| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_event.h> |
| |
| |
| static void ngx_destroy_cycle_pools(ngx_conf_t *conf); |
| static ngx_int_t ngx_init_zone_pool(ngx_cycle_t *cycle, |
| ngx_shm_zone_t *shm_zone); |
| static ngx_int_t ngx_test_lockfile(u_char *file, ngx_log_t *log); |
| static void ngx_clean_old_cycles(ngx_event_t *ev); |
| static void ngx_shutdown_timer_handler(ngx_event_t *ev); |
| |
| |
| volatile ngx_cycle_t *ngx_cycle; |
| ngx_array_t ngx_old_cycles; |
| |
| static ngx_pool_t *ngx_temp_pool; |
| static ngx_event_t ngx_cleaner_event; |
| static ngx_event_t ngx_shutdown_event; |
| |
| ngx_uint_t ngx_test_config; |
| ngx_uint_t ngx_dump_config; |
| ngx_uint_t ngx_quiet_mode; |
| |
| |
| /* STUB NAME */ |
| static ngx_connection_t dumb; |
| /* STUB */ |
| |
| |
| ngx_cycle_t * |
| ngx_init_cycle(ngx_cycle_t *old_cycle) |
| { |
| void *rv; |
| char **senv; |
| ngx_uint_t i, n; |
| ngx_log_t *log; |
| ngx_time_t *tp; |
| ngx_conf_t conf; |
| ngx_pool_t *pool; |
| ngx_cycle_t *cycle, **old; |
| ngx_shm_zone_t *shm_zone, *oshm_zone; |
| ngx_list_part_t *part, *opart; |
| ngx_open_file_t *file; |
| ngx_listening_t *ls, *nls; |
| ngx_core_conf_t *ccf, *old_ccf; |
| ngx_core_module_t *module; |
| char hostname[NGX_MAXHOSTNAMELEN]; |
| |
| ngx_timezone_update(); |
| |
| /* force localtime update with a new timezone */ |
| |
| tp = ngx_timeofday(); |
| tp->sec = 0; |
| |
| ngx_time_update(); |
| |
| |
| log = old_cycle->log; |
| |
| pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log); |
| if (pool == NULL) { |
| return NULL; |
| } |
| pool->log = log; |
| |
| cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t)); |
| if (cycle == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| cycle->pool = pool; |
| cycle->log = log; |
| cycle->old_cycle = old_cycle; |
| |
| cycle->conf_prefix.len = old_cycle->conf_prefix.len; |
| cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix); |
| if (cycle->conf_prefix.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| cycle->prefix.len = old_cycle->prefix.len; |
| cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix); |
| if (cycle->prefix.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| cycle->error_log.len = old_cycle->error_log.len; |
| cycle->error_log.data = ngx_pnalloc(pool, old_cycle->error_log.len + 1); |
| if (cycle->error_log.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| ngx_cpystrn(cycle->error_log.data, old_cycle->error_log.data, |
| old_cycle->error_log.len + 1); |
| |
| cycle->conf_file.len = old_cycle->conf_file.len; |
| cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1); |
| if (cycle->conf_file.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data, |
| old_cycle->conf_file.len + 1); |
| |
| cycle->conf_param.len = old_cycle->conf_param.len; |
| cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param); |
| if (cycle->conf_param.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| |
| n = old_cycle->paths.nelts ? old_cycle->paths.nelts : 10; |
| |
| if (ngx_array_init(&cycle->paths, pool, n, sizeof(ngx_path_t *)) |
| != NGX_OK) |
| { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| ngx_memzero(cycle->paths.elts, n * sizeof(ngx_path_t *)); |
| |
| |
| if (ngx_array_init(&cycle->config_dump, pool, 1, sizeof(ngx_conf_dump_t)) |
| != NGX_OK) |
| { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| ngx_rbtree_init(&cycle->config_dump_rbtree, &cycle->config_dump_sentinel, |
| ngx_str_rbtree_insert_value); |
| |
| if (old_cycle->open_files.part.nelts) { |
| n = old_cycle->open_files.part.nelts; |
| for (part = old_cycle->open_files.part.next; part; part = part->next) { |
| n += part->nelts; |
| } |
| |
| } else { |
| n = 20; |
| } |
| |
| if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t)) |
| != NGX_OK) |
| { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| |
| if (old_cycle->shared_memory.part.nelts) { |
| n = old_cycle->shared_memory.part.nelts; |
| for (part = old_cycle->shared_memory.part.next; part; part = part->next) |
| { |
| n += part->nelts; |
| } |
| |
| } else { |
| n = 1; |
| } |
| |
| if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t)) |
| != NGX_OK) |
| { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10; |
| |
| if (ngx_array_init(&cycle->listening, pool, n, sizeof(ngx_listening_t)) |
| != NGX_OK) |
| { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| ngx_memzero(cycle->listening.elts, n * sizeof(ngx_listening_t)); |
| |
| |
| ngx_queue_init(&cycle->reusable_connections_queue); |
| |
| |
| cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *)); |
| if (cycle->conf_ctx == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| |
| if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed"); |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| /* on Linux gethostname() silently truncates name that does not fit */ |
| |
| hostname[NGX_MAXHOSTNAMELEN - 1] = '\0'; |
| cycle->hostname.len = ngx_strlen(hostname); |
| |
| cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len); |
| if (cycle->hostname.data == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len); |
| |
| |
| if (ngx_cycle_modules(cycle) != NGX_OK) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| |
| for (i = 0; cycle->modules[i]; i++) { |
| if (cycle->modules[i]->type != NGX_CORE_MODULE) { |
| continue; |
| } |
| |
| module = cycle->modules[i]->ctx; |
| |
| if (module->create_conf) { |
| rv = module->create_conf(cycle); |
| if (rv == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| cycle->conf_ctx[cycle->modules[i]->index] = rv; |
| } |
| } |
| |
| |
| senv = environ; |
| |
| |
| ngx_memzero(&conf, sizeof(ngx_conf_t)); |
| /* STUB: init array ? */ |
| conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t)); |
| if (conf.args == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log); |
| if (conf.temp_pool == NULL) { |
| ngx_destroy_pool(pool); |
| return NULL; |
| } |
| |
| |
| conf.ctx = cycle->conf_ctx; |
| conf.cycle = cycle; |
| conf.pool = pool; |
| conf.log = log; |
| conf.module_type = NGX_CORE_MODULE; |
| conf.cmd_type = NGX_MAIN_CONF; |
| |
| #if 0 |
| log->log_level = NGX_LOG_DEBUG_ALL; |
| #endif |
| |
| if (ngx_conf_param(&conf) != NGX_CONF_OK) { |
| environ = senv; |
| ngx_destroy_cycle_pools(&conf); |
| return NULL; |
| } |
| |
| if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) { |
| environ = senv; |
| ngx_destroy_cycle_pools(&conf); |
| return NULL; |
| } |
| |
| if (ngx_test_config && !ngx_quiet_mode) { |
| ngx_log_stderr(0, "the configuration file %s syntax is ok", |
| cycle->conf_file.data); |
| } |
| |
| for (i = 0; cycle->modules[i]; i++) { |
| if (cycle->modules[i]->type != NGX_CORE_MODULE) { |
| continue; |
| } |
| |
| module = cycle->modules[i]->ctx; |
| |
| if (module->init_conf) { |
| if (module->init_conf(cycle, |
| cycle->conf_ctx[cycle->modules[i]->index]) |
| == NGX_CONF_ERROR) |
| { |
| environ = senv; |
| ngx_destroy_cycle_pools(&conf); |
| return NULL; |
| } |
| } |
| } |
| |
| if (ngx_process == NGX_PROCESS_SIGNALLER) { |
| return cycle; |
| } |
| |
| ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); |
| |
| if (ngx_test_config) { |
| |
| if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) { |
| goto failed; |
| } |
| |
| } else if (!ngx_is_init_cycle(old_cycle)) { |
| |
| /* |
| * we do not create the pid file in the first ngx_init_cycle() call |
| * because we need to write the demonized process pid |
| */ |
| |
| old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx, |
| ngx_core_module); |
| if (ccf->pid.len != old_ccf->pid.len |
| || ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0) |
| { |
| /* new pid file name */ |
| |
| if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) { |
| goto failed; |
| } |
| |
| ngx_delete_pidfile(old_cycle); |
| } |
| } |
| |
| |
| if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) { |
| goto failed; |
| } |
| |
| |
| if (ngx_create_paths(cycle, ccf->user) != NGX_OK) { |
| goto failed; |
| } |
| |
| |
| if (ngx_log_open_default(cycle) != NGX_OK) { |
| goto failed; |
| } |
| |
| /* open the new files */ |
| |
| part = &cycle->open_files.part; |
| file = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| file = part->elts; |
| i = 0; |
| } |
| |
| if (file[i].name.len == 0) { |
| continue; |
| } |
| |
| file[i].fd = ngx_open_file(file[i].name.data, |
| NGX_FILE_APPEND, |
| NGX_FILE_CREATE_OR_OPEN, |
| NGX_FILE_DEFAULT_ACCESS); |
| |
| ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0, |
| "log: %p %d \"%s\"", |
| &file[i], file[i].fd, file[i].name.data); |
| |
| if (file[i].fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", |
| file[i].name.data); |
| goto failed; |
| } |
| |
| #if !(NGX_WIN32) |
| if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| "fcntl(FD_CLOEXEC) \"%s\" failed", |
| file[i].name.data); |
| goto failed; |
| } |
| #endif |
| } |
| |
| cycle->log = &cycle->new_log; |
| pool->log = &cycle->new_log; |
| |
| |
| /* create shared memory */ |
| |
| part = &cycle->shared_memory.part; |
| shm_zone = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| shm_zone = part->elts; |
| i = 0; |
| } |
| |
| if (shm_zone[i].shm.size == 0) { |
| ngx_log_error(NGX_LOG_EMERG, log, 0, |
| "zero size shared memory zone \"%V\"", |
| &shm_zone[i].shm.name); |
| goto failed; |
| } |
| |
| shm_zone[i].shm.log = cycle->log; |
| |
| opart = &old_cycle->shared_memory.part; |
| oshm_zone = opart->elts; |
| |
| for (n = 0; /* void */ ; n++) { |
| |
| if (n >= opart->nelts) { |
| if (opart->next == NULL) { |
| break; |
| } |
| opart = opart->next; |
| oshm_zone = opart->elts; |
| n = 0; |
| } |
| |
| if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) { |
| continue; |
| } |
| |
| if (ngx_strncmp(shm_zone[i].shm.name.data, |
| oshm_zone[n].shm.name.data, |
| shm_zone[i].shm.name.len) |
| != 0) |
| { |
| continue; |
| } |
| |
| if (shm_zone[i].tag == oshm_zone[n].tag |
| && shm_zone[i].shm.size == oshm_zone[n].shm.size |
| && !shm_zone[i].noreuse) |
| { |
| shm_zone[i].shm.addr = oshm_zone[n].shm.addr; |
| #if (NGX_WIN32) |
| shm_zone[i].shm.handle = oshm_zone[n].shm.handle; |
| #endif |
| |
| if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data) |
| != NGX_OK) |
| { |
| goto failed; |
| } |
| |
| goto shm_zone_found; |
| } |
| |
| break; |
| } |
| |
| if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) { |
| goto failed; |
| } |
| |
| if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) { |
| goto failed; |
| } |
| |
| if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) { |
| goto failed; |
| } |
| |
| shm_zone_found: |
| |
| continue; |
| } |
| |
| |
| /* handle the listening sockets */ |
| |
| if (old_cycle->listening.nelts) { |
| ls = old_cycle->listening.elts; |
| for (i = 0; i < old_cycle->listening.nelts; i++) { |
| ls[i].remain = 0; |
| } |
| |
| nls = cycle->listening.elts; |
| for (n = 0; n < cycle->listening.nelts; n++) { |
| |
| for (i = 0; i < old_cycle->listening.nelts; i++) { |
| if (ls[i].ignore) { |
| continue; |
| } |
| |
| if (ls[i].remain) { |
| continue; |
| } |
| |
| if (ls[i].type != nls[n].type) { |
| continue; |
| } |
| |
| if (ngx_cmp_sockaddr(nls[n].sockaddr, nls[n].socklen, |
| ls[i].sockaddr, ls[i].socklen, 1) |
| == NGX_OK) |
| { |
| nls[n].fd = ls[i].fd; |
| nls[n].inherited = ls[i].inherited; |
| nls[n].previous = &ls[i]; |
| ls[i].remain = 1; |
| |
| if (ls[i].backlog != nls[n].backlog) { |
| nls[n].listen = 1; |
| } |
| |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) |
| |
| /* |
| * FreeBSD, except the most recent versions, |
| * could not remove accept filter |
| */ |
| nls[n].deferred_accept = ls[i].deferred_accept; |
| |
| if (ls[i].accept_filter && nls[n].accept_filter) { |
| if (ngx_strcmp(ls[i].accept_filter, |
| nls[n].accept_filter) |
| != 0) |
| { |
| nls[n].delete_deferred = 1; |
| nls[n].add_deferred = 1; |
| } |
| |
| } else if (ls[i].accept_filter) { |
| nls[n].delete_deferred = 1; |
| |
| } else if (nls[n].accept_filter) { |
| nls[n].add_deferred = 1; |
| } |
| #endif |
| |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) |
| |
| if (ls[i].deferred_accept && !nls[n].deferred_accept) { |
| nls[n].delete_deferred = 1; |
| |
| } else if (ls[i].deferred_accept != nls[n].deferred_accept) |
| { |
| nls[n].add_deferred = 1; |
| } |
| #endif |
| |
| #if (NGX_HAVE_REUSEPORT) |
| if (nls[n].reuseport && !ls[i].reuseport) { |
| nls[n].add_reuseport = 1; |
| } |
| #endif |
| |
| break; |
| } |
| } |
| |
| if (nls[n].fd == (ngx_socket_t) -1) { |
| nls[n].open = 1; |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) |
| if (nls[n].accept_filter) { |
| nls[n].add_deferred = 1; |
| } |
| #endif |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) |
| if (nls[n].deferred_accept) { |
| nls[n].add_deferred = 1; |
| } |
| #endif |
| } |
| } |
| |
| } else { |
| ls = cycle->listening.elts; |
| for (i = 0; i < cycle->listening.nelts; i++) { |
| ls[i].open = 1; |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) |
| if (ls[i].accept_filter) { |
| ls[i].add_deferred = 1; |
| } |
| #endif |
| #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) |
| if (ls[i].deferred_accept) { |
| ls[i].add_deferred = 1; |
| } |
| #endif |
| } |
| } |
| |
| if (ngx_open_listening_sockets(cycle) != NGX_OK) { |
| goto failed; |
| } |
| |
| if (!ngx_test_config) { |
| ngx_configure_listening_sockets(cycle); |
| } |
| |
| |
| /* commit the new cycle configuration */ |
| |
| if (!ngx_use_stderr) { |
| (void) ngx_log_redirect_stderr(cycle); |
| } |
| |
| pool->log = cycle->log; |
| |
| if (ngx_init_modules(cycle) != NGX_OK) { |
| /* fatal */ |
| exit(1); |
| } |
| |
| |
| /* close and delete stuff that lefts from an old cycle */ |
| |
| /* free the unnecessary shared memory */ |
| |
| opart = &old_cycle->shared_memory.part; |
| oshm_zone = opart->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= opart->nelts) { |
| if (opart->next == NULL) { |
| goto old_shm_zone_done; |
| } |
| opart = opart->next; |
| oshm_zone = opart->elts; |
| i = 0; |
| } |
| |
| part = &cycle->shared_memory.part; |
| shm_zone = part->elts; |
| |
| for (n = 0; /* void */ ; n++) { |
| |
| if (n >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| shm_zone = part->elts; |
| n = 0; |
| } |
| |
| if (oshm_zone[i].shm.name.len != shm_zone[n].shm.name.len) { |
| continue; |
| } |
| |
| if (ngx_strncmp(oshm_zone[i].shm.name.data, |
| shm_zone[n].shm.name.data, |
| oshm_zone[i].shm.name.len) |
| != 0) |
| { |
| continue; |
| } |
| |
| if (oshm_zone[i].tag == shm_zone[n].tag |
| && oshm_zone[i].shm.size == shm_zone[n].shm.size |
| && !oshm_zone[i].noreuse) |
| { |
| goto live_shm_zone; |
| } |
| |
| break; |
| } |
| |
| ngx_shm_free(&oshm_zone[i].shm); |
| |
| live_shm_zone: |
| |
| continue; |
| } |
| |
| old_shm_zone_done: |
| |
| |
| /* close the unnecessary listening sockets */ |
| |
| ls = old_cycle->listening.elts; |
| for (i = 0; i < old_cycle->listening.nelts; i++) { |
| |
| if (ls[i].remain || ls[i].fd == (ngx_socket_t) -1) { |
| continue; |
| } |
| |
| if (ngx_close_socket(ls[i].fd) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_close_socket_n " listening socket on %V failed", |
| &ls[i].addr_text); |
| } |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| |
| if (ls[i].sockaddr->sa_family == AF_UNIX) { |
| u_char *name; |
| |
| name = ls[i].addr_text.data + sizeof("unix:") - 1; |
| |
| ngx_log_error(NGX_LOG_WARN, cycle->log, 0, |
| "deleting socket %s", name); |
| |
| if (ngx_delete_file(name) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno, |
| ngx_delete_file_n " %s failed", name); |
| } |
| } |
| |
| #endif |
| } |
| |
| |
| /* close the unnecessary open files */ |
| |
| part = &old_cycle->open_files.part; |
| file = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| file = part->elts; |
| i = 0; |
| } |
| |
| if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) { |
| continue; |
| } |
| |
| if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| } |
| |
| ngx_destroy_pool(conf.temp_pool); |
| |
| if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) { |
| |
| ngx_destroy_pool(old_cycle->pool); |
| cycle->old_cycle = NULL; |
| |
| return cycle; |
| } |
| |
| |
| if (ngx_temp_pool == NULL) { |
| ngx_temp_pool = ngx_create_pool(128, cycle->log); |
| if (ngx_temp_pool == NULL) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, |
| "could not create ngx_temp_pool"); |
| exit(1); |
| } |
| |
| n = 10; |
| |
| if (ngx_array_init(&ngx_old_cycles, ngx_temp_pool, n, |
| sizeof(ngx_cycle_t *)) |
| != NGX_OK) |
| { |
| exit(1); |
| } |
| |
| ngx_memzero(ngx_old_cycles.elts, n * sizeof(ngx_cycle_t *)); |
| |
| ngx_cleaner_event.handler = ngx_clean_old_cycles; |
| ngx_cleaner_event.log = cycle->log; |
| ngx_cleaner_event.data = &dumb; |
| dumb.fd = (ngx_socket_t) -1; |
| } |
| |
| ngx_temp_pool->log = cycle->log; |
| |
| old = ngx_array_push(&ngx_old_cycles); |
| if (old == NULL) { |
| exit(1); |
| } |
| *old = old_cycle; |
| |
| if (!ngx_cleaner_event.timer_set) { |
| ngx_add_timer(&ngx_cleaner_event, 30000); |
| ngx_cleaner_event.timer_set = 1; |
| } |
| |
| return cycle; |
| |
| |
| failed: |
| |
| if (!ngx_is_init_cycle(old_cycle)) { |
| old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx, |
| ngx_core_module); |
| if (old_ccf->environment) { |
| environ = old_ccf->environment; |
| } |
| } |
| |
| /* rollback the new cycle configuration */ |
| |
| part = &cycle->open_files.part; |
| file = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| file = part->elts; |
| i = 0; |
| } |
| |
| if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) { |
| continue; |
| } |
| |
| if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| } |
| |
| /* free the newly created shared memory */ |
| |
| part = &cycle->shared_memory.part; |
| shm_zone = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| shm_zone = part->elts; |
| i = 0; |
| } |
| |
| if (shm_zone[i].shm.addr == NULL) { |
| continue; |
| } |
| |
| opart = &old_cycle->shared_memory.part; |
| oshm_zone = opart->elts; |
| |
| for (n = 0; /* void */ ; n++) { |
| |
| if (n >= opart->nelts) { |
| if (opart->next == NULL) { |
| break; |
| } |
| opart = opart->next; |
| oshm_zone = opart->elts; |
| n = 0; |
| } |
| |
| if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) { |
| continue; |
| } |
| |
| if (ngx_strncmp(shm_zone[i].shm.name.data, |
| oshm_zone[n].shm.name.data, |
| shm_zone[i].shm.name.len) |
| != 0) |
| { |
| continue; |
| } |
| |
| if (shm_zone[i].tag == oshm_zone[n].tag |
| && shm_zone[i].shm.size == oshm_zone[n].shm.size |
| && !shm_zone[i].noreuse) |
| { |
| goto old_shm_zone_found; |
| } |
| |
| break; |
| } |
| |
| ngx_shm_free(&shm_zone[i].shm); |
| |
| old_shm_zone_found: |
| |
| continue; |
| } |
| |
| if (ngx_test_config) { |
| ngx_destroy_cycle_pools(&conf); |
| return NULL; |
| } |
| |
| ls = cycle->listening.elts; |
| for (i = 0; i < cycle->listening.nelts; i++) { |
| if (ls[i].fd == (ngx_socket_t) -1 || !ls[i].open) { |
| continue; |
| } |
| |
| if (ngx_close_socket(ls[i].fd) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_close_socket_n " %V failed", |
| &ls[i].addr_text); |
| } |
| } |
| |
| ngx_destroy_cycle_pools(&conf); |
| |
| return NULL; |
| } |
| |
| |
| static void |
| ngx_destroy_cycle_pools(ngx_conf_t *conf) |
| { |
| ngx_destroy_pool(conf->temp_pool); |
| ngx_destroy_pool(conf->pool); |
| } |
| |
| |
| static ngx_int_t |
| ngx_init_zone_pool(ngx_cycle_t *cycle, ngx_shm_zone_t *zn) |
| { |
| u_char *file; |
| ngx_slab_pool_t *sp; |
| |
| sp = (ngx_slab_pool_t *) zn->shm.addr; |
| |
| if (zn->shm.exists) { |
| |
| if (sp == sp->addr) { |
| return NGX_OK; |
| } |
| |
| #if (NGX_WIN32) |
| |
| /* remap at the required address */ |
| |
| if (ngx_shm_remap(&zn->shm, sp->addr) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| sp = (ngx_slab_pool_t *) zn->shm.addr; |
| |
| if (sp == sp->addr) { |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, |
| "shared zone \"%V\" has no equal addresses: %p vs %p", |
| &zn->shm.name, sp->addr, sp); |
| return NGX_ERROR; |
| } |
| |
| sp->end = zn->shm.addr + zn->shm.size; |
| sp->min_shift = 3; |
| sp->addr = zn->shm.addr; |
| |
| #if (NGX_HAVE_ATOMIC_OPS) |
| |
| file = NULL; |
| |
| #else |
| |
| file = ngx_pnalloc(cycle->pool, |
| cycle->lock_file.len + zn->shm.name.len + 1); |
| if (file == NULL) { |
| return NGX_ERROR; |
| } |
| |
| (void) ngx_sprintf(file, "%V%V%Z", &cycle->lock_file, &zn->shm.name); |
| |
| #endif |
| |
| if (ngx_shmtx_create(&sp->mutex, &sp->lock, file) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| ngx_slab_init(sp); |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_create_pidfile(ngx_str_t *name, ngx_log_t *log) |
| { |
| size_t len; |
| ngx_int_t rc; |
| ngx_uint_t create; |
| ngx_file_t file; |
| u_char pid[NGX_INT64_LEN + 2]; |
| |
| if (ngx_process > NGX_PROCESS_MASTER) { |
| return NGX_OK; |
| } |
| |
| ngx_memzero(&file, sizeof(ngx_file_t)); |
| |
| file.name = *name; |
| file.log = log; |
| |
| create = ngx_test_config ? NGX_FILE_CREATE_OR_OPEN : NGX_FILE_TRUNCATE; |
| |
| file.fd = ngx_open_file(file.name.data, NGX_FILE_RDWR, |
| create, NGX_FILE_DEFAULT_ACCESS); |
| |
| if (file.fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", file.name.data); |
| return NGX_ERROR; |
| } |
| |
| rc = NGX_OK; |
| |
| if (!ngx_test_config) { |
| len = ngx_snprintf(pid, NGX_INT64_LEN + 2, "%P%N", ngx_pid) - pid; |
| |
| if (ngx_write_file(&file, pid, len, 0) == NGX_ERROR) { |
| rc = NGX_ERROR; |
| } |
| } |
| |
| if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", file.name.data); |
| } |
| |
| return rc; |
| } |
| |
| |
| void |
| ngx_delete_pidfile(ngx_cycle_t *cycle) |
| { |
| u_char *name; |
| ngx_core_conf_t *ccf; |
| |
| ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); |
| |
| name = ngx_new_binary ? ccf->oldpid.data : ccf->pid.data; |
| |
| if (ngx_delete_file(name) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
| ngx_delete_file_n " \"%s\" failed", name); |
| } |
| } |
| |
| |
| ngx_int_t |
| ngx_signal_process(ngx_cycle_t *cycle, char *sig) |
| { |
| ssize_t n; |
| ngx_pid_t pid; |
| ngx_file_t file; |
| ngx_core_conf_t *ccf; |
| u_char buf[NGX_INT64_LEN + 2]; |
| |
| ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "signal process started"); |
| |
| ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); |
| |
| ngx_memzero(&file, sizeof(ngx_file_t)); |
| |
| file.name = ccf->pid; |
| file.log = cycle->log; |
| |
| file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY, |
| NGX_FILE_OPEN, NGX_FILE_DEFAULT_ACCESS); |
| |
| if (file.fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_ERR, cycle->log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", file.name.data); |
| return 1; |
| } |
| |
| n = ngx_read_file(&file, buf, NGX_INT64_LEN + 2, 0); |
| |
| if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", file.name.data); |
| } |
| |
| if (n == NGX_ERROR) { |
| return 1; |
| } |
| |
| while (n-- && (buf[n] == CR || buf[n] == LF)) { /* void */ } |
| |
| pid = ngx_atoi(buf, ++n); |
| |
| if (pid == (ngx_pid_t) NGX_ERROR) { |
| ngx_log_error(NGX_LOG_ERR, cycle->log, 0, |
| "invalid PID number \"%*s\" in \"%s\"", |
| n, buf, file.name.data); |
| return 1; |
| } |
| |
| return ngx_os_signal_process(cycle, sig, pid); |
| |
| } |
| |
| |
| static ngx_int_t |
| ngx_test_lockfile(u_char *file, ngx_log_t *log) |
| { |
| #if !(NGX_HAVE_ATOMIC_OPS) |
| ngx_fd_t fd; |
| |
| fd = ngx_open_file(file, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN, |
| NGX_FILE_DEFAULT_ACCESS); |
| |
| if (fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", file); |
| return NGX_ERROR; |
| } |
| |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", file); |
| } |
| |
| if (ngx_delete_file(file) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
| ngx_delete_file_n " \"%s\" failed", file); |
| } |
| |
| #endif |
| |
| return NGX_OK; |
| } |
| |
| |
| void |
| ngx_reopen_files(ngx_cycle_t *cycle, ngx_uid_t user) |
| { |
| ngx_fd_t fd; |
| ngx_uint_t i; |
| ngx_list_part_t *part; |
| ngx_open_file_t *file; |
| |
| part = &cycle->open_files.part; |
| file = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| file = part->elts; |
| i = 0; |
| } |
| |
| if (file[i].name.len == 0) { |
| continue; |
| } |
| |
| if (file[i].flush) { |
| file[i].flush(&file[i], cycle->log); |
| } |
| |
| fd = ngx_open_file(file[i].name.data, NGX_FILE_APPEND, |
| NGX_FILE_CREATE_OR_OPEN, NGX_FILE_DEFAULT_ACCESS); |
| |
| ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
| "reopen file \"%s\", old:%d new:%d", |
| file[i].name.data, file[i].fd, fd); |
| |
| if (fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", file[i].name.data); |
| continue; |
| } |
| |
| #if !(NGX_WIN32) |
| if (user != (ngx_uid_t) NGX_CONF_UNSET_UINT) { |
| ngx_file_info_t fi; |
| |
| if (ngx_file_info(file[i].name.data, &fi) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_file_info_n " \"%s\" failed", |
| file[i].name.data); |
| |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| |
| continue; |
| } |
| |
| if (fi.st_uid != user) { |
| if (chown((const char *) file[i].name.data, user, -1) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| "chown(\"%s\", %d) failed", |
| file[i].name.data, user); |
| |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| |
| continue; |
| } |
| } |
| |
| if ((fi.st_mode & (S_IRUSR|S_IWUSR)) != (S_IRUSR|S_IWUSR)) { |
| |
| fi.st_mode |= (S_IRUSR|S_IWUSR); |
| |
| if (chmod((const char *) file[i].name.data, fi.st_mode) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| "chmod() \"%s\" failed", file[i].name.data); |
| |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| |
| continue; |
| } |
| } |
| } |
| |
| if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| "fcntl(FD_CLOEXEC) \"%s\" failed", |
| file[i].name.data); |
| |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| |
| continue; |
| } |
| #endif |
| |
| if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", |
| file[i].name.data); |
| } |
| |
| file[i].fd = fd; |
| } |
| |
| (void) ngx_log_redirect_stderr(cycle); |
| } |
| |
| |
| ngx_shm_zone_t * |
| ngx_shared_memory_add(ngx_conf_t *cf, ngx_str_t *name, size_t size, void *tag) |
| { |
| ngx_uint_t i; |
| ngx_shm_zone_t *shm_zone; |
| ngx_list_part_t *part; |
| |
| part = &cf->cycle->shared_memory.part; |
| shm_zone = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| part = part->next; |
| shm_zone = part->elts; |
| i = 0; |
| } |
| |
| if (name->len != shm_zone[i].shm.name.len) { |
| continue; |
| } |
| |
| if (ngx_strncmp(name->data, shm_zone[i].shm.name.data, name->len) |
| != 0) |
| { |
| continue; |
| } |
| |
| if (tag != shm_zone[i].tag) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the shared memory zone \"%V\" is " |
| "already declared for a different use", |
| &shm_zone[i].shm.name); |
| return NULL; |
| } |
| |
| if (shm_zone[i].shm.size == 0) { |
| shm_zone[i].shm.size = size; |
| } |
| |
| if (size && size != shm_zone[i].shm.size) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the size %uz of shared memory zone \"%V\" " |
| "conflicts with already declared size %uz", |
| size, &shm_zone[i].shm.name, shm_zone[i].shm.size); |
| return NULL; |
| } |
| |
| return &shm_zone[i]; |
| } |
| |
| shm_zone = ngx_list_push(&cf->cycle->shared_memory); |
| |
| if (shm_zone == NULL) { |
| return NULL; |
| } |
| |
| shm_zone->data = NULL; |
| shm_zone->shm.log = cf->cycle->log; |
| shm_zone->shm.addr = NULL; |
| shm_zone->shm.size = size; |
| shm_zone->shm.name = *name; |
| shm_zone->shm.exists = 0; |
| shm_zone->init = NULL; |
| shm_zone->tag = tag; |
| shm_zone->noreuse = 0; |
| |
| return shm_zone; |
| } |
| |
| |
| static void |
| ngx_clean_old_cycles(ngx_event_t *ev) |
| { |
| ngx_uint_t i, n, found, live; |
| ngx_log_t *log; |
| ngx_cycle_t **cycle; |
| |
| log = ngx_cycle->log; |
| ngx_temp_pool->log = log; |
| |
| ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "clean old cycles"); |
| |
| live = 0; |
| |
| cycle = ngx_old_cycles.elts; |
| for (i = 0; i < ngx_old_cycles.nelts; i++) { |
| |
| if (cycle[i] == NULL) { |
| continue; |
| } |
| |
| found = 0; |
| |
| for (n = 0; n < cycle[i]->connection_n; n++) { |
| if (cycle[i]->connections[n].fd != (ngx_socket_t) -1) { |
| found = 1; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "live fd:%ui", n); |
| |
| break; |
| } |
| } |
| |
| if (found) { |
| live = 1; |
| continue; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "clean old cycle: %ui", i); |
| |
| ngx_destroy_pool(cycle[i]->pool); |
| cycle[i] = NULL; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "old cycles status: %ui", live); |
| |
| if (live) { |
| ngx_add_timer(ev, 30000); |
| |
| } else { |
| ngx_destroy_pool(ngx_temp_pool); |
| ngx_temp_pool = NULL; |
| ngx_old_cycles.nelts = 0; |
| } |
| } |
| |
| |
| void |
| ngx_set_shutdown_timer(ngx_cycle_t *cycle) |
| { |
| ngx_core_conf_t *ccf; |
| |
| ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); |
| |
| if (ccf->shutdown_timeout) { |
| ngx_shutdown_event.handler = ngx_shutdown_timer_handler; |
| ngx_shutdown_event.data = cycle; |
| ngx_shutdown_event.log = cycle->log; |
| ngx_shutdown_event.cancelable = 1; |
| |
| ngx_add_timer(&ngx_shutdown_event, ccf->shutdown_timeout); |
| } |
| } |
| |
| |
| static void |
| ngx_shutdown_timer_handler(ngx_event_t *ev) |
| { |
| ngx_uint_t i; |
| ngx_cycle_t *cycle; |
| ngx_connection_t *c; |
| |
| cycle = ev->data; |
| |
| c = cycle->connections; |
| |
| for (i = 0; i < cycle->connection_n; i++) { |
| |
| if (c[i].fd == (ngx_socket_t) -1 |
| || c[i].read == NULL |
| || c[i].read->accept |
| || c[i].read->channel |
| || c[i].read->resolver) |
| { |
| continue; |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, |
| "*%uA shutdown timeout", c[i].number); |
| |
| c[i].close = 1; |
| c[i].error = 1; |
| |
| c[i].read->handler(c[i].read); |
| } |
| } |
