1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_event.h>
10
11
12 static void ngx_destroy_cycle_pools(ngx_conf_t *conf);
13 static ngx_int_t ngx_cmp_sockaddr(struct sockaddr *sa1, struct sockaddr *sa2);
14 static ngx_int_t ngx_init_zone_pool(ngx_cycle_t *cycle,
15 ngx_shm_zone_t *shm_zone);
16 static ngx_int_t ngx_test_lockfile(u_char *file, ngx_log_t *log);
17 static void ngx_clean_old_cycles(ngx_event_t *ev);
18
19
20 volatile ngx_cycle_t *ngx_cycle;
21 ngx_array_t ngx_old_cycles;
22
23 static ngx_pool_t *ngx_temp_pool;
24 static ngx_event_t ngx_cleaner_event;
25
26 ngx_uint_t ngx_test_config;
27
28 #if (NGX_THREADS)
29 ngx_tls_key_t ngx_core_tls_key;
30 #endif
31
32
33 /* STUB NAME */
34 static ngx_connection_t dumb;
35 /* STUB */
36
37 static ngx_str_t error_log = ngx_string(NGX_ERROR_LOG_PATH);
38
39
40 ngx_cycle_t *
41 ngx_init_cycle(ngx_cycle_t *old_cycle)
42 {
43 void *rv;
44 char **senv, **env;
45 ngx_uint_t i, n;
46 ngx_log_t *log;
47 ngx_time_t *tp;
48 ngx_conf_t conf;
49 ngx_pool_t *pool;
50 ngx_cycle_t *cycle, **old;
51 ngx_shm_zone_t *shm_zone, *oshm_zone;
52 ngx_list_part_t *part, *opart;
53 ngx_open_file_t *file;
54 ngx_listening_t *ls, *nls;
55 ngx_core_conf_t *ccf, *old_ccf;
56 ngx_core_module_t *module;
57 char hostname[NGX_MAXHOSTNAMELEN];
58
59 ngx_timezone_update();
60
61 /* force localtime update with a new timezone */
62
63 tp = ngx_timeofday();
64 tp->sec = 0;
65
66 ngx_time_update(0, 0);
67
68
69 log = old_cycle->log;
70
71 pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
72 if (pool == NULL) {
73 return NULL;
74 }
75 pool->log = log;
76
77 cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
78 if (cycle == NULL) {
79 ngx_destroy_pool(pool);
80 return NULL;
81 }
82
83 cycle->pool = pool;
84 cycle->log = log;
85 cycle->new_log.log_level = NGX_LOG_ERR;
86 cycle->old_cycle = old_cycle;
87
88 cycle->conf_prefix.len = old_cycle->conf_prefix.len;
89 cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
90 if (cycle->conf_prefix.data == NULL) {
91 ngx_destroy_pool(pool);
92 return NULL;
93 }
94
95 cycle->prefix.len = old_cycle->prefix.len;
96 cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
97 if (cycle->prefix.data == NULL) {
98 ngx_destroy_pool(pool);
99 return NULL;
100 }
101
102 cycle->conf_file.len = old_cycle->conf_file.len;
103 cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
104 if (cycle->conf_file.data == NULL) {
105 ngx_destroy_pool(pool);
106 return NULL;
107 }
108 ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
109 old_cycle->conf_file.len + 1);
110
111 cycle->conf_param.len = old_cycle->conf_param.len;
112 cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
113 if (cycle->conf_param.data == NULL) {
114 ngx_destroy_pool(pool);
115 return NULL;
116 }
117
118
119 n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10;
120
121 cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
122 if (cycle->pathes.elts == NULL) {
123 ngx_destroy_pool(pool);
124 return NULL;
125 }
126
127 cycle->pathes.nelts = 0;
128 cycle->pathes.size = sizeof(ngx_path_t *);
129 cycle->pathes.nalloc = n;
130 cycle->pathes.pool = pool;
131
132
133 if (old_cycle->open_files.part.nelts) {
134 n = old_cycle->open_files.part.nelts;
135 for (part = old_cycle->open_files.part.next; part; part = part->next) {
136 n += part->nelts;
137 }
138
139 } else {
140 n = 20;
141 }
142
143 if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
144 != NGX_OK)
145 {
146 ngx_destroy_pool(pool);
147 return NULL;
148 }
149
150
151 if (old_cycle->shared_memory.part.nelts) {
152 n = old_cycle->shared_memory.part.nelts;
153 for (part = old_cycle->shared_memory.part.next; part; part = part->next)
154 {
155 n += part->nelts;
156 }
157
158 } else {
159 n = 1;
160 }
161
162 if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
163 != NGX_OK)
164 {
165 ngx_destroy_pool(pool);
166 return NULL;
167 }
168
169 n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
170
171 cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
172 if (cycle->listening.elts == NULL) {
173 ngx_destroy_pool(pool);
174 return NULL;
175 }
176
177 cycle->listening.nelts = 0;
178 cycle->listening.size = sizeof(ngx_listening_t);
179 cycle->listening.nalloc = n;
180 cycle->listening.pool = pool;
181
182
183 cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
184 if (cycle->conf_ctx == NULL) {
185 ngx_destroy_pool(pool);
186 return NULL;
187 }
188
189
190 if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
191 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
192 ngx_destroy_pool(pool);
193 return NULL;
194 }
195
196 /* on Linux gethostname() silently truncates name that does not fit */
197
198 hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
199 cycle->hostname.len = ngx_strlen(hostname);
200
201 cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
202 if (cycle->hostname.data == NULL) {
203 ngx_destroy_pool(pool);
204 return NULL;
205 }
206
207 ngx_memcpy(cycle->hostname.data, hostname, cycle->hostname.len);
208
209
210 for (i = 0; ngx_modules[i]; i++) {
211 if (ngx_modules[i]->type != NGX_CORE_MODULE) {
212 continue;
213 }
214
215 module = ngx_modules[i]->ctx;
216
217 if (module->create_conf) {
218 rv = module->create_conf(cycle);
219 if (rv == NULL) {
220 ngx_destroy_pool(pool);
221 return NULL;
222 }
223 cycle->conf_ctx[ngx_modules[i]->index] = rv;
224 }
225 }
226
227
228 senv = environ;
229
230
231 ngx_memzero(&conf, sizeof(ngx_conf_t));
232 /* STUB: init array ? */
233 conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
234 if (conf.args == NULL) {
235 ngx_destroy_pool(pool);
236 return NULL;
237 }
238
239 conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
240 if (conf.temp_pool == NULL) {
241 ngx_destroy_pool(pool);
242 return NULL;
243 }
244
245
246 conf.ctx = cycle->conf_ctx;
247 conf.cycle = cycle;
248 conf.pool = pool;
249 conf.log = log;
250 conf.module_type = NGX_CORE_MODULE;
251 conf.cmd_type = NGX_MAIN_CONF;
252
253 #if 0
254 log->log_level = NGX_LOG_DEBUG_ALL;
255 #endif
256
257 if (ngx_conf_param(&conf) != NGX_CONF_OK) {
258 environ = senv;
259 ngx_destroy_cycle_pools(&conf);
260 return NULL;
261 }
262
263 if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
264 environ = senv;
265 ngx_destroy_cycle_pools(&conf);
266 return NULL;
267 }
268
269 if (ngx_test_config) {
270 ngx_log_stderr(0, "the configuration file %s syntax is ok",
271 cycle->conf_file.data);
272 }
273
274 for (i = 0; ngx_modules[i]; i++) {
275 if (ngx_modules[i]->type != NGX_CORE_MODULE) {
276 continue;
277 }
278
279 module = ngx_modules[i]->ctx;
280
281 if (module->init_conf) {
282 if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
283 == NGX_CONF_ERROR)
284 {
285 environ = senv;
286 ngx_destroy_cycle_pools(&conf);
287 return NULL;
288 }
289 }
290 }
291
292 if (ngx_process == NGX_PROCESS_SIGNALLER) {
293 return cycle;
294 }
295
296 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
297
298 if (ngx_test_config) {
299
300 if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
301 goto failed;
302 }
303
304 } else if (!ngx_is_init_cycle(old_cycle)) {
305
306 /*
307 * we do not create the pid file in the first ngx_init_cycle() call
308 * because we need to write the demonized process pid
309 */
310
311 old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
312 ngx_core_module);
313 if (ccf->pid.len != old_ccf->pid.len
314 || ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
315 {
316 /* new pid file name */
317
318 if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
319 goto failed;
320 }
321
322 ngx_delete_pidfile(old_cycle);
323 }
324 }
325
326
327 if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
328 goto failed;
329 }
330
331
332 if (ngx_create_pathes(cycle, ccf->user) != NGX_OK) {
333 goto failed;
334 }
335
336
337 if (cycle->new_log.file == NULL) {
338 cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);
339 if (cycle->new_log.file == NULL) {
340 goto failed;
341 }
342 }
343
344 /* open the new files */
345
346 part = &cycle->open_files.part;
347 file = part->elts;
348
349 for (i = 0; /* void */ ; i++) {
350
351 if (i >= part->nelts) {
352 if (part->next == NULL) {
353 break;
354 }
355 part = part->next;
356 file = part->elts;
357 i = 0;
358 }
359
360 if (file[i].name.len == 0) {
361 continue;
362 }
363
364 file[i].fd = ngx_open_file(file[i].name.data,
365 NGX_FILE_APPEND,
366 NGX_FILE_CREATE_OR_OPEN,
367 NGX_FILE_DEFAULT_ACCESS);
368
369 ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
370 "log: %p %d \"%s\"",
371 &file[i], file[i].fd, file[i].name.data);
372
373 if (file[i].fd == NGX_INVALID_FILE) {
374 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
375 ngx_open_file_n " \"%s\" failed",
376 file[i].name.data);
377 goto failed;
378 }
379
380 #if !(NGX_WIN32)
381 if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
382 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
383 "fcntl(FD_CLOEXEC) \"%s\" failed",
384 file[i].name.data);
385 goto failed;
386 }
387 #endif
388 }
389
390 cycle->log = &cycle->new_log;
391 pool->log = &cycle->new_log;
392
393
394 /* create shared memory */
395
396 part = &cycle->shared_memory.part;
397 shm_zone = part->elts;
398
399 for (i = 0; /* void */ ; i++) {
400
401 if (i >= part->nelts) {
402 if (part->next == NULL) {
403 break;
404 }
405 part = part->next;
406 shm_zone = part->elts;
407 i = 0;
408 }
409
410 if (shm_zone[i].shm.size == 0) {
411 ngx_log_error(NGX_LOG_EMERG, log, 0,
412 "zero size shared memory zone \"%V\"",
413 &shm_zone[i].shm.name);
414 goto failed;
415 }
416
417 if (shm_zone[i].init == NULL) {
418 /* unused shared zone */
419 continue;
420 }
421
422 shm_zone[i].shm.log = cycle->log;
423
424 opart = &old_cycle->shared_memory.part;
425 oshm_zone = opart->elts;
426
427 for (n = 0; /* void */ ; n++) {
428
429 if (n >= opart->nelts) {
430 if (opart->next == NULL) {
431 break;
432 }
433 opart = opart->next;
434 oshm_zone = opart->elts;
435 n = 0;
436 }
437
438 if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
439 continue;
440 }
441
442 if (ngx_strncmp(shm_zone[i].shm.name.data,
443 oshm_zone[n].shm.name.data,
444 shm_zone[i].shm.name.len)
445 != 0)
446 {
447 continue;
448 }
449
450 if (shm_zone[i].shm.size == oshm_zone[n].shm.size) {
451 shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
452
453 if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
454 != NGX_OK)
455 {
456 goto failed;
457 }
458
459 goto shm_zone_found;
460 }
461
462 ngx_shm_free(&oshm_zone[n].shm);
463
464 break;
465 }
466
467 if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
468 goto failed;
469 }
470
471 if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
472 goto failed;
473 }
474
475 if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
476 goto failed;
477 }
478
479 shm_zone_found:
480
481 continue;
482 }
483
484
485 /* handle the listening sockets */
486
487 if (old_cycle->listening.nelts) {
488 ls = old_cycle->listening.elts;
489 for (i = 0; i < old_cycle->listening.nelts; i++) {
490 ls[i].remain = 0;
491 }
492
493 nls = cycle->listening.elts;
494 for (n = 0; n < cycle->listening.nelts; n++) {
495
496 for (i = 0; i < old_cycle->listening.nelts; i++) {
497 if (ls[i].ignore) {
498 continue;
499 }
500
501 if (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
502 {
503 nls[n].fd = ls[i].fd;
504 nls[n].previous = &ls[i];
505 ls[i].remain = 1;
506
507 if (ls[n].backlog != nls[i].backlog) {
508 nls[n].listen = 1;
509 }
510
511 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
512
513 /*
514 * FreeBSD, except the most recent versions,
515 * could not remove accept filter
516 */
517 nls[n].deferred_accept = ls[i].deferred_accept;
518
519 if (ls[i].accept_filter && nls[n].accept_filter) {
520 if (ngx_strcmp(ls[i].accept_filter,
521 nls[n].accept_filter)
522 != 0)
523 {
524 nls[n].delete_deferred = 1;
525 nls[n].add_deferred = 1;
526 }
527
528 } else if (ls[i].accept_filter) {
529 nls[n].delete_deferred = 1;
530
531 } else if (nls[n].accept_filter) {
532 nls[n].add_deferred = 1;
533 }
534 #endif
535
536 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
537
538 if (ls[n].deferred_accept && !nls[n].deferred_accept) {
539 nls[n].delete_deferred = 1;
540
541 } else if (ls[i].deferred_accept != nls[n].deferred_accept)
542 {
543 nls[n].add_deferred = 1;
544 }
545 #endif
546 break;
547 }
548 }
549
550 if (nls[n].fd == -1) {
551 nls[n].open = 1;
552 }
553 }
554
555 } else {
556 ls = cycle->listening.elts;
557 for (i = 0; i < cycle->listening.nelts; i++) {
558 ls[i].open = 1;
559 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
560 if (ls[i].accept_filter) {
561 ls[i].add_deferred = 1;
562 }
563 #endif
564 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
565 if (ls[i].deferred_accept) {
566 ls[i].add_deferred = 1;
567 }
568 #endif
569 }
570 }
571
572 if (ngx_open_listening_sockets(cycle) != NGX_OK) {
573 goto failed;
574 }
575
576 if (!ngx_test_config) {
577 ngx_configure_listening_sockets(cycle);
578 }
579
580
581 /* commit the new cycle configuration */
582
583 if (!ngx_use_stderr && cycle->log->file->fd != ngx_stderr) {
584
585 if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
586 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
587 ngx_set_stderr_n " failed");
588 }
589 }
590
591 pool->log = cycle->log;
592
593 for (i = 0; ngx_modules[i]; i++) {
594 if (ngx_modules[i]->init_module) {
595 if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
596 /* fatal */
597 exit(1);
598 }
599 }
600 }
601
602
603 /* close and delete stuff that lefts from an old cycle */
604
605 /* free the unnecessary shared memory */
606
607 opart = &old_cycle->shared_memory.part;
608 oshm_zone = opart->elts;
609
610 for (i = 0; /* void */ ; i++) {
611
612 if (i >= opart->nelts) {
613 if (opart->next == NULL) {
614 goto old_shm_zone_done;
615 }
616 opart = opart->next;
617 oshm_zone = opart->elts;
618 i = 0;
619 }
620
621 part = &cycle->shared_memory.part;
622 shm_zone = part->elts;
623
624 for (n = 0; /* void */ ; n++) {
625
626 if (n >= part->nelts) {
627 if (part->next == NULL) {
628 break;
629 }
630 part = part->next;
631 shm_zone = part->elts;
632 n = 0;
633 }
634
635 if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
636 && ngx_strncmp(oshm_zone[i].shm.name.data,
637 shm_zone[n].shm.name.data,
638 oshm_zone[i].shm.name.len)
639 == 0)
640 {
641 goto live_shm_zone;
642 }
643 }
644
645 ngx_shm_free(&oshm_zone[i].shm);
646
647 live_shm_zone:
648
649 continue;
650 }
651
652 old_shm_zone_done:
653
654
655 /* close the unnecessary listening sockets */
656
657 ls = old_cycle->listening.elts;
658 for (i = 0; i < old_cycle->listening.nelts; i++) {
659
660 if (ls[i].remain || ls[i].fd == -1) {
661 continue;
662 }
663
664 if (ngx_close_socket(ls[i].fd) == -1) {
665 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
666 ngx_close_socket_n " listening socket on %V failed",
667 &ls[i].addr_text);
668 }
669 }
670
671
672 /* close the unnecessary open files */
673
674 part = &old_cycle->open_files.part;
675 file = part->elts;
676
677 for (i = 0; /* void */ ; i++) {
678
679 if (i >= part->nelts) {
680 if (part->next == NULL) {
681 break;
682 }
683 part = part->next;
684 file = part->elts;
685 i = 0;
686 }
687
688 if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
689 continue;
690 }
691
692 if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
693 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
694 ngx_close_file_n " \"%s\" failed",
695 file[i].name.data);
696 }
697 }
698
699 ngx_destroy_pool(conf.temp_pool);
700
701 if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
702
703 /*
704 * perl_destruct() frees environ, if it is not the same as it was at
705 * perl_construct() time, therefore we save the previous cycle
706 * environment before ngx_conf_parse() where it will be changed.
707 */
708
709 env = environ;
710 environ = senv;
711
712 ngx_destroy_pool(old_cycle->pool);
713 cycle->old_cycle = NULL;
714
715 environ = env;
716
717 return cycle;
718 }
719
720
721 if (ngx_temp_pool == NULL) {
722 ngx_temp_pool = ngx_create_pool(128, cycle->log);
723 if (ngx_temp_pool == NULL) {
724 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
725 "can not create ngx_temp_pool");
726 exit(1);
727 }
728
729 n = 10;
730 ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
731 n * sizeof(ngx_cycle_t *));
732 if (ngx_old_cycles.elts == NULL) {
733 exit(1);
734 }
735 ngx_old_cycles.nelts = 0;
736 ngx_old_cycles.size = sizeof(ngx_cycle_t *);
737 ngx_old_cycles.nalloc = n;
738 ngx_old_cycles.pool = ngx_temp_pool;
739
740 ngx_cleaner_event.handler = ngx_clean_old_cycles;
741 ngx_cleaner_event.log = cycle->log;
742 ngx_cleaner_event.data = &dumb;
743 dumb.fd = (ngx_socket_t) -1;
744 }
745
746 ngx_temp_pool->log = cycle->log;
747
748 old = ngx_array_push(&ngx_old_cycles);
749 if (old == NULL) {
750 exit(1);
751 }
752 *old = old_cycle;
753
754 if (!ngx_cleaner_event.timer_set) {
755 ngx_add_timer(&ngx_cleaner_event, 30000);
756 ngx_cleaner_event.timer_set = 1;
757 }
758
759 return cycle;
760
761
762 failed:
763
764 if (!ngx_is_init_cycle(old_cycle)) {
765 old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
766 ngx_core_module);
767 if (old_ccf->environment) {
768 environ = old_ccf->environment;
769 }
770 }
771
772 /* rollback the new cycle configuration */
773
774 part = &cycle->open_files.part;
775 file = part->elts;
776
777 for (i = 0; /* void */ ; i++) {
778
779 if (i >= part->nelts) {
780 if (part->next == NULL) {
781 break;
782 }
783 part = part->next;
784 file = part->elts;
785 i = 0;
786 }
787
788 if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
789 continue;
790 }
791
792 if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
793 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
794 ngx_close_file_n " \"%s\" failed",
795 file[i].name.data);
796 }
797 }
798
799 if (ngx_test_config) {
800 ngx_destroy_cycle_pools(&conf);
801 return NULL;
802 }
803
804 ls = cycle->listening.elts;
805 for (i = 0; i < cycle->listening.nelts; i++) {
806 if (ls[i].fd == -1 || !ls[i].open) {
807 continue;
808 }
809
810 if (ngx_close_socket(ls[i].fd) == -1) {
811 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
812 ngx_close_socket_n " %V failed",
813 &ls[i].addr_text);
814 }
815 }
816
817 ngx_destroy_cycle_pools(&conf);
818
819 return NULL;
820 }
821
822
823 static void
824 ngx_destroy_cycle_pools(ngx_conf_t *conf)
825 {
826 ngx_destroy_pool(conf->temp_pool);
827 ngx_destroy_pool(conf->pool);
828 }
829
830
831 static ngx_int_t
832 ngx_cmp_sockaddr(struct sockaddr *sa1, struct sockaddr *sa2)
833 {
834 struct sockaddr_in *sin1, *sin2;
835 #if (NGX_HAVE_INET6)
836 struct sockaddr_in6 *sin61, *sin62;
837 #endif
838
839 if (sa1->sa_family != sa2->sa_family) {
840 return NGX_DECLINED;
841 }
842
843 switch (sa1->sa_family) {
844
845 #if (NGX_HAVE_INET6)
846 case AF_INET6:
847 sin61 = (struct sockaddr_in6 *) sa1;
848 sin62 = (struct sockaddr_in6 *) sa2;
849
850 if (sin61->sin6_port != sin61->sin6_port) {
851 return NGX_DECLINED;
852 }
853
854 if (ngx_memcmp(&sin61->sin6_addr, &sin62->sin6_addr, 16) != 0) {
855 return NGX_DECLINED;
856 }
857
858 break;
859 #endif
860
861 default: /* AF_INET */
862
863 sin1 = (struct sockaddr_in *) sa1;
864 sin2 = (struct sockaddr_in *) sa2;
865
866 if (sin1->sin_port != sin2->sin_port) {
867 return NGX_DECLINED;
868 }
869
870 if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr) {
871 return NGX_DECLINED;
872 }
873
874 break;
875 }
876
877 return NGX_OK;
878 }
879
880
881 static ngx_int_t
882 ngx_init_zone_pool(ngx_cycle_t *cycle, ngx_shm_zone_t *zn)
883 {
884 u_char *file;
885 ngx_slab_pool_t *sp;
886
887 sp = (ngx_slab_pool_t *) zn->shm.addr;
888
889 if (zn->shm.exists) {
890
891 if (sp == sp->addr) {
892 return NGX_OK;
893 }
894
895 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
896 "shared zone \"%V\" has no equal addresses: %p vs %p",
897 &zn->shm.name, sp->addr, sp);
898 return NGX_ERROR;
899 }
900
901 sp->end = zn->shm.addr + zn->shm.size;
902 sp->min_shift = 3;
903 sp->addr = zn->shm.addr;
904
905 #if (NGX_HAVE_ATOMIC_OPS)
906
907 file = NULL;
908
909 #else
910
911 file = ngx_pnalloc(cycle->pool, cycle->lock_file.len + zn->shm.name.len);
912 if (file == NULL) {
913 return NGX_ERROR;
914 }
915
916 (void) ngx_sprintf(file, "%V%V%Z", &cycle->lock_file, &zn->shm.name);
917
918 #endif
919
920 if (ngx_shmtx_create(&sp->mutex, (void *) &sp->lock, file) != NGX_OK) {
921 return NGX_ERROR;
922 }
923
924 ngx_slab_init(sp);
925
926 return NGX_OK;
927 }
928
929
930 ngx_int_t
931 ngx_create_pidfile(ngx_str_t *name, ngx_log_t *log)
932 {
933 size_t len;
934 ngx_uint_t create;
935 ngx_file_t file;
936 u_char pid[NGX_INT64_LEN + 2];
937
938 if (ngx_process > NGX_PROCESS_MASTER) {
939 return NGX_OK;
940 }
941
942 ngx_memzero(&file, sizeof(ngx_file_t));
943
944 file.name = *name;
945 file.log = log;
946
947 create = ngx_test_config ? NGX_FILE_CREATE_OR_OPEN : NGX_FILE_TRUNCATE;
948
949 file.fd = ngx_open_file(file.name.data, NGX_FILE_RDWR,
950 create, NGX_FILE_DEFAULT_ACCESS);
951
952 if (file.fd == NGX_INVALID_FILE) {
953 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
954 ngx_open_file_n " \"%s\" failed", file.name.data);
955 return NGX_ERROR;
956 }
957
958 if (!ngx_test_config) {
959 len = ngx_snprintf(pid, NGX_INT64_LEN + 2, "%P%N", ngx_pid) - pid;
960
961 if (ngx_write_file(&file, pid, len, 0) == NGX_ERROR) {
962 return NGX_ERROR;
963 }
964 }
965
966 if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
967 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
968 ngx_close_file_n " \"%s\" failed", file.name.data);
969 }
970
971 return NGX_OK;
972 }
973
974
975 void
976 ngx_delete_pidfile(ngx_cycle_t *cycle)
977 {
978 u_char *name;
979 ngx_core_conf_t *ccf;
980
981 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
982
983 name = ngx_new_binary ? ccf->oldpid.data : ccf->pid.data;
984
985 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
986 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
987 ngx_delete_file_n " \"%s\" failed", name);
988 }
989 }
990
991
992 ngx_int_t
993 ngx_signal_process(ngx_cycle_t *cycle, char *sig)
994 {
995 ssize_t n;
996 ngx_int_t pid;
997 ngx_file_t file;
998 ngx_core_conf_t *ccf;
999 u_char buf[NGX_INT64_LEN + 2];
1000
1001 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "signal process started");
1002
1003 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
1004
1005 file.name = ccf->pid;
1006 file.log = cycle->log;
1007
1008 file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY,
1009 NGX_FILE_OPEN, NGX_FILE_DEFAULT_ACCESS);
1010
1011 if (file.fd == NGX_INVALID_FILE) {
1012 ngx_log_error(NGX_LOG_ERR, cycle->log, ngx_errno,
1013 ngx_open_file_n " \"%s\" failed", file.name.data);
1014 return 1;
1015 }
1016
1017 n = ngx_read_file(&file, buf, NGX_INT64_LEN + 2, 0);
1018
1019 if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
1020 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
1021 ngx_close_file_n " \"%s\" failed", file.name.data);
1022 }
1023
1024 if (n == NGX_ERROR) {
1025 return 1;
1026 }
1027
1028 while (n-- && (buf[n] == CR || buf[n] == LF)) { /* void */ }
1029
1030 pid = ngx_atoi(buf, ++n);
1031
1032 if (pid == NGX_ERROR) {
1033 ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
1034 "invalid PID number \"%*s\" in \"%s\"",
1035 n, buf, file.name.data);
1036 return 1;
1037 }
1038
1039 return ngx_os_signal_process(cycle, sig, pid);
1040
1041 }
1042
1043
1044 static ngx_int_t
1045 ngx_test_lockfile(u_char *file, ngx_log_t *log)
1046 {
1047 #if !(NGX_HAVE_ATOMIC_OPS)
1048 ngx_fd_t fd;
1049
1050 fd = ngx_open_file(file, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN,
1051 NGX_FILE_DEFAULT_ACCESS);
1052
1053 if (fd == NGX_INVALID_FILE) {
1054 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
1055 ngx_open_file_n " \"%s\" failed", file);
1056 return NGX_ERROR;
1057 }
1058
1059 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
1060 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
1061 ngx_close_file_n " \"%s\" failed", file);
1062 }
1063
1064 if (ngx_delete_file(file) == NGX_FILE_ERROR) {
1065 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
1066 ngx_delete_file_n " \"%s\" failed", file);
1067 }
1068
1069 #endif
1070
1071 return NGX_OK;
1072 }
1073
1074
1075 void
1076 ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user)
1077 {
1078 ssize_t n, len;
1079 ngx_fd_t fd;
1080 ngx_uint_t i;
1081 ngx_list_part_t *part;
1082 ngx_open_file_t *file;
1083
1084 part = &cycle->open_files.part;
1085 file = part->elts;
1086
1087 for (i = 0; /* void */ ; i++) {
1088
1089 if (i >= part->nelts) {
1090 if (part->next == NULL) {
1091 break;
1092 }
1093 part = part->next;
1094 file = part->elts;
1095 i = 0;
1096 }
1097
1098 if (file[i].name.len == 0) {
1099 continue;
1100 }
1101
1102 len = file[i].pos - file[i].buffer;
1103
1104 if (file[i].buffer && len != 0) {
1105
1106 n = ngx_write_fd(file[i].fd, file[i].buffer, len);
1107
1108 if (n == NGX_FILE_ERROR) {
1109 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
1110 ngx_write_fd_n " to \"%s\" failed",
1111 file[i].name.data);
1112
1113 } else if (n != len) {
1114 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
1115 ngx_write_fd_n " to \"%s\" was incomplete: %z of %uz",
1116 file[i].name.data, n, len);
1117 }
1118
1119 file[i].pos = file[i].buffer;
1120 }
1121
1122 fd = ngx_open_file(file[i].name.data, NGX_FILE_APPEND,
1123 NGX_FILE_CREATE_OR_OPEN, NGX_FILE_DEFAULT_ACCESS);
1124
1125 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
1126 "reopen file \"%s\", old:%d new:%d",
1127 file[i].name.data, file[i].fd, fd);
1128
1129 if (fd == NGX_INVALID_FILE) {
1130 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1131 ngx_open_file_n " \"%s\" failed", file[i].name.data);
1132 continue;
1133 }
1134
1135 #if !(NGX_WIN32)
1136 if (user != (ngx_uid_t) NGX_CONF_UNSET_UINT) {
1137 ngx_file_info_t fi;
1138
1139 if (ngx_file_info((const char *) file[i].name.data, &fi)
1140 == NGX_FILE_ERROR)
1141 {
1142 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1143 ngx_file_info_n " \"%s\" failed",
1144 file[i].name.data);
1145
1146 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
1147 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1148 ngx_close_file_n " \"%s\" failed",
1149 file[i].name.data);
1150 }
1151 }
1152
1153 if (fi.st_uid != user) {
1154 if (chown((const char *) file[i].name.data, user, -1) == -1) {
1155 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1156 "chown(\"%s\", %d) failed",
1157 file[i].name.data, user);
1158
1159 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
1160 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1161 ngx_close_file_n " \"%s\" failed",
1162 file[i].name.data);
1163 }
1164 }
1165 }
1166
1167 if ((fi.st_mode & (S_IRUSR|S_IWUSR)) != (S_IRUSR|S_IWUSR)) {
1168
1169 fi.st_mode |= (S_IRUSR|S_IWUSR);
1170
1171 if (chmod((const char *) file[i].name.data, fi.st_mode) == -1) {
1172 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1173 "chmod() \"%s\" failed", file[i].name.data);
1174
1175 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
1176 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1177 ngx_close_file_n " \"%s\" failed",
1178 file[i].name.data);
1179 }
1180 }
1181 }
1182 }
1183
1184 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
1185 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1186 "fcntl(FD_CLOEXEC) \"%s\" failed",
1187 file[i].name.data);
1188
1189 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
1190 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1191 ngx_close_file_n " \"%s\" failed",
1192 file[i].name.data);
1193 }
1194
1195 continue;
1196 }
1197 #endif
1198
1199 if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
1200 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1201 ngx_close_file_n " \"%s\" failed",
1202 file[i].name.data);
1203 }
1204
1205 file[i].fd = fd;
1206 }
1207
1208 #if !(NGX_WIN32)
1209
1210 if (cycle->log->file->fd != STDERR_FILENO) {
1211 if (dup2(cycle->log->file->fd, STDERR_FILENO) == -1) {
1212 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
1213 "dup2(STDERR) failed");
1214 }
1215 }
1216
1217 #endif
1218 }
1219
1220
1221 ngx_shm_zone_t *
1222 ngx_shared_memory_add(ngx_conf_t *cf, ngx_str_t *name, size_t size, void *tag)
1223 {
1224 ngx_uint_t i;
1225 ngx_shm_zone_t *shm_zone;
1226 ngx_list_part_t *part;
1227
1228 part = &cf->cycle->shared_memory.part;
1229 shm_zone = part->elts;
1230
1231 for (i = 0; /* void */ ; i++) {
1232
1233 if (i >= part->nelts) {
1234 if (part->next == NULL) {
1235 break;
1236 }
1237 part = part->next;
1238 shm_zone = part->elts;
1239 i = 0;
1240 }
1241
1242 if (name->len != shm_zone[i].shm.name.len) {
1243 continue;
1244 }
1245
1246 if (ngx_strncmp(name->data, shm_zone[i].shm.name.data, name->len)
1247 != 0)
1248 {
1249 continue;
1250 }
1251
1252 if (size && size != shm_zone[i].shm.size) {
1253 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1254 "the size %uz of shared memory zone \"%V\" "
1255 "conflicts with already declared size %uz",
1256 size, &shm_zone[i].shm.name, shm_zone[i].shm.size);
1257 return NULL;
1258 }
1259
1260 if (tag != shm_zone[i].tag) {
1261 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
1262 "the shared memory zone \"%V\" is "
1263 "already declared for a different use",
1264 &shm_zone[i].shm.name);
1265 return NULL;
1266 }
1267
1268 return &shm_zone[i];
1269 }
1270
1271 shm_zone = ngx_list_push(&cf->cycle->shared_memory);
1272
1273 if (shm_zone == NULL) {
1274 return NULL;
1275 }
1276
1277 shm_zone->data = NULL;
1278 shm_zone->shm.log = cf->cycle->log;
1279 shm_zone->shm.size = size;
1280 shm_zone->shm.name = *name;
1281 shm_zone->shm.exists = 0;
1282 shm_zone->init = NULL;
1283 shm_zone->tag = tag;
1284
1285 return shm_zone;
1286 }
1287
1288
1289 static void
1290 ngx_clean_old_cycles(ngx_event_t *ev)
1291 {
1292 ngx_uint_t i, n, found, live;
1293 ngx_log_t *log;
1294 ngx_cycle_t **cycle;
1295
1296 log = ngx_cycle->log;
1297 ngx_temp_pool->log = log;
1298
1299 ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "clean old cycles");
1300
1301 live = 0;
1302
1303 cycle = ngx_old_cycles.elts;
1304 for (i = 0; i < ngx_old_cycles.nelts; i++) {
1305
1306 if (cycle[i] == NULL) {
1307 continue;
1308 }
1309
1310 found = 0;
1311
1312 for (n = 0; n < cycle[i]->connection_n; n++) {
1313 if (cycle[i]->connections[n].fd != (ngx_socket_t) -1) {
1314 found = 1;
1315
1316 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "live fd:%d", n);
1317
1318 break;
1319 }
1320 }
1321
1322 if (found) {
1323 live = 1;
1324 continue;
1325 }
1326
1327 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "clean old cycle: %d", i);
1328
1329 ngx_destroy_pool(cycle[i]->pool);
1330 cycle[i] = NULL;
1331 }
1332
1333 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "old cycles status: %d", live);
1334
1335 if (live) {
1336 ngx_add_timer(ev, 30000);
1337
1338 } else {
1339 ngx_destroy_pool(ngx_temp_pool);
1340 ngx_temp_pool = NULL;
1341 ngx_old_cycles.nelts = 0;
1342 }
1343 }
1344
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.