Mercurial > hg > nginx-quic
view src/core/nginx.c @ 7681:38c0898b6df7 quic
HTTP/3.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Fri, 13 Mar 2020 19:36:33 +0300 |
parents | fdd6a070d518 |
children | 9c038f5e0464 |
line wrap: on
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <nginx.h> static void ngx_show_version_info(void); static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle); static void ngx_cleanup_environment(void *data); static ngx_int_t ngx_get_options(int argc, char *const *argv); static ngx_int_t ngx_process_options(ngx_cycle_t *cycle); static ngx_int_t ngx_save_argv(ngx_cycle_t *cycle, int argc, char *const *argv); static void *ngx_core_module_create_conf(ngx_cycle_t *cycle); static char *ngx_core_module_init_conf(ngx_cycle_t *cycle, void *conf); static char *ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_set_env(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_set_priority(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_set_cpu_affinity(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_set_worker_processes(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_load_module(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); #if (NGX_HAVE_DLOPEN) static void ngx_unload_module(void *data); #endif static ngx_conf_enum_t ngx_debug_points[] = { { ngx_string("stop"), NGX_DEBUG_POINTS_STOP }, { ngx_string("abort"), NGX_DEBUG_POINTS_ABORT }, { ngx_null_string, 0 } }; static ngx_command_t ngx_core_commands[] = { { ngx_string("daemon"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, 0, offsetof(ngx_core_conf_t, daemon), NULL }, { ngx_string("master_process"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, 0, offsetof(ngx_core_conf_t, master), NULL }, { ngx_string("timer_resolution"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, 0, offsetof(ngx_core_conf_t, timer_resolution), NULL }, { ngx_string("pid"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, 0, offsetof(ngx_core_conf_t, pid), NULL }, { ngx_string("lock_file"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, 0, offsetof(ngx_core_conf_t, lock_file), NULL }, { ngx_string("worker_processes"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_set_worker_processes, 0, 0, NULL }, { ngx_string("debug_points"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_enum_slot, 0, offsetof(ngx_core_conf_t, debug_points), &ngx_debug_points }, { ngx_string("user"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE12, ngx_set_user, 0, 0, NULL }, { ngx_string("worker_priority"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_set_priority, 0, 0, NULL }, { ngx_string("worker_cpu_affinity"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_1MORE, ngx_set_cpu_affinity, 0, 0, NULL }, { ngx_string("worker_rlimit_nofile"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, 0, offsetof(ngx_core_conf_t, rlimit_nofile), NULL }, { ngx_string("worker_rlimit_core"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_off_slot, 0, offsetof(ngx_core_conf_t, rlimit_core), NULL }, { ngx_string("worker_shutdown_timeout"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, 0, offsetof(ngx_core_conf_t, shutdown_timeout), NULL }, { ngx_string("working_directory"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, 0, offsetof(ngx_core_conf_t, working_directory), NULL }, { ngx_string("env"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_set_env, 0, 0, NULL }, { ngx_string("load_module"), NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, ngx_load_module, 0, 0, NULL }, ngx_null_command }; static ngx_core_module_t ngx_core_module_ctx = { ngx_string("core"), ngx_core_module_create_conf, ngx_core_module_init_conf }; ngx_module_t ngx_core_module = { NGX_MODULE_V1, &ngx_core_module_ctx, /* module context */ ngx_core_commands, /* module directives */ NGX_CORE_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_uint_t ngx_show_help; static ngx_uint_t ngx_show_version; static ngx_uint_t ngx_show_configure; static u_char *ngx_prefix; static u_char *ngx_conf_file; static u_char *ngx_conf_params; static char *ngx_signal; static char **ngx_os_environ; int ngx_cdecl main(int argc, char *const *argv) { ngx_buf_t *b; ngx_log_t *log; ngx_uint_t i; ngx_cycle_t *cycle, init_cycle; ngx_conf_dump_t *cd; ngx_core_conf_t *ccf; ngx_debug_init(); if (ngx_strerror_init() != NGX_OK) { return 1; } if (ngx_get_options(argc, argv) != NGX_OK) { return 1; } if (ngx_show_version) { ngx_show_version_info(); if (!ngx_test_config) { return 0; } } /* TODO */ ngx_max_sockets = -1; ngx_time_init(); #if (NGX_PCRE) ngx_regex_init(); #endif ngx_pid = ngx_getpid(); ngx_parent = ngx_getppid(); log = ngx_log_init(ngx_prefix); if (log == NULL) { return 1; } /* STUB */ #if (NGX_OPENSSL) ngx_ssl_init(log); #endif /* * init_cycle->log is required for signal handlers and * ngx_process_options() */ ngx_memzero(&init_cycle, sizeof(ngx_cycle_t)); init_cycle.log = log; ngx_cycle = &init_cycle; init_cycle.pool = ngx_create_pool(1024, log); if (init_cycle.pool == NULL) { return 1; } if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) { return 1; } if (ngx_process_options(&init_cycle) != NGX_OK) { return 1; } if (ngx_os_init(log) != NGX_OK) { return 1; } /* * ngx_crc32_table_init() requires ngx_cacheline_size set in ngx_os_init() */ if (ngx_crc32_table_init() != NGX_OK) { return 1; } /* * ngx_slab_sizes_init() requires ngx_pagesize set in ngx_os_init() */ ngx_slab_sizes_init(); if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) { return 1; } if (ngx_preinit_modules() != NGX_OK) { return 1; } cycle = ngx_init_cycle(&init_cycle); if (cycle == NULL) { if (ngx_test_config) { ngx_log_stderr(0, "configuration file %s test failed", init_cycle.conf_file.data); } return 1; } if (ngx_test_config) { if (!ngx_quiet_mode) { ngx_log_stderr(0, "configuration file %s test is successful", cycle->conf_file.data); } if (ngx_dump_config) { cd = cycle->config_dump.elts; for (i = 0; i < cycle->config_dump.nelts; i++) { ngx_write_stdout("# configuration file "); (void) ngx_write_fd(ngx_stdout, cd[i].name.data, cd[i].name.len); ngx_write_stdout(":" NGX_LINEFEED); b = cd[i].buffer; (void) ngx_write_fd(ngx_stdout, b->pos, b->last - b->pos); ngx_write_stdout(NGX_LINEFEED); } } return 0; } if (ngx_signal) { return ngx_signal_process(cycle, ngx_signal); } ngx_os_status(cycle->log); ngx_cycle = cycle; ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); if (ccf->master && ngx_process == NGX_PROCESS_SINGLE) { ngx_process = NGX_PROCESS_MASTER; } #if !(NGX_WIN32) if (ngx_init_signals(cycle->log) != NGX_OK) { return 1; } if (!ngx_inherited && ccf->daemon) { if (ngx_daemon(cycle->log) != NGX_OK) { return 1; } ngx_daemonized = 1; } if (ngx_inherited) { ngx_daemonized = 1; } #endif if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) { return 1; } if (ngx_log_redirect_stderr(cycle) != NGX_OK) { return 1; } if (log->file->fd != ngx_stderr) { if (ngx_close_file(log->file->fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_close_file_n " built-in log failed"); } } ngx_use_stderr = 0; if (ngx_process == NGX_PROCESS_SINGLE) { ngx_single_process_cycle(cycle); } else { ngx_master_process_cycle(cycle); } return 0; } static void ngx_show_version_info(void) { ngx_write_stderr("nginx version: " NGINX_VER_BUILD NGX_LINEFEED); if (ngx_show_help) { ngx_write_stderr( "Usage: nginx [-?hvVtTq] [-s signal] [-c filename] " "[-p prefix] [-g directives]" NGX_LINEFEED NGX_LINEFEED "Options:" NGX_LINEFEED " -?,-h : this help" NGX_LINEFEED " -v : show version and exit" NGX_LINEFEED " -V : show version and configure options then exit" NGX_LINEFEED " -t : test configuration and exit" NGX_LINEFEED " -T : test configuration, dump it and exit" NGX_LINEFEED " -q : suppress non-error messages " "during configuration testing" NGX_LINEFEED " -s signal : send signal to a master process: " "stop, quit, reopen, reload" NGX_LINEFEED #ifdef NGX_PREFIX " -p prefix : set prefix path (default: " NGX_PREFIX ")" NGX_LINEFEED #else " -p prefix : set prefix path (default: NONE)" NGX_LINEFEED #endif " -c filename : set configuration file (default: " NGX_CONF_PATH ")" NGX_LINEFEED " -g directives : set global directives out of configuration " "file" NGX_LINEFEED NGX_LINEFEED ); } if (ngx_show_configure) { #ifdef NGX_COMPILER ngx_write_stderr("built by " NGX_COMPILER NGX_LINEFEED); #endif #if (NGX_SSL) if (ngx_strcmp(ngx_ssl_version(), OPENSSL_VERSION_TEXT) == 0) { ngx_write_stderr("built with " OPENSSL_VERSION_TEXT NGX_LINEFEED); } else { ngx_write_stderr("built with " OPENSSL_VERSION_TEXT " (running with "); ngx_write_stderr((char *) (uintptr_t) ngx_ssl_version()); ngx_write_stderr(")" NGX_LINEFEED); } #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME ngx_write_stderr("TLS SNI support enabled" NGX_LINEFEED); #else ngx_write_stderr("TLS SNI support disabled" NGX_LINEFEED); #endif #endif ngx_write_stderr("configure arguments:" NGX_CONFIGURE NGX_LINEFEED); } } static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle) { u_char *p, *v, *inherited; ngx_int_t s; ngx_listening_t *ls; inherited = (u_char *) getenv(NGINX_VAR); if (inherited == NULL) { return NGX_OK; } ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "using inherited sockets from \"%s\"", inherited); if (ngx_array_init(&cycle->listening, cycle->pool, 10, sizeof(ngx_listening_t)) != NGX_OK) { return NGX_ERROR; } for (p = inherited, v = p; *p; p++) { if (*p == ':' || *p == ';') { s = ngx_atoi(v, p - v); if (s == NGX_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "invalid socket number \"%s\" in " NGINX_VAR " environment variable, ignoring the rest" " of the variable", v); break; } v = p + 1; ls = ngx_array_push(&cycle->listening); if (ls == NULL) { return NGX_ERROR; } ngx_memzero(ls, sizeof(ngx_listening_t)); ls->fd = (ngx_socket_t) s; } } if (v != p) { ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "invalid socket number \"%s\" in " NGINX_VAR " environment variable, ignoring", v); } ngx_inherited = 1; return ngx_set_inherited_sockets(cycle); } char ** ngx_set_environment(ngx_cycle_t *cycle, ngx_uint_t *last) { char **p, **env; ngx_str_t *var; ngx_uint_t i, n; ngx_core_conf_t *ccf; ngx_pool_cleanup_t *cln; ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); if (last == NULL && ccf->environment) { return ccf->environment; } var = ccf->env.elts; for (i = 0; i < ccf->env.nelts; i++) { if (ngx_strcmp(var[i].data, "TZ") == 0 || ngx_strncmp(var[i].data, "TZ=", 3) == 0) { goto tz_found; } } var = ngx_array_push(&ccf->env); if (var == NULL) { return NULL; } var->len = 2; var->data = (u_char *) "TZ"; var = ccf->env.elts; tz_found: n = 0; for (i = 0; i < ccf->env.nelts; i++) { if (var[i].data[var[i].len] == '=') { n++; continue; } for (p = ngx_os_environ; *p; p++) { if (ngx_strncmp(*p, var[i].data, var[i].len) == 0 && (*p)[var[i].len] == '=') { n++; break; } } } if (last) { env = ngx_alloc((*last + n + 1) * sizeof(char *), cycle->log); if (env == NULL) { return NULL; } *last = n; } else { cln = ngx_pool_cleanup_add(cycle->pool, 0); if (cln == NULL) { return NULL; } env = ngx_alloc((n + 1) * sizeof(char *), cycle->log); if (env == NULL) { return NULL; } cln->handler = ngx_cleanup_environment; cln->data = env; } n = 0; for (i = 0; i < ccf->env.nelts; i++) { if (var[i].data[var[i].len] == '=') { env[n++] = (char *) var[i].data; continue; } for (p = ngx_os_environ; *p; p++) { if (ngx_strncmp(*p, var[i].data, var[i].len) == 0 && (*p)[var[i].len] == '=') { env[n++] = *p; break; } } } env[n] = NULL; if (last == NULL) { ccf->environment = env; environ = env; } return env; } static void ngx_cleanup_environment(void *data) { char **env = data; if (environ == env) { /* * if the environment is still used, as it happens on exit, * the only option is to leak it */ return; } ngx_free(env); } ngx_pid_t ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv) { char **env, *var; u_char *p; ngx_uint_t i, n; ngx_pid_t pid; ngx_exec_ctx_t ctx; ngx_core_conf_t *ccf; ngx_listening_t *ls; ngx_memzero(&ctx, sizeof(ngx_exec_ctx_t)); ctx.path = argv[0]; ctx.name = "new binary process"; ctx.argv = argv; n = 2; env = ngx_set_environment(cycle, &n); if (env == NULL) { return NGX_INVALID_PID; } var = ngx_alloc(sizeof(NGINX_VAR) + cycle->listening.nelts * (NGX_INT32_LEN + 1) + 2, cycle->log); if (var == NULL) { ngx_free(env); return NGX_INVALID_PID; } p = ngx_cpymem(var, NGINX_VAR "=", sizeof(NGINX_VAR)); ls = cycle->listening.elts; for (i = 0; i < cycle->listening.nelts; i++) { p = ngx_sprintf(p, "%ud;", ls[i].fd); } *p = '\0'; env[n++] = var; #if (NGX_SETPROCTITLE_USES_ENV) /* allocate the spare 300 bytes for the new binary process title */ env[n++] = "SPARE=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; #endif env[n] = NULL; #if (NGX_DEBUG) { char **e; for (e = env; *e; e++) { ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, "env: %s", *e); } } #endif ctx.envp = (char *const *) env; ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); if (ngx_rename_file(ccf->pid.data, ccf->oldpid.data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_rename_file_n " %s to %s failed " "before executing new binary process \"%s\"", ccf->pid.data, ccf->oldpid.data, argv[0]); ngx_free(env); ngx_free(var); return NGX_INVALID_PID; } pid = ngx_execute(cycle, &ctx); if (pid == NGX_INVALID_PID) { if (ngx_rename_file(ccf->oldpid.data, ccf->pid.data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_rename_file_n " %s back to %s failed after " "an attempt to execute new binary process \"%s\"", ccf->oldpid.data, ccf->pid.data, argv[0]); } } ngx_free(env); ngx_free(var); return pid; } static ngx_int_t ngx_get_options(int argc, char *const *argv) { u_char *p; ngx_int_t i; for (i = 1; i < argc; i++) { p = (u_char *) argv[i]; if (*p++ != '-') { ngx_log_stderr(0, "invalid option: \"%s\"", argv[i]); return NGX_ERROR; } while (*p) { switch (*p++) { case '?': case 'h': ngx_show_version = 1; ngx_show_help = 1; break; case 'v': ngx_show_version = 1; break; case 'V': ngx_show_version = 1; ngx_show_configure = 1; break; case 't': ngx_test_config = 1; break; case 'T': ngx_test_config = 1; ngx_dump_config = 1; break; case 'q': ngx_quiet_mode = 1; break; case 'p': if (*p) { ngx_prefix = p; goto next; } if (argv[++i]) { ngx_prefix = (u_char *) argv[i]; goto next; } ngx_log_stderr(0, "option \"-p\" requires directory name"); return NGX_ERROR; case 'c': if (*p) { ngx_conf_file = p; goto next; } if (argv[++i]) { ngx_conf_file = (u_char *) argv[i]; goto next; } ngx_log_stderr(0, "option \"-c\" requires file name"); return NGX_ERROR; case 'g': if (*p) { ngx_conf_params = p; goto next; } if (argv[++i]) { ngx_conf_params = (u_char *) argv[i]; goto next; } ngx_log_stderr(0, "option \"-g\" requires parameter"); return NGX_ERROR; case 's': if (*p) { ngx_signal = (char *) p; } else if (argv[++i]) { ngx_signal = argv[i]; } else { ngx_log_stderr(0, "option \"-s\" requires parameter"); return NGX_ERROR; } if (ngx_strcmp(ngx_signal, "stop") == 0 || ngx_strcmp(ngx_signal, "quit") == 0 || ngx_strcmp(ngx_signal, "reopen") == 0 || ngx_strcmp(ngx_signal, "reload") == 0) { ngx_process = NGX_PROCESS_SIGNALLER; goto next; } ngx_log_stderr(0, "invalid option: \"-s %s\"", ngx_signal); return NGX_ERROR; default: ngx_log_stderr(0, "invalid option: \"%c\"", *(p - 1)); return NGX_ERROR; } } next: continue; } return NGX_OK; } static ngx_int_t ngx_save_argv(ngx_cycle_t *cycle, int argc, char *const *argv) { #if (NGX_FREEBSD) ngx_os_argv = (char **) argv; ngx_argc = argc; ngx_argv = (char **) argv; #else size_t len; ngx_int_t i; ngx_os_argv = (char **) argv; ngx_argc = argc; ngx_argv = ngx_alloc((argc + 1) * sizeof(char *), cycle->log); if (ngx_argv == NULL) { return NGX_ERROR; } for (i = 0; i < argc; i++) { len = ngx_strlen(argv[i]) + 1; ngx_argv[i] = ngx_alloc(len, cycle->log); if (ngx_argv[i] == NULL) { return NGX_ERROR; } (void) ngx_cpystrn((u_char *) ngx_argv[i], (u_char *) argv[i], len); } ngx_argv[i] = NULL; #endif ngx_os_environ = environ; return NGX_OK; } static ngx_int_t ngx_process_options(ngx_cycle_t *cycle) { u_char *p; size_t len; if (ngx_prefix) { len = ngx_strlen(ngx_prefix); p = ngx_prefix; if (len && !ngx_path_separator(p[len - 1])) { p = ngx_pnalloc(cycle->pool, len + 1); if (p == NULL) { return NGX_ERROR; } ngx_memcpy(p, ngx_prefix, len); p[len++] = '/'; } cycle->conf_prefix.len = len; cycle->conf_prefix.data = p; cycle->prefix.len = len; cycle->prefix.data = p; } else { #ifndef NGX_PREFIX p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH); if (p == NULL) { return NGX_ERROR; } if (ngx_getcwd(p, NGX_MAX_PATH) == 0) { ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed"); return NGX_ERROR; } len = ngx_strlen(p); p[len++] = '/'; cycle->conf_prefix.len = len; cycle->conf_prefix.data = p; cycle->prefix.len = len; cycle->prefix.data = p; #else #ifdef NGX_CONF_PREFIX ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX); #else ngx_str_set(&cycle->conf_prefix, NGX_PREFIX); #endif ngx_str_set(&cycle->prefix, NGX_PREFIX); #endif } if (ngx_conf_file) { cycle->conf_file.len = ngx_strlen(ngx_conf_file); cycle->conf_file.data = ngx_conf_file; } else { ngx_str_set(&cycle->conf_file, NGX_CONF_PATH); } if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) { return NGX_ERROR; } for (p = cycle->conf_file.data + cycle->conf_file.len - 1; p > cycle->conf_file.data; p--) { if (ngx_path_separator(*p)) { cycle->conf_prefix.len = p - cycle->conf_file.data + 1; cycle->conf_prefix.data = cycle->conf_file.data; break; } } if (ngx_conf_params) { cycle->conf_param.len = ngx_strlen(ngx_conf_params); cycle->conf_param.data = ngx_conf_params; } if (ngx_test_config) { cycle->log->log_level = NGX_LOG_INFO; } return NGX_OK; } static void * ngx_core_module_create_conf(ngx_cycle_t *cycle) { ngx_core_conf_t *ccf; ccf = ngx_pcalloc(cycle->pool, sizeof(ngx_core_conf_t)); if (ccf == NULL) { return NULL; } /* * set by ngx_pcalloc() * * ccf->pid = NULL; * ccf->oldpid = NULL; * ccf->priority = 0; * ccf->cpu_affinity_auto = 0; * ccf->cpu_affinity_n = 0; * ccf->cpu_affinity = NULL; */ ccf->daemon = NGX_CONF_UNSET; ccf->master = NGX_CONF_UNSET; ccf->timer_resolution = NGX_CONF_UNSET_MSEC; ccf->shutdown_timeout = NGX_CONF_UNSET_MSEC; ccf->worker_processes = NGX_CONF_UNSET; ccf->debug_points = NGX_CONF_UNSET; ccf->rlimit_nofile = NGX_CONF_UNSET; ccf->rlimit_core = NGX_CONF_UNSET; ccf->user = (ngx_uid_t) NGX_CONF_UNSET_UINT; ccf->group = (ngx_gid_t) NGX_CONF_UNSET_UINT; if (ngx_array_init(&ccf->env, cycle->pool, 1, sizeof(ngx_str_t)) != NGX_OK) { return NULL; } return ccf; } static char * ngx_core_module_init_conf(ngx_cycle_t *cycle, void *conf) { ngx_core_conf_t *ccf = conf; ngx_conf_init_value(ccf->daemon, 1); ngx_conf_init_value(ccf->master, 1); ngx_conf_init_msec_value(ccf->timer_resolution, 0); ngx_conf_init_msec_value(ccf->shutdown_timeout, 0); ngx_conf_init_value(ccf->worker_processes, 1); ngx_conf_init_value(ccf->debug_points, 0); #if (NGX_HAVE_CPU_AFFINITY) if (!ccf->cpu_affinity_auto && ccf->cpu_affinity_n && ccf->cpu_affinity_n != 1 && ccf->cpu_affinity_n != (ngx_uint_t) ccf->worker_processes) { ngx_log_error(NGX_LOG_WARN, cycle->log, 0, "the number of \"worker_processes\" is not equal to " "the number of \"worker_cpu_affinity\" masks, " "using last mask for remaining worker processes"); } #endif if (ccf->pid.len == 0) { ngx_str_set(&ccf->pid, NGX_PID_PATH); } if (ngx_conf_full_name(cycle, &ccf->pid, 0) != NGX_OK) { return NGX_CONF_ERROR; } ccf->oldpid.len = ccf->pid.len + sizeof(NGX_OLDPID_EXT); ccf->oldpid.data = ngx_pnalloc(cycle->pool, ccf->oldpid.len); if (ccf->oldpid.data == NULL) { return NGX_CONF_ERROR; } ngx_memcpy(ngx_cpymem(ccf->oldpid.data, ccf->pid.data, ccf->pid.len), NGX_OLDPID_EXT, sizeof(NGX_OLDPID_EXT)); #if !(NGX_WIN32) if (ccf->user == (uid_t) NGX_CONF_UNSET_UINT && geteuid() == 0) { struct group *grp; struct passwd *pwd; ngx_set_errno(0); pwd = getpwnam(NGX_USER); if (pwd == NULL) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "getpwnam(\"" NGX_USER "\") failed"); return NGX_CONF_ERROR; } ccf->username = NGX_USER; ccf->user = pwd->pw_uid; ngx_set_errno(0); grp = getgrnam(NGX_GROUP); if (grp == NULL) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "getgrnam(\"" NGX_GROUP "\") failed"); return NGX_CONF_ERROR; } ccf->group = grp->gr_gid; } if (ccf->lock_file.len == 0) { ngx_str_set(&ccf->lock_file, NGX_LOCK_PATH); } if (ngx_conf_full_name(cycle, &ccf->lock_file, 0) != NGX_OK) { return NGX_CONF_ERROR; } { ngx_str_t lock_file; lock_file = cycle->old_cycle->lock_file; if (lock_file.len) { lock_file.len--; if (ccf->lock_file.len != lock_file.len || ngx_strncmp(ccf->lock_file.data, lock_file.data, lock_file.len) != 0) { ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "\"lock_file\" could not be changed, ignored"); } cycle->lock_file.len = lock_file.len + 1; lock_file.len += sizeof(".accept"); cycle->lock_file.data = ngx_pstrdup(cycle->pool, &lock_file); if (cycle->lock_file.data == NULL) { return NGX_CONF_ERROR; } } else { cycle->lock_file.len = ccf->lock_file.len + 1; cycle->lock_file.data = ngx_pnalloc(cycle->pool, ccf->lock_file.len + sizeof(".accept")); if (cycle->lock_file.data == NULL) { return NGX_CONF_ERROR; } ngx_memcpy(ngx_cpymem(cycle->lock_file.data, ccf->lock_file.data, ccf->lock_file.len), ".accept", sizeof(".accept")); } } #endif return NGX_CONF_OK; } static char * ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { #if (NGX_WIN32) ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "\"user\" is not supported, ignored"); return NGX_CONF_OK; #else ngx_core_conf_t *ccf = conf; char *group; struct passwd *pwd; struct group *grp; ngx_str_t *value; if (ccf->user != (uid_t) NGX_CONF_UNSET_UINT) { return "is duplicate"; } if (geteuid() != 0) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "the \"user\" directive makes sense only " "if the master process runs " "with super-user privileges, ignored"); return NGX_CONF_OK; } value = cf->args->elts; ccf->username = (char *) value[1].data; ngx_set_errno(0); pwd = getpwnam((const char *) value[1].data); if (pwd == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, "getpwnam(\"%s\") failed", value[1].data); return NGX_CONF_ERROR; } ccf->user = pwd->pw_uid; group = (char *) ((cf->args->nelts == 2) ? value[1].data : value[2].data); ngx_set_errno(0); grp = getgrnam(group); if (grp == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, "getgrnam(\"%s\") failed", group); return NGX_CONF_ERROR; } ccf->group = grp->gr_gid; return NGX_CONF_OK; #endif } static char * ngx_set_env(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_core_conf_t *ccf = conf; ngx_str_t *value, *var; ngx_uint_t i; var = ngx_array_push(&ccf->env); if (var == NULL) { return NGX_CONF_ERROR; } value = cf->args->elts; *var = value[1]; for (i = 0; i < value[1].len; i++) { if (value[1].data[i] == '=') { var->len = i; return NGX_CONF_OK; } } return NGX_CONF_OK; } static char * ngx_set_priority(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_core_conf_t *ccf = conf; ngx_str_t *value; ngx_uint_t n, minus; if (ccf->priority != 0) { return "is duplicate"; } value = cf->args->elts; if (value[1].data[0] == '-') { n = 1; minus = 1; } else if (value[1].data[0] == '+') { n = 1; minus = 0; } else { n = 0; minus = 0; } ccf->priority = ngx_atoi(&value[1].data[n], value[1].len - n); if (ccf->priority == NGX_ERROR) { return "invalid number"; } if (minus) { ccf->priority = -ccf->priority; } return NGX_CONF_OK; } static char * ngx_set_cpu_affinity(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { #if (NGX_HAVE_CPU_AFFINITY) ngx_core_conf_t *ccf = conf; u_char ch, *p; ngx_str_t *value; ngx_uint_t i, n; ngx_cpuset_t *mask; if (ccf->cpu_affinity) { return "is duplicate"; } mask = ngx_palloc(cf->pool, (cf->args->nelts - 1) * sizeof(ngx_cpuset_t)); if (mask == NULL) { return NGX_CONF_ERROR; } ccf->cpu_affinity_n = cf->args->nelts - 1; ccf->cpu_affinity = mask; value = cf->args->elts; if (ngx_strcmp(value[1].data, "auto") == 0) { if (cf->args->nelts > 3) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid number of arguments in " "\"worker_cpu_affinity\" directive"); return NGX_CONF_ERROR; } ccf->cpu_affinity_auto = 1; CPU_ZERO(&mask[0]); for (i = 0; i < (ngx_uint_t) ngx_min(ngx_ncpu, CPU_SETSIZE); i++) { CPU_SET(i, &mask[0]); } n = 2; } else { n = 1; } for ( /* void */ ; n < cf->args->nelts; n++) { if (value[n].len > CPU_SETSIZE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"worker_cpu_affinity\" supports up to %d CPUs only", CPU_SETSIZE); return NGX_CONF_ERROR; } i = 0; CPU_ZERO(&mask[n - 1]); for (p = value[n].data + value[n].len - 1; p >= value[n].data; p--) { ch = *p; if (ch == ' ') { continue; } i++; if (ch == '0') { continue; } if (ch == '1') { CPU_SET(i - 1, &mask[n - 1]); continue; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid character \"%c\" in \"worker_cpu_affinity\"", ch); return NGX_CONF_ERROR; } } #else ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "\"worker_cpu_affinity\" is not supported " "on this platform, ignored"); #endif return NGX_CONF_OK; } ngx_cpuset_t * ngx_get_cpu_affinity(ngx_uint_t n) { #if (NGX_HAVE_CPU_AFFINITY) ngx_uint_t i, j; ngx_cpuset_t *mask; ngx_core_conf_t *ccf; static ngx_cpuset_t result; ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx, ngx_core_module); if (ccf->cpu_affinity == NULL) { return NULL; } if (ccf->cpu_affinity_auto) { mask = &ccf->cpu_affinity[ccf->cpu_affinity_n - 1]; for (i = 0, j = n; /* void */ ; i++) { if (CPU_ISSET(i % CPU_SETSIZE, mask) && j-- == 0) { break; } if (i == CPU_SETSIZE && j == n) { /* empty mask */ return NULL; } /* void */ } CPU_ZERO(&result); CPU_SET(i % CPU_SETSIZE, &result); return &result; } if (ccf->cpu_affinity_n > n) { return &ccf->cpu_affinity[n]; } return &ccf->cpu_affinity[ccf->cpu_affinity_n - 1]; #else return NULL; #endif } static char * ngx_set_worker_processes(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_str_t *value; ngx_core_conf_t *ccf; ccf = (ngx_core_conf_t *) conf; if (ccf->worker_processes != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; if (ngx_strcmp(value[1].data, "auto") == 0) { ccf->worker_processes = ngx_ncpu; return NGX_CONF_OK; } ccf->worker_processes = ngx_atoi(value[1].data, value[1].len); if (ccf->worker_processes == NGX_ERROR) { return "invalid value"; } return NGX_CONF_OK; } static char * ngx_load_module(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { #if (NGX_HAVE_DLOPEN) void *handle; char **names, **order; ngx_str_t *value, file; ngx_uint_t i; ngx_module_t *module, **modules; ngx_pool_cleanup_t *cln; if (cf->cycle->modules_used) { return "is specified too late"; } value = cf->args->elts; file = value[1]; if (ngx_conf_full_name(cf->cycle, &file, 0) != NGX_OK) { return NGX_CONF_ERROR; } cln = ngx_pool_cleanup_add(cf->cycle->pool, 0); if (cln == NULL) { return NGX_CONF_ERROR; } handle = ngx_dlopen(file.data); if (handle == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, ngx_dlopen_n " \"%s\" failed (%s)", file.data, ngx_dlerror()); return NGX_CONF_ERROR; } cln->handler = ngx_unload_module; cln->data = handle; modules = ngx_dlsym(handle, "ngx_modules"); if (modules == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, ngx_dlsym_n " \"%V\", \"%s\" failed (%s)", &value[1], "ngx_modules", ngx_dlerror()); return NGX_CONF_ERROR; } names = ngx_dlsym(handle, "ngx_module_names"); if (names == NULL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, ngx_dlsym_n " \"%V\", \"%s\" failed (%s)", &value[1], "ngx_module_names", ngx_dlerror()); return NGX_CONF_ERROR; } order = ngx_dlsym(handle, "ngx_module_order"); for (i = 0; modules[i]; i++) { module = modules[i]; module->name = names[i]; if (ngx_add_module(cf, &file, module, order) != NGX_OK) { return NGX_CONF_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_CORE, cf->log, 0, "module: %s i:%ui", module->name, module->index); } return NGX_CONF_OK; #else ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"load_module\" is not supported " "on this platform"); return NGX_CONF_ERROR; #endif } #if (NGX_HAVE_DLOPEN) static void ngx_unload_module(void *data) { void *handle = data; if (ngx_dlclose(handle) != 0) { ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, ngx_dlclose_n " failed (%s)", ngx_dlerror()); } } #endif