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src/core/ngx_cycle.c - nginx-1.7.10
Global variables defined
Functions defined
Source code
- #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);
- 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;
- ngx_uint_t ngx_test_config;
- ngx_uint_t ngx_quiet_mode;
- #if (NGX_THREADS)
- ngx_tls_key_t ngx_core_tls_key;
- #endif
- static ngx_connection_t dumb;
- ngx_cycle_t *
- ngx_init_cycle(ngx_cycle_t *old_cycle)
- {
- void *rv;
- char **senv, **env;
- 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();
-
- 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;
- cycle->paths.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
- if (cycle->paths.elts == NULL) {
- ngx_destroy_pool(pool);
- return NULL;
- }
- cycle->paths.nelts = 0;
- cycle->paths.size = sizeof(ngx_path_t *);
- cycle->paths.nalloc = n;
- cycle->paths.pool = pool;
- 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;
- cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
- if (cycle->listening.elts == NULL) {
- ngx_destroy_pool(pool);
- return NULL;
- }
- cycle->listening.nelts = 0;
- cycle->listening.size = sizeof(ngx_listening_t);
- cycle->listening.nalloc = n;
- cycle->listening.pool = pool;
- 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;
- }
-
- 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);
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_CORE_MODULE) {
- continue;
- }
- module = ngx_modules[i]->ctx;
- if (module->create_conf) {
- rv = module->create_conf(cycle);
- if (rv == NULL) {
- ngx_destroy_pool(pool);
- return NULL;
- }
- cycle->conf_ctx[ngx_modules[i]->index] = rv;
- }
- }
- senv = environ;
- ngx_memzero(&conf, sizeof(ngx_conf_t));
-
- 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
- #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; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_CORE_MODULE) {
- continue;
- }
- module = ngx_modules[i]->ctx;
- if (module->init_conf) {
- if (module->init_conf(cycle, cycle->conf_ctx[ngx_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)) {
-
- 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)
- {
-
- 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;
- }
-
- part = &cycle->open_files.part;
- file = part->elts;
- for (i = 0; ; 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;
-
- part = &cycle->shared_memory.part;
- shm_zone = part->elts;
- for (i = 0; ; 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; ; 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].shm.addr = oshm_zone[n].shm.addr;
- 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;
- }
-
- 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 (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)
-
- 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
- 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);
- }
-
- if (!ngx_use_stderr) {
- (void) ngx_log_redirect_stderr(cycle);
- }
- pool->log = cycle->log;
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->init_module) {
- if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
-
- exit(1);
- }
- }
- }
-
-
- opart = &old_cycle->shared_memory.part;
- oshm_zone = opart->elts;
- for (i = 0; ; 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; ; 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:
-
- 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
- }
-
- part = &old_cycle->open_files.part;
- file = part->elts;
- for (i = 0; ; 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)) {
-
- env = environ;
- environ = senv;
- ngx_destroy_pool(old_cycle->pool);
- cycle->old_cycle = NULL;
- environ = env;
- 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;
- ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
- n * sizeof(ngx_cycle_t *));
- if (ngx_old_cycles.elts == NULL) {
- exit(1);
- }
- ngx_old_cycles.nelts = 0;
- ngx_old_cycles.size = sizeof(ngx_cycle_t *);
- ngx_old_cycles.nalloc = n;
- ngx_old_cycles.pool = ngx_temp_pool;
- 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;
- }
- }
-
- part = &cycle->open_files.part;
- file = part->elts;
- for (i = 0; ; 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;
- }
- 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_int_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)) { }
- pid = ngx_atoi(buf, ++n);
- if (pid == 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; ; 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; ; 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 (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;
- 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:%d", n);
- break;
- }
- }
- if (found) {
- live = 1;
- continue;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "clean old cycle: %d", i);
- ngx_destroy_pool(cycle[i]->pool);
- cycle[i] = NULL;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "old cycles status: %d", live);
- if (live) {
- ngx_add_timer(ev, 30000);
- } else {
- ngx_destroy_pool(ngx_temp_pool);
- ngx_temp_pool = NULL;
- ngx_old_cycles.nelts = 0;
- }
- }
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