diff options
Diffstat (limited to '')
| -rw-r--r-- | src/nxt_cycle.c | 1743 |
1 files changed, 1743 insertions, 0 deletions
diff --git a/src/nxt_cycle.c b/src/nxt_cycle.c new file mode 100644 index 00000000..8539bc05 --- /dev/null +++ b/src/nxt_cycle.c @@ -0,0 +1,1743 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Valentin V. Bartenev + * Copyright (C) NGINX, Inc. + */ + +#include <nxt_main.h> +#include <nxt_cycle.h> +#include <nxt_process_chan.h> +#include <nxt_master_process.h> + + +static nxt_int_t nxt_cycle_inherited_listen_sockets(nxt_thread_t *thr, + nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_systemd_listen_sockets(nxt_thread_t *thr, + nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_event_engines(nxt_thread_t *thr, nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_processes(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_thread_pools(nxt_thread_t *thr, nxt_cycle_t *cycle); +static void nxt_cycle_start(nxt_thread_t *thr, void *obj, void *data); +static void nxt_cycle_initial_start(nxt_thread_t *thr, nxt_cycle_t *cycle); +static void nxt_cycle_conf_test(nxt_thread_t *thr, nxt_cycle_t *cycle); +static void nxt_single_process_start(nxt_thread_t *thr, nxt_cycle_t *cycle); +static void nxt_cycle_close_idle_connections(nxt_thread_t *thr); +static void nxt_cycle_exit(nxt_thread_t *thr, void *obj, void *data); +static nxt_int_t nxt_cycle_event_engine_change(nxt_thread_t *thr, + nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_conf_init(nxt_thread_t *thr, nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_conf_read_cmd(nxt_thread_t *thr, nxt_cycle_t *cycle); +static nxt_sockaddr_t *nxt_cycle_sockaddr_parse(nxt_str_t *addr, + nxt_mem_pool_t *mp, nxt_log_t *log); +static nxt_sockaddr_t *nxt_cycle_sockaddr_unix_parse(nxt_str_t *addr, + nxt_mem_pool_t *mp, nxt_log_t *log); +static nxt_sockaddr_t *nxt_cycle_sockaddr_inet6_parse(nxt_str_t *addr, + nxt_mem_pool_t *mp, nxt_log_t *log); +static nxt_sockaddr_t *nxt_cycle_sockaddr_inet_parse(nxt_str_t *addr, + nxt_mem_pool_t *mp, nxt_log_t *log); +static nxt_int_t nxt_cycle_conf_apply(nxt_thread_t *thr, nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_listen_socket(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_hostname(nxt_thread_t *thr, nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_log_files_init(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_log_files_create(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_listen_sockets_create(nxt_cycle_t *cycle); +static void nxt_cycle_listen_sockets_close(nxt_cycle_t *cycle); +static void nxt_cycle_pid_file_delete(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_shm_zones_enable(nxt_cycle_t *cycle); +static nxt_int_t nxt_cycle_shm_zone_create(nxt_cycle_shm_zone_t *shm_zone); + +#if (NXT_THREADS) +static void nxt_cycle_thread_pool_destroy(nxt_thread_t *thr, + nxt_cycle_t *cycle, nxt_cycle_cont_t cont); +#endif + + +nxt_thread_declare_data(nxt_cycle_t *, nxt_thread_cycle_data); + + +nxt_int_t +nxt_cycle_create(nxt_thread_t *thr, nxt_cycle_t *previous, + nxt_cycle_cont_t start, nxt_str_t *config_name, nxt_bool_t test_config) +{ + nxt_int_t ret; + nxt_cycle_t *cycle; + nxt_array_t *listen_sockets; + nxt_mem_pool_t *mp; + static nxt_str_t upstream_zone = nxt_string("upstream_zone"); + + mp = nxt_mem_pool_create(1024); + + if (nxt_slow_path(mp == NULL)) { + return NXT_ERROR; + } + + /* This alloction cannot fail. */ + cycle = nxt_mem_zalloc(mp, sizeof(nxt_cycle_t)); + + cycle->mem_pool = mp; + cycle->previous = previous; + cycle->config_name = config_name; + cycle->test_config = test_config; + + if (previous == NULL) { + cycle->prefix = nxt_current_directory(mp); + + } else { + cycle->type = previous->type; + cycle->prefix = nxt_str_dup(mp, NULL, previous->prefix); + } + + if (nxt_slow_path(cycle->prefix == NULL)) { + goto fail; + } + + cycle->conf_prefix = cycle->prefix; + + cycle->services = nxt_services_init(mp); + if (nxt_slow_path(cycle->services == NULL)) { + goto fail; + } + + listen_sockets = nxt_array_create(mp, 1, sizeof(nxt_listen_socket_t)); + if (nxt_slow_path(listen_sockets == NULL)) { + goto fail; + } + + cycle->listen_sockets = listen_sockets; + + if (previous == NULL) { + ret = nxt_cycle_inherited_listen_sockets(thr, cycle); + if (nxt_slow_path(ret != NXT_OK)) { + goto fail; + } + } + + if (nxt_slow_path(nxt_cycle_hostname(thr, cycle) != NXT_OK)) { + goto fail; + } + + if (nxt_slow_path(nxt_cycle_log_files_init(cycle) != NXT_OK)) { + goto fail; + } + + if (nxt_slow_path(nxt_cycle_event_engines(thr, cycle) != NXT_OK)) { + goto fail; + } + + if (nxt_slow_path(nxt_cycle_processes(cycle) != NXT_OK)) { + goto fail; + } + + if (nxt_slow_path(nxt_cycle_thread_pools(thr, cycle) != NXT_OK)) { + goto fail; + } + + ret = nxt_cycle_shm_zone_add(cycle, &upstream_zone, 1024 * 1024, 8192); + if (nxt_slow_path(ret != NXT_OK)) { + goto fail; + } + + /* Cycle shm zones array is created on demand. */ + + if (previous != NULL) { + previous->reconfiguring = 1; + cycle->start = start; + + } else { + nxt_thread_init_data(nxt_thread_cycle_data); + nxt_thread_cycle_set(cycle); + + cycle->start = test_config ? nxt_cycle_conf_test: + nxt_cycle_initial_start; + } + + nxt_log_debug(thr->log, "new cycle: %p", cycle); + + nxt_thread_work_queue_add(thr, &thr->work_queue.main, nxt_cycle_start, + cycle, NULL, &nxt_main_log); + + return NXT_OK; + +fail: + + nxt_mem_pool_destroy(mp); + + return NXT_ERROR; +} + + +static nxt_int_t +nxt_cycle_inherited_listen_sockets(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + u_char *v, *p; + nxt_int_t type; + nxt_array_t *inherited_sockets; + nxt_socket_t s; + nxt_listen_socket_t *ls; + + v = (u_char *) getenv("NGINX"); + + if (v == NULL) { + return nxt_cycle_systemd_listen_sockets(thr, cycle); + } + + nxt_log_error(NXT_LOG_NOTICE, thr->log, + "using inherited listen sockets: %s", v); + + inherited_sockets = nxt_array_create(cycle->mem_pool, + 1, sizeof(nxt_listen_socket_t)); + if (inherited_sockets == NULL) { + return NXT_ERROR; + } + + cycle->inherited_sockets = inherited_sockets; + + for (p = v; *p != '\0'; p++) { + + if (*p == ';') { + s = nxt_int_parse(v, p - v); + + if (nxt_slow_path(s < 0)) { + nxt_log_emerg(thr->log, "invalid socket number " + "\"%s\" in NGINX environment variable, " + "ignoring the rest of the variable", v); + return NXT_ERROR; + } + + v = p + 1; + + ls = nxt_array_zero_add(inherited_sockets); + if (nxt_slow_path(ls == NULL)) { + return NXT_ERROR; + } + + ls->socket = s; + + ls->sockaddr = nxt_getsockname(cycle->mem_pool, s); + if (nxt_slow_path(ls->sockaddr == NULL)) { + return NXT_ERROR; + } + + type = nxt_socket_getsockopt(s, SOL_SOCKET, SO_TYPE); + if (nxt_slow_path(type == -1)) { + return NXT_ERROR; + } + + ls->sockaddr->type = (uint16_t) type; + } + } + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_systemd_listen_sockets(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + u_char *nfd, *pid; + nxt_int_t n; + nxt_array_t *inherited_sockets; + nxt_socket_t s; + nxt_listen_socket_t *ls; + + /* + * Number of listening sockets passed. The socket + * descriptors start from number 3 and are sequential. + */ + nfd = (u_char *) getenv("LISTEN_FDS"); + if (nfd == NULL) { + return NXT_OK; + } + + /* The pid of the service process. */ + pid = (u_char *) getenv("LISTEN_PID"); + if (pid == NULL) { + return NXT_OK; + } + + n = nxt_int_parse(nfd, nxt_strlen(nfd)); + if (n < 0) { + return NXT_OK; + } + + if (nxt_pid != nxt_int_parse(pid, nxt_strlen(pid))) { + return NXT_OK; + } + + nxt_log_error(NXT_LOG_NOTICE, thr->log, + "using %s systemd listen sockets", n); + + inherited_sockets = nxt_array_create(cycle->mem_pool, + n, sizeof(nxt_listen_socket_t)); + if (inherited_sockets == NULL) { + return NXT_ERROR; + } + + cycle->inherited_sockets = inherited_sockets; + + for (s = 3; s < n; s++) { + ls = nxt_array_zero_add(inherited_sockets); + if (nxt_slow_path(ls == NULL)) { + return NXT_ERROR; + } + + ls->socket = s; + + ls->sockaddr = nxt_getsockname(cycle->mem_pool, s); + if (nxt_slow_path(ls->sockaddr == NULL)) { + return NXT_ERROR; + } + + ls->sockaddr->type = SOCK_STREAM; + } + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_event_engines(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + nxt_event_engine_t *engine, **e, **engines; + const nxt_event_set_ops_t *event_set; + + cycle->engines = nxt_array_create(cycle->mem_pool, 1, + sizeof(nxt_event_engine_t *)); + + if (nxt_slow_path(cycle->engines == NULL)) { + return NXT_ERROR; + } + + e = nxt_array_add(cycle->engines); + if (nxt_slow_path(e == NULL)) { + return NXT_ERROR; + } + + if (cycle->previous != NULL) { + /* Event engines are not allocated in memory pool. */ + engines = cycle->previous->engines->elts; + *e = engines[0]; + + } else { + event_set = nxt_service_get(cycle->services, "engine", NULL); + + if (nxt_slow_path(event_set == NULL)) { + /* TODO: log */ + return NXT_ERROR; + } + + engine = nxt_event_engine_create(thr, event_set, + nxt_master_process_signals, 0, 0); + + if (nxt_slow_path(engine == NULL)) { + return NXT_ERROR; + } + + engine->id = cycle->last_engine_id++; + *e = engine; + } + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_processes(nxt_cycle_t *cycle) +{ + nxt_uint_t n; + nxt_process_chan_t *proc, *prev; + + /* + * Preallocate double number of previous cycle + * process slots or 2 process slots for initial cycle. + */ + n = (cycle->previous != NULL) ? cycle->previous->processes->nelts : 1; + + cycle->processes = nxt_array_create(cycle->mem_pool, 2 * n, + sizeof(nxt_process_chan_t)); + + if (nxt_slow_path(cycle->processes == NULL)) { + return NXT_ERROR; + } + + if (cycle->previous != NULL) { + cycle->process_generation = cycle->previous->process_generation; + + prev = cycle->previous->processes->elts; + + while (n != 0) { + proc = nxt_array_add(cycle->processes); + if (nxt_slow_path(proc == NULL)) { + return NXT_ERROR; + } + + *proc = *prev++; + n--; + } + } + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_thread_pools(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ +#if (NXT_THREADS) + nxt_int_t ret; + nxt_array_t *thread_pools; + + thread_pools = nxt_array_create(cycle->mem_pool, 1, + sizeof(nxt_thread_pool_t *)); + + if (nxt_slow_path(thread_pools == NULL)) { + return NXT_ERROR; + } + + cycle->thread_pools = thread_pools; + + ret = nxt_cycle_thread_pool_create(thr, cycle, 2, 60000 * 1000000LL); + + if (nxt_slow_path(ret != NXT_OK)) { + return NXT_ERROR; + } + +#endif + + return NXT_OK; +} + + +static void +nxt_cycle_start(nxt_thread_t *thr, void *obj, void *data) +{ + nxt_uint_t i; + nxt_cycle_t *cycle; + + cycle = obj; + + nxt_log_debug(thr->log, "cycle conf done"); + + nxt_mem_pool_debug_lock(cycle->mem_pool, nxt_thread_tid(thr)); + + thr->log->ctx_handler = NULL; + thr->log->ctx = NULL; + + if (nxt_cycle_conf_init(thr, cycle) != NXT_OK) { + goto fail; + } + + for (i = 0; i < nxt_init_modules_n; i++) { + if (nxt_init_modules[i](thr, cycle) != NXT_OK) { + goto fail; + } + } + + if (nxt_cycle_conf_apply(thr, cycle) != NXT_OK) { + goto fail; + } + + nxt_thread_cycle_set(cycle); + +#if (NXT_THREADS) + + /* + * Thread pools should be destroyed before starting worker + * processes, because thread pool semaphores will stick in + * locked state in new processes after fork(). + */ + nxt_cycle_thread_pool_destroy(thr, cycle, cycle->start); + +#else + + cycle->start(thr, cycle); + +#endif + + return; + +fail: + + nxt_cycle_quit(thr, cycle); +} + + +static void +nxt_cycle_initial_start(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + nxt_int_t ret; + const nxt_event_set_ops_t *event_set; + + if (cycle->inherited_sockets == NULL && cycle->daemon) { + + if (nxt_process_daemon() != NXT_OK) { + goto fail; + } + + /* + * An event engine should be updated after fork() + * even if an event facility was not changed because: + * 1) inherited kqueue descriptor is invalid, + * 2) the signal thread is not inherited. + */ + event_set = nxt_service_get(cycle->services, "engine", cycle->engine); + if (event_set == NULL) { + goto fail; + } + + ret = nxt_event_engine_change(thr, event_set, cycle->batch); + if (ret != NXT_OK) { + goto fail; + } + } + + ret = nxt_cycle_pid_file_create(cycle->pid_file, cycle->test_config); + if (ret != NXT_OK) { + goto fail; + } + + if (nxt_cycle_event_engine_change(thr, cycle) != NXT_OK) { + goto fail; + } + + thr->engine->max_connections = cycle->engine_connections; + + if (cycle->master_process) { + if (nxt_master_process_start(thr, cycle) != NXT_ERROR) { + return; + } + + } else { + nxt_single_process_start(thr, cycle); + return; + } + +fail: + + nxt_cycle_quit(thr, cycle); +} + + +static void +nxt_cycle_conf_test(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + (void) nxt_cycle_pid_file_create(cycle->pid_file, cycle->test_config); + + nxt_cycle_quit(thr, cycle); +} + + +static void +nxt_single_process_start(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ +#if (NXT_THREADS) + nxt_int_t ret; + + ret = nxt_cycle_thread_pool_create(thr, cycle, cycle->auxiliary_threads, + 60000 * 1000000LL); + + if (nxt_slow_path(ret != NXT_OK)) { + nxt_cycle_quit(thr, cycle); + return; + } + +#endif + + cycle->type = NXT_PROCESS_SINGLE; + + nxt_cycle_listen_sockets_enable(thr, cycle); + + return; +} + + +void +nxt_cycle_quit(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + nxt_bool_t done; + + nxt_log_debug(thr->log, "exiting"); + + if (cycle == NULL) { + cycle = nxt_thread_cycle(); + } + + done = 1; + + if (!thr->engine->shutdown) { + thr->engine->shutdown = 1; + +#if (NXT_THREADS) + + if (!nxt_array_is_empty(cycle->thread_pools)) { + nxt_cycle_thread_pool_destroy(thr, cycle, nxt_cycle_quit); + done = 0; + } + +#endif + + if (!cycle->test_config && cycle->type == NXT_PROCESS_MASTER) { + nxt_master_stop_worker_processes(cycle); + done = 0; + } + } + + nxt_cycle_close_idle_connections(thr); + + if (done) { + nxt_thread_work_queue_add(thr, &thr->work_queue.main, nxt_cycle_exit, + cycle, NULL, &nxt_main_log); + } +} + + +static void +nxt_cycle_close_idle_connections(nxt_thread_t *thr) +{ + nxt_queue_t *idle; + nxt_queue_link_t *link, *next; + nxt_event_conn_t *c; + + nxt_log_debug(thr->log, "close idle connections"); + + idle = &thr->engine->idle_connections; + + for (link = nxt_queue_head(idle); + link != nxt_queue_tail(idle); + link = next) + { + next = nxt_queue_next(link); + c = nxt_queue_link_data(link, nxt_event_conn_t, link); + + if (!c->socket.read_ready) { + nxt_queue_remove(link); + nxt_event_conn_close(thr, c); + } + } +} + + +static void +nxt_cycle_exit(nxt_thread_t *thr, void *obj, void *data) +{ + nxt_cycle_t *cycle; + + cycle = obj; + +#if (NXT_THREADS) + + nxt_log_debug(thr->log, "thread pools: %d", cycle->thread_pools->nelts); + + if (!nxt_array_is_empty(cycle->thread_pools)) { + return; + } + +#endif + + if (cycle->type <= NXT_PROCESS_MASTER) { + nxt_cycle_pid_file_delete(cycle); + } + + if (!thr->engine->event->signal_support) { + nxt_event_engine_signals_stop(thr->engine); + } + + nxt_log_debug(thr->log, "exit"); + + exit(0); + nxt_unreachable(); +} + + +static nxt_int_t +nxt_cycle_event_engine_change(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + const nxt_event_set_ops_t *event_set; + + if (thr->engine->batch == cycle->batch + && nxt_strcmp(thr->engine->event->name, cycle->engine) == 0) + { + return NXT_OK; + } + + event_set = nxt_service_get(cycle->services, "engine", cycle->engine); + if (event_set != NULL) { + return nxt_event_engine_change(thr, event_set, cycle->batch); + } + + return NXT_ERROR; +} + + +void +nxt_cycle_event_engine_free(nxt_cycle_t *cycle) +{ + nxt_event_engine_t *engine, **engines; + + engines = cycle->engines->elts; + engine = engines[0]; + nxt_array_remove(cycle->engines, &engines[0]); + + nxt_event_engine_free(engine); +} + + +#if (NXT_THREADS) + +static void nxt_cycle_thread_pool_init(void); +static void nxt_cycle_thread_pool_exit(nxt_thread_t *thr, void *obj, + void *data); + + +nxt_int_t +nxt_cycle_thread_pool_create(nxt_thread_t *thr, nxt_cycle_t *cycle, + nxt_uint_t max_threads, nxt_nsec_t timeout) +{ + nxt_thread_pool_t *thread_pool, **tp; + + tp = nxt_array_add(cycle->thread_pools); + if (tp == NULL) { + return NXT_ERROR; + } + + thread_pool = nxt_thread_pool_create(max_threads, timeout, + nxt_cycle_thread_pool_init, + thr->engine, + nxt_cycle_thread_pool_exit); + + if (nxt_fast_path(thread_pool != NULL)) { + *tp = thread_pool; + } + + return NXT_OK; +} + + +static void +nxt_cycle_thread_pool_destroy(nxt_thread_t *thr, nxt_cycle_t *cycle, + nxt_cycle_cont_t cont) +{ + nxt_uint_t n; + nxt_thread_pool_t **tp; + + cycle->continuation = cont; + + n = cycle->thread_pools->nelts; + + if (n == 0) { + cont(thr, cycle); + return; + } + + tp = cycle->thread_pools->elts; + + do { + nxt_thread_pool_destroy(*tp); + + tp++; + n--; + } while (n != 0); +} + + +static void +nxt_cycle_thread_pool_init(void) +{ +#if (NXT_REGEX) + nxt_regex_init(0); +#endif +} + + +static void +nxt_cycle_thread_pool_exit(nxt_thread_t *thr, void *obj, void *data) +{ + nxt_uint_t i, n; + nxt_cycle_t *cycle; + nxt_thread_pool_t *tp, **thread_pools; + nxt_thread_handle_t handle; + + tp = obj; + + if (data != NULL) { + handle = (nxt_thread_handle_t) (uintptr_t) data; + nxt_thread_wait(handle); + } + + cycle = nxt_thread_cycle(); + + thread_pools = cycle->thread_pools->elts; + n = cycle->thread_pools->nelts; + + nxt_log_debug(thr->log, "thread pools: %ui, cycle %p", n, cycle); + + for (i = 0; i < n; i++) { + + if (tp == thread_pools[i]) { + nxt_array_remove(cycle->thread_pools, &thread_pools[i]); + + if (n == 1) { + /* The last thread pool. */ + cycle->continuation(thr, cycle); + } + + return; + } + } +} + +#endif + + +static nxt_int_t +nxt_cycle_conf_init(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + nxt_int_t ret; + nxt_str_t *prefix; + nxt_file_t *file; + nxt_file_name_str_t file_name; + const nxt_event_set_ops_t *event_set; + + cycle->daemon = 1; + cycle->master_process = 1; + cycle->engine_connections = 256; + cycle->worker_processes = 1; + cycle->auxiliary_threads = 2; + cycle->user_cred.user = "nobody"; + cycle->group = NULL; + cycle->pid = "nginman.pid"; + cycle->error_log = "error.log"; + + if (nxt_cycle_conf_read_cmd(thr, cycle) != NXT_OK) { + return NXT_ERROR; + } + + if (nxt_user_cred_get(&cycle->user_cred, cycle->group) != NXT_OK) { + return NXT_ERROR; + } + + /* An engine's parameters. */ + + event_set = nxt_service_get(cycle->services, "engine", cycle->engine); + if (event_set == NULL) { + return NXT_ERROR; + } + + cycle->engine = event_set->name; + + prefix = nxt_file_name_is_absolute(cycle->pid) ? NULL : cycle->prefix; + + ret = nxt_file_name_create(cycle->mem_pool, &file_name, "%V%s%Z", + prefix, cycle->pid); + if (nxt_slow_path(ret != NXT_OK)) { + return NXT_ERROR; + } + + cycle->pid_file = file_name.start; + + prefix = nxt_file_name_is_absolute(cycle->error_log) ? NULL : cycle->prefix; + + ret = nxt_file_name_create(cycle->mem_pool, &file_name, "%V%s%Z", + prefix, cycle->error_log); + if (nxt_slow_path(ret != NXT_OK)) { + return NXT_ERROR; + } + + file = nxt_list_first(cycle->log_files); + file->name = file_name.start; + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_conf_read_cmd(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + char *p, **argv; + nxt_int_t n; + nxt_str_t addr; + nxt_sockaddr_t *sa; + + argv = nxt_process_argv; + + while (*argv != NULL) { + p = *argv++; + + if (nxt_strcmp(p, "--listen") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--listen\""); + return NXT_ERROR; + } + + p = *argv++; + + addr.len = nxt_strlen(p); + addr.data = (u_char *) p; + + sa = nxt_cycle_sockaddr_parse(&addr, cycle->mem_pool, thr->log); + + if (sa == NULL) { + return NXT_ERROR; + } + + cycle->listen = sa; + + continue; + } + + if (nxt_strcmp(p, "--workers") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--workers\""); + return NXT_ERROR; + } + + p = *argv++; + n = nxt_int_parse((u_char *) p, nxt_strlen(p)); + + if (n < 1) { + nxt_log_emerg(thr->log, "invalid number of workers: \"%s\"", p); + return NXT_ERROR; + } + + cycle->worker_processes = n; + + continue; + } + + if (nxt_strcmp(p, "--user") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--user\""); + return NXT_ERROR; + } + + p = *argv++; + + cycle->user_cred.user = p; + + continue; + } + + if (nxt_strcmp(p, "--group") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--group\""); + return NXT_ERROR; + } + + p = *argv++; + + cycle->group = p; + + continue; + } + + if (nxt_strcmp(p, "--pid") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--pid\""); + return NXT_ERROR; + } + + p = *argv++; + + cycle->pid = p; + + continue; + } + + if (nxt_strcmp(p, "--log") == 0) { + if (*argv == NULL) { + nxt_log_emerg(thr->log, "no argument for option \"--log\""); + return NXT_ERROR; + } + + p = *argv++; + + cycle->error_log = p; + + continue; + } + + if (nxt_strcmp(p, "--no-daemonize") == 0) { + cycle->daemon = 0; + continue; + } + } + + return NXT_OK; +} + + +static nxt_sockaddr_t * +nxt_cycle_sockaddr_parse(nxt_str_t *addr, nxt_mem_pool_t *mp, nxt_log_t *log) +{ + u_char *p; + size_t len; + + len = addr->len; + p = addr->data; + + if (len >= 5 && nxt_memcmp(p, (u_char *) "unix:", 5) == 0) { + return nxt_cycle_sockaddr_unix_parse(addr, mp, log); + } + + if (len != 0 && *p == '[') { + return nxt_cycle_sockaddr_inet6_parse(addr, mp, log); + } + + return nxt_cycle_sockaddr_inet_parse(addr, mp, log); +} + + +static nxt_sockaddr_t * +nxt_cycle_sockaddr_unix_parse(nxt_str_t *addr, nxt_mem_pool_t *mp, + nxt_log_t *log) +{ +#if (NXT_HAVE_UNIX_DOMAIN) + u_char *p; + size_t len, socklen; + nxt_sockaddr_t *sa; + + /* + * Actual sockaddr_un length can be lesser or even larger than defined + * struct sockaddr_un length (see comment in unix/nxt_socket.h). So + * limit maximum Unix domain socket address length by defined sun_path[] + * length because some OSes accept addresses twice larger than defined + * struct sockaddr_un. Also reserve space for a trailing zero to avoid + * ambiguity, since many OSes accept Unix domain socket addresses + * without a trailing zero. + */ + const size_t max_len = sizeof(struct sockaddr_un) + - offsetof(struct sockaddr_un, sun_path) - 1; + + /* cutting "unix:" */ + len = addr->len - 5; + p = addr->data + 5; + + if (len == 0) { + nxt_log_emerg(log, "unix domain socket \"%V\" name is invalid", addr); + return NULL; + } + + if (len > max_len) { + nxt_log_emerg(log, "unix domain socket \"%V\" name is too long", addr); + return NULL; + } + + socklen = offsetof(struct sockaddr_un, sun_path) + len + 1; + +#if (NXT_LINUX) + + /* + * Linux unix(7): + * + * abstract: an abstract socket address is distinguished by the fact + * that sun_path[0] is a null byte ('\0'). The socket's address in + * this namespace is given by the additional bytes in sun_path that + * are covered by the specified length of the address structure. + * (Null bytes in the name have no special significance.) + */ + if (p[0] == '@') { + p[0] = '\0'; + socklen--; + } + +#endif + + sa = nxt_sockaddr_alloc(mp, socklen); + + if (nxt_slow_path(sa == NULL)) { + return NULL; + } + + sa->type = SOCK_STREAM; + + sa->u.sockaddr_un.sun_family = AF_UNIX; + nxt_memcpy(sa->u.sockaddr_un.sun_path, p, len); + + return sa; + +#else /* !(NXT_HAVE_UNIX_DOMAIN) */ + + nxt_log_emerg(log, "unix domain socket \"%V\" is not supported", addr); + + return NULL; + +#endif +} + + +static nxt_sockaddr_t * +nxt_cycle_sockaddr_inet6_parse(nxt_str_t *addr, nxt_mem_pool_t *mp, + nxt_log_t *log) +{ +#if (NXT_INET6) + u_char *p, *addr, *addr_end; + size_t len; + nxt_int_t port; + nxt_mem_pool_t *mp; + nxt_sockaddr_t *sa; + struct in6_addr *in6_addr; + + len = addr->len - 1; + p = addr->data + 1; + + addr_end = nxt_memchr(p, ']', len); + + if (addr_end == NULL) { + goto invalid_address; + } + + sa = nxt_sockaddr_alloc(mp, sizeof(struct sockaddr_in6)); + + if (nxt_slow_path(sa == NULL)) { + return NULL; + } + + in6_addr = &sa->u.sockaddr_in6.sin6_addr; + + if (nxt_inet6_addr(in6_addr, p, addr_end - p) != NXT_OK) { + goto invalid_address; + } + + p = addr_end + 1; + len = (p + len) - p; + + if (len == 0) { + goto found; + } + + if (*p == ':') { + port = nxt_int_parse(p + 1, len - 1); + + if (port >= 1 && port <= 65535) { + goto found; + } + } + + nxt_log_emerg(log, "invalid port in \"%V\"", addr); + + return NULL; + +found: + + sa->type = SOCK_STREAM; + + sa->u.sockaddr_in6.sin6_family = AF_INET6; + sa->u.sockaddr_in6.sin6_port = htons((in_port_t) port); + + return sa; + +invalid_address: + + nxt_log_emerg(log, "invalid IPv6 address in \"%V\"", addr); + + return NULL; + +#else + + nxt_log_emerg(log, "IPv6 socket \"%V\" is not supported", addr); + + return NULL; + +#endif +} + + +static nxt_sockaddr_t * +nxt_cycle_sockaddr_inet_parse(nxt_str_t *addr, nxt_mem_pool_t *mp, + nxt_log_t *log) +{ + u_char *p, *ip; + size_t len; + in_addr_t s_addr; + nxt_int_t port; + nxt_sockaddr_t *sa; + + s_addr = INADDR_ANY; + + len = addr->len; + ip = addr->data; + + p = nxt_memchr(ip, ':', len); + + if (p == NULL) { + + /* single value port, or address */ + + port = nxt_int_parse(ip, len); + + if (port > 0) { + /* "*:XX" */ + + if (port < 1 || port > 65535) { + goto invalid_port; + } + + } else { + /* "x.x.x.x" */ + + s_addr = nxt_inet_addr(ip, len); + + if (s_addr == INADDR_NONE) { + goto invalid_port; + } + + port = 8080; + } + + } else { + + /* x.x.x.x:XX */ + + p++; + len = (ip + len) - p; + port = nxt_int_parse(p, len); + + if (port < 1 || port > 65535) { + goto invalid_port; + } + + len = (p - 1) - ip; + + if (len != 1 || ip[0] != '*') { + s_addr = nxt_inet_addr(ip, len); + + if (s_addr == INADDR_NONE) { + goto invalid_addr; + } + + /* "x.x.x.x:XX" */ + } + } + + sa = nxt_sockaddr_alloc(mp, sizeof(struct sockaddr_in)); + + if (nxt_slow_path(sa == NULL)) { + return NULL; + } + + sa->type = SOCK_STREAM; + + sa->u.sockaddr_in.sin_family = AF_INET; + sa->u.sockaddr_in.sin_port = htons((in_port_t) port); + sa->u.sockaddr_in.sin_addr.s_addr = s_addr; + + return sa; + +invalid_port: + + nxt_log_emerg(log, "invalid port in \"%V\"", addr); + + return NULL; + +invalid_addr: + + nxt_log_emerg(log, "invalid address in \"%V\"", addr); + + return NULL; +} + + +static nxt_int_t +nxt_cycle_conf_apply(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + if (nxt_cycle_log_files_create(cycle) != NXT_OK) { + return NXT_ERROR; + } + + if (nxt_cycle_listen_socket(cycle) != NXT_OK) { + return NXT_ERROR; + } + + if (nxt_cycle_event_engine_change(thr, cycle) != NXT_OK) { + return NXT_ERROR; + } + + if (nxt_cycle_listen_sockets_create(cycle) != NXT_OK) { + return NXT_ERROR; + } + + if (nxt_cycle_shm_zones_enable(cycle) != NXT_OK) { + return NXT_ERROR; + } + + nxt_cycle_listen_sockets_close(cycle); + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_listen_socket(nxt_cycle_t *cycle) +{ + nxt_sockaddr_t *sa; +// nxt_work_queue_t *wq; + nxt_listen_socket_t *ls; + + if (cycle->listen == NULL) { + sa = nxt_sockaddr_alloc(cycle->mem_pool, sizeof(struct sockaddr_in)); + if (sa == NULL) { + return NXT_ERROR; + } + + sa->type = SOCK_STREAM; + sa->u.sockaddr_in.sin_family = AF_INET; + sa->u.sockaddr_in.sin_port = htons(8080); + + cycle->listen = sa; + } + + if (nxt_sockaddr_text(cycle->mem_pool, cycle->listen, 1) != NXT_OK) { + return NXT_ERROR; + } + + ls = nxt_cycle_listen_socket_add(cycle, cycle->listen); + if (ls == NULL) { + return NXT_ERROR; + } + + ls->read_after_accept = 1; + +#if 0 + ls->flags = NXT_NONBLOCK; + + /* STUB */ + wq = nxt_mem_zalloc(cf->mem_pool, sizeof(nxt_work_queue_t)); + if (wq == NULL) { + return NXT_ERROR; + } + nxt_work_queue_name(wq, "listen"); + /**/ + + ls->work_queue = wq; + ls->handler = nxt_stream_connection_init; + + /* + * Connection memory pool chunk size is tunned to + * allocate the most data in one mem_pool chunk. + */ + ls->mem_pool_size = nxt_listen_socket_pool_min_size(ls) + + sizeof(nxt_event_conn_proxy_t) + + sizeof(nxt_event_conn_t) + + 4 * sizeof(nxt_buf_t); +#endif + + return NXT_OK; +} + + +nxt_listen_socket_t * +nxt_cycle_listen_socket_add(nxt_cycle_t *cycle, nxt_sockaddr_t *sa) +{ + nxt_mem_pool_t *mp; + nxt_listen_socket_t *ls; + + ls = nxt_array_zero_add(cycle->listen_sockets); + if (ls == NULL) { + return NULL; + } + + mp = cycle->mem_pool; + + ls->sockaddr = nxt_sockaddr_create(mp, &sa->u.sockaddr, nxt_socklen(sa)); + if (ls->sockaddr == NULL) { + return NULL; + } + + ls->sockaddr->type = sa->type; + + if (nxt_sockaddr_text(mp, ls->sockaddr, 1) != NXT_OK) { + return NULL; + } + + ls->socket = -1; + ls->backlog = NXT_LISTEN_BACKLOG; + + return ls; +} + + +static nxt_int_t +nxt_cycle_hostname(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + size_t len; + char hostname[NXT_MAXHOSTNAMELEN + 1]; + + if (gethostname(hostname, NXT_MAXHOSTNAMELEN) != 0) { + nxt_log_emerg(thr->log, "gethostname() failed %E", nxt_errno); + return NXT_ERROR; + } + + /* + * Linux gethostname(2): + * + * If the null-terminated hostname is too large to fit, + * then the name is truncated, and no error is returned. + * + * For this reason an additional byte is reserved in the buffer. + */ + hostname[NXT_MAXHOSTNAMELEN] = '\0'; + + len = nxt_strlen(hostname); + cycle->hostname.len = len; + + cycle->hostname.data = nxt_mem_nalloc(cycle->mem_pool, len); + + if (cycle->hostname.data != NULL) { + nxt_memcpy_lowcase(cycle->hostname.data, (u_char *) hostname, len); + return NXT_OK; + } + + return NXT_ERROR; +} + + +static nxt_int_t +nxt_cycle_log_files_init(nxt_cycle_t *cycle) +{ + nxt_uint_t n; + nxt_file_t *file; + nxt_list_t *log_files; + + n = (cycle->previous != NULL) ? nxt_list_nelts(cycle->previous->log_files): + 1; + + log_files = nxt_list_create(cycle->mem_pool, n, sizeof(nxt_file_t)); + + if (nxt_fast_path(log_files != NULL)) { + cycle->log_files = log_files; + + /* Preallocate the main error_log. This allocation cannot fail. */ + file = nxt_list_zero_add(log_files); + + file->fd = NXT_FILE_INVALID; + file->log_level = NXT_LOG_CRIT; + + return NXT_OK; + } + + return NXT_ERROR; +} + + +nxt_file_t * +nxt_cycle_log_file_add(nxt_cycle_t *cycle, nxt_str_t *name) +{ + nxt_int_t ret; + nxt_str_t *prefix; + nxt_file_t *file; + nxt_file_name_str_t file_name; + + prefix = nxt_file_name_is_absolute(name->data) ? NULL : cycle->prefix; + + ret = nxt_file_name_create(cycle->mem_pool, &file_name, "%V%V%Z", + prefix, name); + + if (nxt_slow_path(ret != NXT_OK)) { + return NULL; + } + + nxt_list_each(file, cycle->log_files) { + + /* STUB: hardecoded case sensitive/insensitive. */ + + if (file->name != NULL + && nxt_file_name_eq(file->name, file_name.start)) + { + return file; + } + + } nxt_list_loop; + + file = nxt_list_zero_add(cycle->log_files); + + if (nxt_slow_path(file == NULL)) { + return NULL; + } + + file->fd = NXT_FILE_INVALID; + file->log_level = NXT_LOG_CRIT; + file->name = file_name.start; + + return file; +} + + +static nxt_int_t +nxt_cycle_log_files_create(nxt_cycle_t *cycle) +{ + nxt_int_t ret; + nxt_file_t *file; + + nxt_list_each(file, cycle->log_files) { + + ret = nxt_file_open(file, NXT_FILE_APPEND, NXT_FILE_CREATE_OR_OPEN, + NXT_FILE_OWNER_ACCESS); + + if (ret != NXT_OK) { + return NXT_ERROR; + } + + } nxt_list_loop; + + file = nxt_list_first(cycle->log_files); + + return nxt_file_stderr(file); +} + + +static nxt_int_t +nxt_cycle_listen_sockets_create(nxt_cycle_t *cycle) +{ + nxt_uint_t c, p, ncurr, nprev; + nxt_listen_socket_t *curr, *prev; + + curr = cycle->listen_sockets->elts; + ncurr = cycle->listen_sockets->nelts; + + if (cycle->previous != NULL) { + prev = cycle->previous->listen_sockets->elts; + nprev = cycle->previous->listen_sockets->nelts; + + } else if (cycle->inherited_sockets != NULL) { + prev = cycle->inherited_sockets->elts; + nprev = cycle->inherited_sockets->nelts; + + } else { + prev = NULL; + nprev = 0; + } + + for (c = 0; c < ncurr; c++) { + + for (p = 0; p < nprev; p++) { + + if (nxt_sockaddr_cmp(curr[c].sockaddr, prev[p].sockaddr)) { + + if (nxt_listen_socket_update(&curr[c], &prev[p]) != NXT_OK) { + return NXT_ERROR; + } + + goto next; + } + } + + if (nxt_listen_socket_create(&curr[c], cycle->test_config) != NXT_OK) { + return NXT_ERROR; + } + + next: + + continue; + } + + return NXT_OK; +} + + +static void +nxt_cycle_listen_sockets_close(nxt_cycle_t *cycle) +{ + nxt_uint_t p, c, nprev, ncurr; + nxt_listen_socket_t *curr, *prev; + + if (cycle->previous == NULL) { + return; + } + + prev = cycle->previous->listen_sockets->elts; + nprev = cycle->previous->listen_sockets->nelts; + + curr = cycle->listen_sockets->elts; + ncurr = cycle->listen_sockets->nelts; + + for (p = 0; p < nprev; p++) { + + for (c = 0; c < ncurr; c++) { + if (nxt_sockaddr_cmp(prev[p].sockaddr, curr[c].sockaddr)) { + goto next; + } + } + + nxt_socket_close(prev[p].socket); + + next: + + continue; + } + + return; +} + + +nxt_int_t +nxt_cycle_listen_sockets_enable(nxt_thread_t *thr, nxt_cycle_t *cycle) +{ + nxt_uint_t i, n; + nxt_listen_socket_t *ls; + + ls = cycle->listen_sockets->elts; + n = cycle->listen_sockets->nelts; + + for (i = 0; i < n; i++) { + if (nxt_event_conn_listen(thr, &ls[i]) != NXT_OK) { + return NXT_ERROR; + } + } + + return NXT_OK; +} + + +nxt_str_t * +nxt_current_directory(nxt_mem_pool_t *mp) +{ + size_t len; + u_char *p; + nxt_str_t *name; + char buf[NXT_MAX_PATH_LEN]; + + len = nxt_dir_current(buf, NXT_MAX_PATH_LEN); + + if (nxt_fast_path(len != 0)) { + name = nxt_str_alloc(mp, len + 1); + + if (nxt_fast_path(name != NULL)) { + p = nxt_cpymem(name->data, buf, len); + *p = '/'; + + return name; + } + } + + return NULL; +} + + +nxt_int_t +nxt_cycle_pid_file_create(nxt_file_name_t *pid_file, nxt_bool_t test) +{ + ssize_t len; + nxt_int_t n; + nxt_uint_t create; + nxt_file_t file; + u_char pid[NXT_INT64_T_LEN + NXT_LINEFEED_SIZE]; + + nxt_memzero(&file, sizeof(nxt_file_t)); + + file.name = pid_file; + + create = test ? NXT_FILE_CREATE_OR_OPEN : NXT_FILE_TRUNCATE; + + n = nxt_file_open(&file, NXT_FILE_WRONLY, create, NXT_FILE_DEFAULT_ACCESS); + + if (n != NXT_OK) { + return NXT_ERROR; + } + + if (!test) { + len = nxt_sprintf(pid, pid + sizeof(pid), "%PI%n", nxt_pid) - pid; + + if (nxt_file_write(&file, pid, len, 0) != len) { + return NXT_ERROR; + } + } + + nxt_file_close(&file); + + return NXT_OK; +} + + +static void +nxt_cycle_pid_file_delete(nxt_cycle_t *cycle) +{ + nxt_file_name_t *pid_file; + + if (!cycle->test_config) { + pid_file = (cycle->new_binary != 0) ? cycle->oldbin_file: + cycle->pid_file; + if (pid_file != NULL) { + nxt_file_delete(pid_file); + } + } +} + + +nxt_int_t +nxt_cycle_shm_zone_add(nxt_cycle_t *cycle, nxt_str_t *name, size_t size, + nxt_uint_t page_size) +{ + nxt_cycle_shm_zone_t *shm_zone; + + if (cycle->shm_zones == NULL) { + cycle->shm_zones = nxt_array_create(cycle->mem_pool, 1, + sizeof(nxt_cycle_shm_zone_t)); + if (cycle->shm_zones == NULL) { + return NXT_ERROR; + } + } + + shm_zone = nxt_array_add(cycle->shm_zones); + + if (shm_zone != NULL) { + shm_zone->size = size; + shm_zone->page_size = page_size; + shm_zone->name = *name; + + return NXT_OK; + } + + return NXT_ERROR; +} + + +static nxt_int_t +nxt_cycle_shm_zones_enable(nxt_cycle_t *cycle) +{ + nxt_uint_t i, n; + nxt_cycle_shm_zone_t *shm_zone; + + if (cycle->shm_zones != NULL) { + shm_zone = cycle->shm_zones->elts; + n = cycle->shm_zones->nelts; + + for (i = 0; i < n; i++) { + if (nxt_cycle_shm_zone_create(&shm_zone[i]) != NXT_OK) { + return NXT_ERROR; + } + } + } + + return NXT_OK; +} + + +static nxt_int_t +nxt_cycle_shm_zone_create(nxt_cycle_shm_zone_t *shm_zone) +{ + nxt_mem_zone_t *zone; + + /* + * Unix-only code because Windows ASLR maps shared memory segments at + * different addresses in different processes. Unix ASLR does not affect + * this because all shared memory segments are inherited during fork(). + */ + + shm_zone->addr = nxt_mem_mmap(NULL, shm_zone->size, + NXT_MEM_MAP_READ | NXT_MEM_MAP_WRITE, + NXT_MEM_MAP_SHARED, NXT_FILE_INVALID, 0); + + if (shm_zone->addr != NXT_MEM_MAP_FAILED) { + + zone = nxt_mem_zone_init(shm_zone->addr, shm_zone->size, + shm_zone->page_size); + if (zone != NULL) { + return NXT_OK; + } + + nxt_mem_munmap(shm_zone->addr, shm_zone->size); + } + + return NXT_ERROR; +} |