 1789 | if (is_root && set_permissions(the_config.rundir.value)) { |
308df7bb JG |
1790 | retval = -1; |
1791 | goto stop_threads; | |
1792 | } | |
1793 | ||
5d1b0219 JG |
1794 | if (!launch_ust_dispatch_thread(&ust_cmd_queue, apps_cmd_pipe[1], |
1795 | apps_cmd_notify_pipe[1])) { | |
4a15001e | 1796 | retval = -1; |
0d64e8fb | 1797 | goto stop_threads; |
099e26bd DG |
1798 | } |
1799 | ||
1800 | /* Create thread to manage application registration. */ | |
bd9addf7 JG |
1801 | register_apps_thread = launch_application_registration_thread( |
1802 | &ust_cmd_queue); | |
1803 | if (!register_apps_thread) { | |
4a15001e | 1804 | retval = -1; |
0d64e8fb | 1805 | goto stop_threads; |
099e26bd DG |
1806 | } |
1807 | ||
cf3af59e | 1808 | /* Create thread to manage application socket */ |
7649924e | 1809 | if (!launch_application_management_thread(apps_cmd_pipe[0])) { |
4a15001e | 1810 | retval = -1; |
0d64e8fb | 1811 | goto stop_threads; |
d0b96690 DG |
1812 | } |
1813 | ||
1814 | /* Create thread to manage application notify socket */ | |
971a61c6 | 1815 | if (!launch_application_notification_thread(apps_cmd_notify_pipe[0])) { |
4a15001e | 1816 | retval = -1; |
0d64e8fb | 1817 | goto stop_threads; |
cf3af59e | 1818 | } |
fac6795d | 1819 | |
8a7e4590 JG |
1820 | /* Create agent management thread. */ |
1821 | if (!launch_agent_management_thread()) { | |
4a15001e | 1822 | retval = -1; |
0d64e8fb | 1823 | goto stop_threads; |
4d076222 DG |
1824 | } |
1825 | ||
6620da75 | 1826 | /* Don't start this thread if kernel tracing is not requested nor root */ |
412d7227 | 1827 | if (is_root && !the_config.no_kernel) { |
6620da75 | 1828 | /* Create kernel thread to manage kernel event */ |
412d7227 | 1829 | if (!launch_kernel_management_thread(the_kernel_poll_pipe[0])) { |
4a15001e | 1830 | retval = -1; |
0d64e8fb | 1831 | goto stop_threads; |
6620da75 | 1832 | } |
352b58f5 JR |
1833 | |
1834 | if (kernel_get_notification_fd() >= 0) { | |
1835 | ret = notification_thread_command_add_tracer_event_source( | |
412d7227 | 1836 | the_notification_thread_handle, |
352b58f5 JR |
1837 | kernel_get_notification_fd(), |
1838 | LTTNG_DOMAIN_KERNEL); | |
1839 | if (ret != LTTNG_OK) { | |
1840 | ERR("Failed to add kernel trigger event source to notification thread"); | |
1841 | retval = -1; | |
1842 | goto stop_threads; | |
1843 | } | |
1844 | } | |
ef367a93 | 1845 | } |
7a485870 | 1846 | |
3316b9d6 | 1847 | /* Load sessions. */ |
412d7227 SM |
1848 | ret = config_load_session( |
1849 | the_config.load_session_path.value, NULL, 1, 1, NULL); | |
4a15001e | 1850 | if (ret) { |
3316b9d6 | 1851 | ERR("Session load failed: %s", error_get_str(ret)); |
4a15001e | 1852 | retval = -1; |
0d64e8fb | 1853 | goto stop_threads; |
4a15001e MD |
1854 | } |
1855 | ||
3316b9d6 JG |
1856 | /* Initialization completed. */ |
1857 | sessiond_signal_parents(); | |
1858 | ||
4a15001e MD |
1859 | /* |
1860 | * This is where we start awaiting program completion (e.g. through | |
1861 | * signal that asks threads to teardown). | |
1862 | */ | |
1863 | ||
99d688f2 | 1864 | /* Initiate teardown once activity occurs on the quit pipe. */ |
2d54bfb6 | 1865 | sessiond_wait_for_quit_pipe(-1); |
917a718d | 1866 | |
0d64e8fb | 1867 | stop_threads: |
90aa04a1 | 1868 | |
917a718d JG |
1869 | /* |
1870 | * Ensure that the client thread is no longer accepting new commands, | |
1871 | * which could cause new sessions to be created. | |
1872 | */ | |
0d64e8fb JG |
1873 | if (client_thread) { |
1874 | lttng_thread_shutdown(client_thread); | |
917a718d | 1875 | lttng_thread_put(client_thread); |
917a718d JG |
1876 | } |
1877 | ||
99d688f2 | 1878 | destroy_all_sessions_and_wait(); |
0d64e8fb | 1879 | |
b69a1b40 JG |
1880 | /* |
1881 | * At this point no new trigger can be registered (no sessions are | |
1882 | * running/rotating) and clients can't connect to the session daemon | |
1883 | * anymore. Unregister all triggers. | |
1884 | */ | |
1885 | unregister_all_triggers(); | |
1886 | ||
bd9addf7 JG |
1887 | if (register_apps_thread) { |
1888 | lttng_thread_shutdown(register_apps_thread); | |
1889 | lttng_thread_put(register_apps_thread); | |
1890 | } | |
a3707772 | 1891 | lttng_thread_list_shutdown_orphans(); |
917a718d | 1892 | |
4d62fbf8 MD |
1893 | /* |
1894 | * Wait for all pending call_rcu work to complete before tearing | |
1895 | * down data structures. call_rcu worker may be trying to | |
1896 | * perform lookups in those structures. | |
1897 | */ | |
1898 | rcu_barrier(); | |
4a15001e MD |
1899 | /* |
1900 | * sessiond_cleanup() is called when no other thread is running, except | |
1901 | * the ht_cleanup thread, which is needed to destroy the hash tables. | |
1902 | */ | |
1903 | rcu_thread_online(); | |
1904 | sessiond_cleanup(); | |
06f525de | 1905 | |
3b8a092f | 1906 | /* |
1d25334c | 1907 | * Wait for all pending call_rcu work to complete before shutting down |
3b8a092f FD |
1908 | * the notification thread. This call_rcu work includes shutting down |
1909 | * UST apps and event notifier pipes. | |
1910 | */ | |
1911 | rcu_barrier(); | |
1912 | ||
4a91420c JG |
1913 | if (notification_thread) { |
1914 | lttng_thread_shutdown(notification_thread); | |
1915 | lttng_thread_put(notification_thread); | |
1916 | } | |
1917 | ||
90aa04a1 | 1918 | /* |
1d25334c FD |
1919 | * Error accounting teardown has to be done after the teardown of all |
1920 | * event notifier pipes to ensure that no tracer may try to use the | |
1921 | * error accounting facilities. | |
90aa04a1 FD |
1922 | */ |
1923 | event_notifier_error_accounting_fini(); | |
1924 | ||
1d25334c FD |
1925 | /* |
1926 | * Unloading the kernel modules needs to be done after all kernel | |
1927 | * ressources have been released. In our case, this includes the | |
1928 | * notification fd, the event notifier group fd, error accounting fd, | |
1929 | * all event and event notifier fds, etc. | |
1930 | * | |
1931 | * In short, at this point, we need to have called close() on all fds | |
1932 | * received from the kernel tracer. | |
1933 | */ | |
412d7227 | 1934 | if (is_root && !the_config.no_kernel) { |
1d25334c FD |
1935 | DBG("Unloading kernel modules"); |
1936 | modprobe_remove_lttng_all(); | |
1937 | } | |
1938 | ||
c4d5de9d JG |
1939 | /* |
1940 | * Ensure all prior call_rcu are done. call_rcu callbacks may push | |
1941 | * hash tables to the ht_cleanup thread. Therefore, we ensure that | |
1942 | * the queue is empty before shutting down the clean-up thread. | |
1943 | */ | |
1944 | rcu_barrier(); | |
1945 | ||
a3707772 JG |
1946 | if (ht_cleanup_thread) { |
1947 | lttng_thread_shutdown(ht_cleanup_thread); | |
1948 | lttng_thread_put(ht_cleanup_thread); | |
1949 | } | |
1950 | ||
64d9b072 JG |
1951 | rcu_thread_offline(); |
1952 | rcu_unregister_thread(); | |
1953 | ||
1954 | if (rotation_thread_handle) { | |
1955 | rotation_thread_handle_destroy(rotation_thread_handle); | |
1956 | } | |
1957 | ||
d086f507 JD |
1958 | /* |
1959 | * After the rotation and timer thread have quit, we can safely destroy | |
1960 | * the rotation_timer_queue. | |
1961 | */ | |
92816cc3 | 1962 | rotation_thread_timer_queue_destroy(rotation_timer_queue); |
c8a9de5a JG |
1963 | /* |
1964 | * The teardown of the notification system is performed after the | |
1965 | * session daemon's teardown in order to allow it to be notified | |
1966 | * of the active session and channels at the moment of the teardown. | |
1967 | */ | |
412d7227 SM |
1968 | if (the_notification_thread_handle) { |
1969 | notification_thread_handle_destroy( | |
1970 | the_notification_thread_handle); | |
c8a9de5a | 1971 | } |
b3530820 JG |
1972 | lttng_pipe_destroy(ust32_channel_monitor_pipe); |
1973 | lttng_pipe_destroy(ust64_channel_monitor_pipe); | |
1974 | lttng_pipe_destroy(kernel_channel_monitor_pipe); | |
4a15001e | 1975 | |
412d7227 SM |
1976 | if (the_health_sessiond) { |
1977 | health_app_destroy(the_health_sessiond); | |
9bc2ec5f | 1978 | } |
7567352f | 1979 | exit_create_run_as_worker_cleanup: |
4a15001e | 1980 | exit_options: |
f472090a | 1981 | sessiond_cleanup_lock_file(); |
4a15001e MD |
1982 | sessiond_cleanup_options(); |
1983 | ||
1984 | exit_set_signal_handler: | |
1985 | if (!retval) { | |
cf3af59e | 1986 | exit(EXIT_SUCCESS); |
4a15001e MD |
1987 | } else { |
1988 | exit(EXIT_FAILURE); | |
67e40797 | 1989 | } |
fac6795d | 1990 | } |