Add listing session option
[lttng-tools.git] / ltt-sessiond / ltt-sessiond.c
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 #define _GNU_SOURCE
20 #include <fcntl.h>
21 #include <getopt.h>
22 #include <grp.h>
23 #include <limits.h>
24 #include <pthread.h>
25 #include <signal.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <sys/ipc.h>
30 #include <sys/shm.h>
31 #include <sys/socket.h>
32 #include <sys/stat.h>
33 #include <sys/types.h>
34 #include <unistd.h>
35
36 #include <urcu/list.h> /* URCU list library (-lurcu) */
37 #include <ust/ustctl.h> /* UST control lib (-lust) */
38
39 #include "liblttsessiondcomm.h"
40 #include "ltt-sessiond.h"
41
42 const char default_home_dir[] = DEFAULT_HOME_DIR;
43 const char default_tracing_group[] = DEFAULT_TRACING_GROUP;
44 const char default_ust_sock_dir[] = DEFAULT_UST_SOCK_DIR;
45 const char default_global_apps_pipe[] = DEFAULT_GLOBAL_APPS_PIPE;
46
47 /* Static functions */
48 static int set_signal_handler(void);
49 static int set_socket_perms(void);
50 static void sighandler(int);
51 static void cleanup(void);
52 static void copy_common_data(struct lttcomm_lttng_msg *llm, struct lttcomm_session_msg *lsm);
53 static int check_existing_daemon(void);
54 static int notify_apps(const char*);
55 static int connect_app(pid_t);
56 static int init_daemon_socket(void);
57 static int process_client_msg(int sock, struct lttcomm_session_msg*);
58 static int send_unix_sock(int sock, void *buf, size_t len);
59 static size_t ust_list_apps(pid_t **pids);
60
61 static void *thread_manage_clients(void *);
62 static void *thread_manage_apps(void *);
63
64 static int create_session(const char*, uuid_t *);
65 static void destroy_session(uuid_t);
66
67 static struct ltt_session *find_session(uuid_t);
68
69 /* Variables */
70 const char *progname;
71 const char *opt_tracing_group;
72 static int opt_sig_parent;
73 static int opt_daemon;
74 static int is_root; /* Set to 1 if the daemon is running as root */
75 static pid_t ppid;
76
77 static char apps_unix_sock_path[PATH_MAX]; /* Global application Unix socket path */
78 static char client_unix_sock_path[PATH_MAX]; /* Global client Unix socket path */
79
80 static int client_socket;
81 static int apps_socket;
82
83 static struct ltt_session *current_session;
84
85 /* Number of element for the list below. */
86 static unsigned int session_count;
87 static unsigned int traceable_app_count;
88
89 /* Init session's list */
90 static struct ltt_session_list ltt_session_list = {
91 .head = CDS_LIST_HEAD_INIT(ltt_session_list.head),
92 };
93
94 /* Init ust traceabl application's list */
95 static struct ltt_traceable_app_list ltt_traceable_app_list = {
96 .head = CDS_LIST_HEAD_INIT(ltt_traceable_app_list.head),
97 };
98
99 /*
100 * thread_manage_apps
101 *
102 * This thread manage the application socket communication
103 */
104 static void *thread_manage_apps(void *data)
105 {
106 int sock, ret;
107 struct ltt_traceable_app *lta;
108
109 /* TODO: Something more elegant is needed but fine for now */
110 struct {
111 int reg; /* 1:register, 0:unregister */
112 pid_t pid;
113 uid_t uid;
114 } reg_msg;
115
116 /* Notify all applications to register */
117 notify_apps(default_global_apps_pipe);
118
119 ret = lttcomm_listen_unix_sock(apps_socket);
120 if (ret < 0) {
121 goto error;
122 }
123
124 while (1) {
125 /* Blocking call, waiting for transmission */
126 sock = lttcomm_accept_unix_sock(apps_socket);
127 if (sock < 0) {
128 goto error;
129 }
130
131 /* Basic recv here to handle the very simple data
132 * that the libust send to register (reg_msg).
133 */
134 ret = recv(sock, &reg_msg, sizeof(reg_msg), 0);
135 if (ret < 0) {
136 perror("recv");
137 continue;
138 }
139
140 /* Add application to the global traceable list */
141 if (reg_msg.reg == 1) {
142 /* Registering */
143 lta = malloc(sizeof(struct ltt_traceable_app));
144 lta->pid = reg_msg.pid;
145 lta->uid = reg_msg.uid;
146 cds_list_add(&lta->list, &ltt_traceable_app_list.head);
147 traceable_app_count++;
148 } else {
149 /* Unregistering */
150 lta = NULL;
151 cds_list_for_each_entry(lta, &ltt_traceable_app_list.head, list) {
152 if (lta->pid == reg_msg.pid && lta->uid == reg_msg.uid) {
153 cds_list_del(&lta->list);
154 /* Check to not overflow here */
155 if (traceable_app_count != 0) {
156 traceable_app_count--;
157 }
158 break;
159 }
160 }
161
162 /* If an item was found, free it from memory */
163 if (lta) {
164 free(lta);
165 }
166 }
167 }
168
169 error:
170
171 return NULL;
172 }
173
174 /*
175 * thread_manage_clients
176 *
177 * This thread manage all clients request using the unix
178 * client socket for communication.
179 */
180 static void *thread_manage_clients(void *data)
181 {
182 int sock, ret;
183 struct lttcomm_session_msg lsm;
184
185 ret = lttcomm_listen_unix_sock(client_socket);
186 if (ret < 0) {
187 goto error;
188 }
189
190 /* Notify parent pid that we are ready
191 * to accept command for client side.
192 */
193 if (opt_sig_parent) {
194 kill(ppid, SIGCHLD);
195 }
196
197 while (1) {
198 /* Blocking call, waiting for transmission */
199 sock = lttcomm_accept_unix_sock(client_socket);
200 if (sock < 0) {
201 goto error;
202 }
203
204 /*
205 * Data is received from the lttng client. The struct
206 * lttcomm_session_msg (lsm) contains the command and data
207 * request of the client.
208 */
209 ret = lttcomm_recv_unix_sock(sock, &lsm, sizeof(lsm));
210 if (ret < 0) {
211 continue;
212 }
213
214 /* This function dispatch the work to the LTTng or UST libs
215 * and then sends back the response to the client. This is needed
216 * because there might be more then one lttcomm_lttng_msg to
217 * send out so process_client_msg do both jobs.
218 */
219 ret = process_client_msg(sock, &lsm);
220 if (ret < 0) {
221 /* Error detected but still accept command */
222 continue;
223 }
224 }
225
226 error:
227 return NULL;
228 }
229
230 /*
231 * send_unix_sock
232 *
233 * Send data on a unix socket using the liblttsessiondcomm API.
234 *
235 * Return lttcomm error code.
236 */
237 static int send_unix_sock(int sock, void *buf, size_t len)
238 {
239 /* Check valid length */
240 if (len <= 0) {
241 return -1;
242 }
243
244 return lttcomm_send_unix_sock(sock, buf, len);
245 }
246
247 /*
248 * connect_app
249 *
250 * Return a socket connected to the libust communication socket
251 * of the application identified by the pid.
252 */
253 static int connect_app(pid_t pid)
254 {
255 int sock;
256
257 sock = ustctl_connect_pid(pid);
258 if (sock < 0) {
259 fprintf(stderr, "Fail connecting to the PID %d\n", pid);
260 }
261
262 return sock;
263 }
264
265 /*
266 * notify_apps
267 *
268 * Notify apps by writing 42 to a named pipe using name.
269 * Every applications waiting for a ltt-sessiond will be notified
270 * and re-register automatically to the session daemon.
271 *
272 * Return open or write error value.
273 */
274 static int notify_apps(const char *name)
275 {
276 int fd;
277 int ret = -1;
278
279 /* Try opening the global pipe */
280 fd = open(name, O_WRONLY);
281 if (fd < 0) {
282 goto error;
283 }
284
285 /* Notify by writing on the pipe */
286 ret = write(fd, "42", 2);
287 if (ret < 0) {
288 perror("write");
289 }
290
291 error:
292 return ret;
293 }
294
295 /*
296 * find_session
297 *
298 * Return a ltt_session structure ptr that matches the uuid.
299 */
300 static struct ltt_session *find_session(uuid_t session_id)
301 {
302 struct ltt_session *iter = NULL;
303
304 /* Sanity check for NULL session_id */
305 if (uuid_is_null(session_id)) {
306 goto end;
307 }
308
309 cds_list_for_each_entry(iter, &ltt_session_list.head, list) {
310 if (uuid_compare(iter->uuid, session_id)) {
311 break;
312 }
313 }
314
315 end:
316 return iter;
317 }
318
319 /*
320 * destroy_session
321 *
322 * Delete session from the global session list
323 * and free the memory.
324 */
325 static void destroy_session(uuid_t session_id)
326 {
327 struct ltt_session *iter = NULL;
328
329 cds_list_for_each_entry(iter, &ltt_session_list.head, list) {
330 if (uuid_compare(iter->uuid, session_id)) {
331 cds_list_del(&iter->list);
332 break;
333 }
334 }
335
336 if (iter) {
337 free(iter);
338 session_count--;
339 }
340 }
341
342 /*
343 * create_session
344 *
345 * Create a brand new session,
346 */
347 static int create_session(const char *name, uuid_t *session_id)
348 {
349 struct ltt_session *new_session;
350
351 /* Allocate session data structure */
352 new_session = malloc(sizeof(struct ltt_session));
353 if (new_session == NULL) {
354 perror("malloc");
355 goto error;
356 }
357
358 if (name != NULL) {
359 if (asprintf(&new_session->name, "%s", name) < 0) {
360 goto error;
361 }
362 } else {
363 /* Generate session name based on the session count */
364 if (asprintf(&new_session->name, "%s%d", "auto", session_count) < 0) {
365 goto error;
366 }
367 }
368
369 /* UUID generation */
370 uuid_generate(new_session->uuid);
371 uuid_copy(*session_id, new_session->uuid);
372
373 /* Set consumer (identifier) to 0. This means that there is
374 * NO consumer attach to that session yet.
375 */
376 new_session->ust_consumer = 0;
377 new_session->lttng_consumer = 0;
378
379 /* Init list */
380 CDS_INIT_LIST_HEAD(&new_session->ust_traces);
381 CDS_INIT_LIST_HEAD(&new_session->lttng_traces);
382
383 /* Add new session to the global session list */
384 cds_list_add(&new_session->list, &ltt_session_list.head);
385
386 session_count++;
387
388 return 0;
389
390 error:
391 return -1;
392 }
393
394 /*
395 * ust_list_apps
396 *
397 * List traceable user-space application and fill an
398 * array of pids.
399 *
400 * Return size of the array.
401 */
402 static size_t ust_list_apps(pid_t **pids)
403 {
404 size_t size = 0;
405 struct ltt_traceable_app *iter = NULL;
406 pid_t *p;
407
408 if (traceable_app_count == 0) {
409 /* No dynamic allocation is done */
410 goto end;
411 }
412
413 p = malloc(sizeof(pid_t) * traceable_app_count);
414
415 /* TODO: Mutex needed to access this list */
416 cds_list_for_each_entry(iter, &ltt_traceable_app_list.head, list) {
417 p[size] = iter->pid;
418 size++;
419 }
420
421 *pids = p;
422
423 end:
424 return size;
425 }
426
427 /*
428 * copy_common_data
429 *
430 * Copy common data between lttcomm_lttng_msg and lttcomm_session_msg
431 */
432 static void copy_common_data(struct lttcomm_lttng_msg *llm, struct lttcomm_session_msg *lsm)
433 {
434 llm->cmd_type = lsm->cmd_type;
435 llm->pid = lsm->pid;
436 if (!uuid_is_null(lsm->session_id)) {
437 uuid_copy(llm->session_id, lsm->session_id);
438 }
439 strncpy(llm->trace_name, lsm->trace_name, sizeof(llm->trace_name));
440 }
441
442 /*
443 * process_client_msg
444 *
445 * This takes the lttcomm_session_msg struct and process the command requested
446 * by the client. It then creates response(s) and send it back to the
447 * given socket (sock).
448 *
449 * Return any error encountered or 0 for success.
450 */
451 static int process_client_msg(int sock, struct lttcomm_session_msg *lsm)
452 {
453 int ret;
454 struct lttcomm_lttng_msg llm;
455
456 /* Copy common data to identify the response
457 * on the lttng client side.
458 */
459 copy_common_data(&llm, lsm);
460
461 /* Default return code.
462 * In our world, everything is OK... right? ;)
463 */
464 llm.ret_code = LTTCOMM_OK;
465
466 /* Process by command type */
467 switch (lsm->cmd_type) {
468 case UST_LIST_APPS:
469 {
470 pid_t *pids;
471 llm.num_pckt = ust_list_apps(&pids);
472 if (llm.num_pckt == 0) {
473 ret = LTTCOMM_NO_APPS;
474 goto error;
475 }
476
477 /* Send all packets */
478 while (llm.num_pckt != 0) {
479 llm.u.list_apps.pid = pids[traceable_app_count - llm.num_pckt];
480 ret = send_unix_sock(sock, (void*) &llm, sizeof(llm));
481 if (ret < 0) {
482 goto send_error;
483 }
484 llm.num_pckt--;
485 }
486 /* Allocated array by ust_list_apps() */
487 free(pids);
488
489 break;
490 }
491 case LTTNG_LIST_SESSIONS:
492 {
493 struct ltt_session *iter = NULL;
494
495 llm.num_pckt = session_count;
496 if (llm.num_pckt == 0) {
497 ret = LTTCOMM_NO_SESS;
498 goto error;
499 }
500
501 cds_list_for_each_entry(iter, &ltt_session_list.head, list) {
502 uuid_unparse(iter->uuid, llm.u.list_sessions.uuid);
503 strncpy(llm.u.list_sessions.name, iter->name,
504 sizeof(llm.u.list_sessions.name));
505 ret = send_unix_sock(sock, (void*) &llm, sizeof(llm));
506 if (ret < 0) {
507 goto send_error;
508 }
509 llm.num_pckt--;
510 }
511
512 break;
513 }
514 default:
515 {
516 /* Undefined command */
517 ret = LTTCOMM_UND;
518 break;
519 }
520 }
521
522 return 0;
523
524 send_error:
525 return ret;
526
527 error:
528 /* Notify client of error */
529 llm.ret_code = ret;
530 send_unix_sock(sock, (void*) &llm, sizeof(llm));
531
532 return -1;
533 }
534
535 /*
536 * usage function on stderr
537 */
538 static void usage(void)
539 {
540 fprintf(stderr, "Usage:\n%s OPTIONS\n\nOptions:\n"
541 "\t-h, --help\t\tDisplay this usage.\n"
542 "\t-c, --client-sock PATH\t\tSpecify path for the client unix socket\n"
543 "\t-a, --apps-sock PATH\t\tSpecify path for apps unix socket.\n"
544 "\t-d, --daemonize\t\tStart as a daemon.\n"
545 "\t-g, --group NAME\t\tSpecify the tracing group name. (default: tracing)\n"
546 "\t-V, --version\t\tShow version number.\n"
547 "\t-S, --sig-parent\t\tSend SIGCHLD to parent pid to notify readiness.\n",
548 progname);
549 }
550
551 /*
552 * daemon argument parsing
553 */
554 static int parse_args(int argc, char **argv)
555 {
556 int c;
557
558 static struct option long_options[] = {
559 { "client-sock", 1, 0, 'c' },
560 { "apps-sock", 1, 0, 'a' },
561 { "daemonize", 0, 0, 'd' },
562 { "sig-parent", 0, 0, 'S' },
563 { "help", 0, 0, 'h' },
564 { "group", 1, 0, 'g' },
565 { "version", 0, 0, 'V' },
566 { NULL, 0, 0, 0 }
567 };
568
569 while (1) {
570 int option_index = 0;
571 c = getopt_long(argc, argv, "dhVS" "a:c:g:s:", long_options, &option_index);
572 if (c == -1) {
573 break;
574 }
575
576 switch (c) {
577 case 0:
578 fprintf(stderr, "option %s", long_options[option_index].name);
579 if (optarg) {
580 fprintf(stderr, " with arg %s\n", optarg);
581 }
582 break;
583 case 's':
584 snprintf(client_unix_sock_path, PATH_MAX, "%s", optarg);
585 break;
586 case 'a':
587 snprintf(apps_unix_sock_path, PATH_MAX, "%s", optarg);
588 break;
589 case 'd':
590 opt_daemon = 1;
591 break;
592 case 'g':
593 opt_tracing_group = strdup(optarg);
594 break;
595 case 'h':
596 usage();
597 exit(EXIT_FAILURE);
598 case 'V':
599 fprintf(stdout, "%s\n", VERSION);
600 exit(EXIT_SUCCESS);
601 case 'S':
602 opt_sig_parent = 1;
603 break;
604 default:
605 /* Unknown option or other error.
606 * Error is printed by getopt, just return */
607 return -1;
608 }
609 }
610
611 return 0;
612 }
613
614 /*
615 * init_daemon_socket
616 *
617 * Creates the two needed socket by the daemon.
618 * apps_socket - The communication socket for all UST apps.
619 * client_socket - The communication of the cli tool (lttng).
620 */
621 static int init_daemon_socket()
622 {
623 int ret = 0;
624 mode_t old_umask;
625
626 old_umask = umask(0);
627
628 /* Create client tool unix socket */
629 client_socket = lttcomm_create_unix_sock(client_unix_sock_path);
630 if (client_socket < 0) {
631 ret = -1;
632 goto end;
633 }
634
635 /* File permission MUST be 660 */
636 ret = chmod(client_unix_sock_path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
637 if (ret < 0) {
638 perror("chmod");
639 goto end;
640 }
641
642 /* Create the application unix socket */
643 apps_socket = lttcomm_create_unix_sock(apps_unix_sock_path);
644 if (apps_socket < 0) {
645 ret = -1;
646 goto end;
647 }
648
649 /* File permission MUST be 660 */
650 ret = chmod(apps_unix_sock_path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
651 if (ret < 0) {
652 perror("chmod");
653 goto end;
654 }
655
656 end:
657 umask(old_umask);
658 return ret;
659 }
660
661 /*
662 * check_existing_daemon
663 *
664 * Check if the global socket is available.
665 * If yes, error is returned.
666 */
667 static int check_existing_daemon()
668 {
669 int ret;
670
671 ret = access(client_unix_sock_path, F_OK);
672 if (ret == 0) {
673 ret = access(apps_unix_sock_path, F_OK);
674 }
675
676 return ret;
677 }
678
679 /*
680 * get_home_dir
681 *
682 * Return pointer to home directory path using
683 * the env variable HOME.
684 *
685 * Default : /tmp
686 */
687 static const char *get_home_dir(void)
688 {
689 const char *home_path;
690
691 if ((home_path = (const char *) getenv("HOME")) == NULL) {
692 home_path = default_home_dir;
693 }
694
695 return home_path;
696 }
697
698 /*
699 * set_socket_perms
700 *
701 * Set the tracing group gid onto the client socket.
702 */
703 static int set_socket_perms(void)
704 {
705 int ret;
706 struct group *grp;
707
708 /* Decide which group name to use */
709 (opt_tracing_group != NULL) ?
710 (grp = getgrnam(opt_tracing_group)) :
711 (grp = getgrnam(default_tracing_group));
712
713 if (grp == NULL) {
714 fprintf(stderr, "Missing tracing group. Aborting execution.\n");
715 ret = -1;
716 goto end;
717 }
718
719 ret = chown(client_unix_sock_path, 0, grp->gr_gid);
720 if (ret < 0) {
721 perror("chown");
722 }
723
724 end:
725 return ret;
726 }
727
728 /*
729 * set_signal_handler
730 *
731 * Setup signal handler for :
732 * SIGINT, SIGTERM, SIGPIPE
733 */
734 static int set_signal_handler(void)
735 {
736 int ret = 0;
737 struct sigaction sa;
738 sigset_t sigset;
739
740 if ((ret = sigemptyset(&sigset)) < 0) {
741 perror("sigemptyset");
742 return ret;
743 }
744
745 sa.sa_handler = sighandler;
746 sa.sa_mask = sigset;
747 sa.sa_flags = 0;
748 if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) {
749 perror("sigaction");
750 return ret;
751 }
752
753 if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) {
754 perror("sigaction");
755 return ret;
756 }
757
758 if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) {
759 perror("sigaction");
760 return ret;
761 }
762
763 return ret;
764 }
765
766 /**
767 * sighandler
768 *
769 * Signal handler for the daemon
770 */
771 static void sighandler(int sig)
772 {
773 switch (sig) {
774 case SIGPIPE:
775 case SIGINT:
776 case SIGTERM:
777 cleanup();
778 break;
779 default:
780 break;
781 }
782
783 exit(EXIT_SUCCESS);
784 }
785
786 /*
787 * cleanup
788 *
789 * Cleanup the daemon on exit
790 */
791 static void cleanup()
792 {
793 /* <fun> */
794 fprintf(stdout, "\n\n%c[%d;%dm*** assert failed *** ==> %c[%dm", 27,1,31,27,0);
795 fprintf(stdout, "%c[%d;%dm Matthew, BEET driven development works!%c[%dm\n",27,1,33,27,0);
796 /* </fun> */
797
798 unlink(client_unix_sock_path);
799 unlink(apps_unix_sock_path);
800 }
801
802 /*
803 * main
804 */
805 int main(int argc, char **argv)
806 {
807 int i;
808 int ret = 0;
809 void *status;
810 pthread_t threads[2];
811
812 /* Parse arguments */
813 progname = argv[0];
814 if ((ret = parse_args(argc, argv) < 0)) {
815 goto error;
816 }
817
818 /* Daemonize */
819 if (opt_daemon) {
820 ret = daemon(0, 0);
821 if (ret < 0) {
822 perror("daemon");
823 goto error;
824 }
825 }
826
827 /* Check if daemon is UID = 0 */
828 is_root = !getuid();
829
830 /* Set all sockets path */
831 if (is_root) {
832 if (strlen(apps_unix_sock_path) == 0) {
833 (snprintf(apps_unix_sock_path, PATH_MAX,
834 DEFAULT_GLOBAL_APPS_UNIX_SOCK));
835 }
836
837 if (strlen(client_unix_sock_path) == 0) {
838 (snprintf(client_unix_sock_path, PATH_MAX,
839 DEFAULT_GLOBAL_CLIENT_UNIX_SOCK));
840 }
841 } else {
842 if (strlen(apps_unix_sock_path) == 0) {
843 (snprintf(apps_unix_sock_path, PATH_MAX,
844 DEFAULT_HOME_APPS_UNIX_SOCK, get_home_dir()));
845 }
846
847 /* Set the cli tool unix socket path */
848 if (strlen(client_unix_sock_path) == 0) {
849 (snprintf(client_unix_sock_path, PATH_MAX,
850 DEFAULT_HOME_CLIENT_UNIX_SOCK, get_home_dir()));
851 }
852 }
853
854 /* See if daemon already exist. If any of the two
855 * socket needed by the daemon are present, this test fails
856 */
857 if ((ret = check_existing_daemon()) == 0) {
858 fprintf(stderr, "Already running daemon.\n");
859 goto error;
860 }
861
862 if (set_signal_handler() < 0) {
863 goto error;
864 }
865
866 /* Setup the two needed unix socket */
867 if (init_daemon_socket() < 0) {
868 goto error;
869 }
870
871 /* Set credentials to socket */
872 if (is_root && (set_socket_perms() < 0)) {
873 goto error;
874 }
875
876 /* Get parent pid if -S, --sig-parent is specified. */
877 if (opt_sig_parent) {
878 ppid = getppid();
879 }
880
881 while (1) {
882 /* Create thread to manage the client socket */
883 ret = pthread_create(&threads[0], NULL, thread_manage_clients, (void *) NULL);
884 if (ret != 0) {
885 perror("pthread_create");
886 goto error;
887 }
888
889 /* Create thread to manage application socket */
890 ret = pthread_create(&threads[1], NULL, thread_manage_apps, (void *) NULL);
891 if (ret != 0) {
892 perror("pthread_create");
893 goto error;
894 }
895
896 for (i = 0; i < 2; i++) {
897 ret = pthread_join(threads[i], &status);
898 if (ret != 0) {
899 perror("pthread_join");
900 goto error;
901 }
902 }
903 }
904
905 cleanup();
906 return 0;
907
908 error:
909 cleanup();
910
911 return EXIT_FAILURE;
912 }
This page took 0.083873 seconds and 4 git commands to generate.