diff options
Diffstat (limited to 'app/nginx/src/core/ngx_cycle.c')
| -rw-r--r-- | app/nginx/src/core/ngx_cycle.c | 1384 |
1 files changed, 1384 insertions, 0 deletions
diff --git a/app/nginx/src/core/ngx_cycle.c b/app/nginx/src/core/ngx_cycle.c new file mode 100644 index 0000000..aee7a58 --- /dev/null +++ b/app/nginx/src/core/ngx_cycle.c @@ -0,0 +1,1384 @@ + +/* + * 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->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; + } + + ngx_shm_free(&oshm_zone[n].shm); + + 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].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 + && ngx_strncmp(oshm_zone[i].shm.name.data, + shm_zone[n].shm.name.data, + oshm_zone[i].shm.name.len) + == 0) + { + goto live_shm_zone; + } + } + + 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); + } + } + + 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); + 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_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; + } + + 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) { + return 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 NGX_OK; +} + + +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((const char *) 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.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); + } +} |