Exemple #1
0
void
ngx_debug_point(void)
{
    ngx_core_conf_t  *ccf;

    ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
                                           ngx_core_module);

    switch (ccf->debug_points) {

    case NGX_DEBUG_POINTS_STOP:
        raise(SIGSTOP);
        break;

    case NGX_DEBUG_POINTS_ABORT:
        ngx_abort();
    }
}
static ngx_int_t
ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t type)
{
    ngx_int_t         n;
    ngx_core_conf_t  *ccf;

    ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start worker processes");

    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);

    for (n = 0; n < ccf->worker_processes; n++) {
        if (ngx_spawn_process(cycle, "worker", type) == NGX_INVALID_PID) {
            break;
        }
    }

    return n;
}
Exemple #3
0
u_long
ngx_get_cpu_affinity(ngx_uint_t n)
{
    ngx_core_conf_t  *ccf;

    ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
                                           ngx_core_module);

    if (ccf->cpu_affinity == NULL) {
        return 0;
    }

    if (ccf->cpu_affinity_n > n) {
        return ccf->cpu_affinity[n];
    }

    return ccf->cpu_affinity[ccf->cpu_affinity_n - 1];
}
static void
ngx_http_groonga_exit_process(ngx_cycle_t *cycle)
{
  ngx_http_conf_ctx_t *http_conf;
  ngx_http_groonga_database_callback_data_t data;

  http_conf =
    (ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);
  data.log = cycle->log;
  data.pool = cycle->pool;
  ngx_http_groonga_each_loc_conf(http_conf,
                                 ngx_http_groonga_close_database_callback,
                                 &data);

  grn_fin();

  return;
}
static ngx_int_t
ngx_squ_file_module_init(ngx_cycle_t *cycle)
{
    int              n;
    ngx_squ_conf_t  *scf;

    ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "squ file module init");

    scf = (ngx_squ_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_squ_module);

    squ_getglobal(scf->l, NGX_SQU_TABLE);

    squL_newmetatable(scf->l, NGX_SQU_FILE);
    squ_pushvalue(scf->l, -1);
    squ_setfield(scf->l, -2, "__index");

    for (n = 0; ngx_squ_file_methods[n].name != NULL; n++) {
        squ_pushcfunction(scf->l, ngx_squ_file_methods[n].func);
        squ_setfield(scf->l, -2, ngx_squ_file_methods[n].name);
    }

    squ_pop(scf->l, 1);

    n = sizeof(ngx_squ_file_consts) / sizeof(ngx_squ_const_t) - 1;
    n += 2;

    squ_createtable(scf->l, 0, n);

    for (n = 0; ngx_squ_file_consts[n].name != NULL; n++) {
        squ_pushinteger(scf->l, ngx_squ_file_consts[n].value);
        squ_setfield(scf->l, -2, ngx_squ_file_consts[n].name);
    }

    squ_pushcfunction(scf->l, ngx_squ_file_open);
    squ_setfield(scf->l, -2, "open");
    squ_pushcfunction(scf->l, ngx_squ_file_info);
    squ_setfield(scf->l, -2, "attributes");

    squ_setfield(scf->l, -2, "file");

    squ_pop(scf->l, 1);

    return NGX_OK;
}
Exemple #6
0
static ngx_int_t
ngx_zeromq_process_init(ngx_cycle_t *cycle)
{
    ngx_zeromq_conf_t  *zcf;

    zcf = (ngx_zeromq_conf_t *) ngx_get_conf(cycle->conf_ctx,
                                             ngx_zeromq_module);

    if (zmq_used) {
        zmq_context = zmq_init(zcf->threads);

        if (zmq_context == NULL) {
            ngx_zeromq_log_error(cycle->log, "zmq_init()");
            return NGX_ERROR;
        }
    }

    return NGX_OK;
}
ngx_thread_pool_t *
ngx_thread_pool_get(ngx_cycle_t *cycle, ngx_str_t *name)
{
    ngx_uint_t                i;
    ngx_thread_pool_t       **tpp;
    ngx_thread_pool_conf_t   *tcf;
    tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cycle->conf_ctx,
            ngx_thread_pool_module);
    tpp = tcf->pools.elts;
    for (i = 0; i < tcf->pools.nelts; i++)
    {
        if (tpp[i]->name.len == name->len
                && ngx_strncmp(tpp[i]->name.data, name->data, name->len) == 0)
        {
            return tpp[i];
        }
    }
    return NULL;
}
Exemple #8
0
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);
    file.name = ccf->pid;
    file.log = cycle->log;
//打开pid文件,过滤掉里面的空格,找出pid进程id
    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_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);

}
Exemple #9
0
ngx_int_t  ngx_http_shmtest_init_process(ngx_cycle_t *cycle)
{
	shmtest_main_conf_t* conf =  (shmtest_main_conf_t*)ngx_get_conf(cycle->conf_ctx, ngx_http_shmtest_module);
	if(conf == NULL){
		NLOG_INFO("conf is null!");
		return 0;
	}

	printf("process [%d] inited!\n", ngx_getpid());
	//多进程并发测试
	int i;
	int64_t ret=0;
	for(i=0;i<10000;i++){
		ngx_str_t key = ngx_string("test");
		ngx_shmap_inc_int(conf->shmap, &key, 1, 0, &ret);
	}
	printf("process [%d] init ok! ret=%lld\n", ngx_getpid(), (long long)ret);

	return 0;
}
static void
ngx_rtmp_auto_push_exit_process(ngx_cycle_t *cycle)
{
#if (NGX_HAVE_UNIX_DOMAIN)
    ngx_rtmp_auto_push_conf_t  *apcf;
    u_char                      path[NGX_MAX_PATH];

    apcf = (ngx_rtmp_auto_push_conf_t *) ngx_get_conf(cycle->conf_ctx,
                                                    ngx_rtmp_auto_push_module);
    if (apcf->auto_push == 0) {
        return;
    }
    *ngx_snprintf(path, sizeof(path),
                  "%V/" NGX_RTMP_AUTO_PUSH_SOCKNAME ".%i",
                  &apcf->socket_dir, ngx_process_slot)
         = 0;

    ngx_delete_file(path);

#endif
}
static void
ngx_console_init(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->daemon) {
        if (FreeConsole() == 0) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "FreeConsole() failed");
        }

        return;
    }

    if (SetConsoleCtrlHandler(ngx_console_handler, 1) == 0) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                      "SetConsoleCtrlHandler() failed");
    }
}
//检查是否已经有该name的ngx_thread_pool_t,有则直接返回,没有则创建并添加到ngx_thread_pool_conf_t中
ngx_thread_pool_t *
ngx_thread_pool_add(ngx_conf_t *cf, ngx_str_t *name)
{
    ngx_thread_pool_t       *tp, **tpp;
    ngx_thread_pool_conf_t  *tcf;

    if (name == NULL) {
        name = &ngx_thread_pool_default;
    }
    
    //检查该名字的线程池是否已经存在,存在则直接返回以前的线程池ngx_thread_pool_t,没有返回NULL
    tp = ngx_thread_pool_get(cf->cycle, name);

    if (tp) {
        return tp;
    }

    //创建新的ngx_thread_pool_t
    tp = ngx_pcalloc(cf->pool, sizeof(ngx_thread_pool_t));
    if (tp == NULL) {
        return NULL;
    }

    tp->name = *name;
    tp->file = cf->conf_file->file.name.data;
    tp->line = cf->conf_file->line;

    tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cf->cycle->conf_ctx,
                                                  ngx_thread_pool_module);

    tpp = ngx_array_push(&tcf->pools);
    if (tpp == NULL) {
        return NULL;
    }

    *tpp = tp;

    return tp;
}
Exemple #13
0
void
ngx_show_dso_directives(ngx_conf_t *cf)
{
    ngx_str_t            name;
    ngx_uint_t           i;
    ngx_module_t        *module;
    ngx_command_t       *cmd;
    ngx_dso_module_t    *dm;
    ngx_dso_conf_ctx_t  *ctx;

    ctx = (ngx_dso_conf_ctx_t *) ngx_get_conf(cf->cycle->conf_ctx,
                                              ngx_dso_module);

    if (ctx == NULL || ctx->modules == NULL) {
        return;
    }

    dm = ctx->modules->elts;

    for (i = 0; i < ctx->modules->nelts; i++) {
        if (dm[i].name.len == 0) {
            continue;
        }

        name = dm[i].name;
        module = dm[i].module;

        ngx_log_stderr(0, "%V (shared):", &name);

        cmd = module->commands;
        if(cmd == NULL) {
            continue;
        }

        for ( /* void */ ; cmd->name.len; cmd++) {
            ngx_log_stderr(0, "    %V", &cmd->name);
        }
    }
}
static ngx_int_t
ngx_lua_http_btt_module_init(ngx_cycle_t *cycle)
{
    ngx_lua_conf_t  *lcf;

    ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
                   "lua http btt module init");

    lcf = (ngx_lua_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_lua_module);

    lua_getglobal(lcf->l, NGX_LUA_TABLE);
    lua_getfield(lcf->l, -1, NGX_LUA_HTTP_TABLE);

    lua_createtable(lcf->l, 0, 1);
    lua_pushcfunction(lcf->l, ngx_lua_http_btt_announce);
    lua_setfield(lcf->l, -2, "announce");
    lua_setfield(lcf->l, -2, "btt");

    lua_pop(lcf->l, 2);

    return NGX_OK;
}
static ngx_int_t
ngx_http_groonga_init_process(ngx_cycle_t *cycle)
{
  grn_rc rc;
  ngx_http_conf_ctx_t *http_conf;
  ngx_http_groonga_database_callback_data_t data;

  rc = grn_init();
  if (rc != GRN_SUCCESS) {
    return NGX_ERROR;
  }

  http_conf =
    (ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);
  data.log = cycle->log;
  data.pool = cycle->pool;
  data.rc = NGX_OK;
  ngx_http_groonga_each_loc_conf(http_conf,
                                 ngx_http_groonga_open_database_callback,
                                 &data);

  return data.rc;
}
static ngx_int_t
ngx_zeromq_process_init(ngx_cycle_t *cycle)
{
    ngx_zeromq_conf_t  *zcf;

    zcf = (ngx_zeromq_conf_t *) ngx_get_conf(cycle->conf_ctx,
                                             ngx_zeromq_module);

    if (ngx_zeromq_used) {
        ngx_zeromq_ctx = zmq_ctx_new();

        if (ngx_zeromq_ctx == NULL) {
            ngx_zeromq_log_error(cycle->log, "zmq_ctx_new()");
            return NGX_ERROR;
        }

        if (zmq_ctx_set(ngx_zeromq_ctx, ZMQ_IO_THREADS, zcf->threads) == -1) {
            ngx_zeromq_log_error(cycle->log, "zmq_ctx_set(ZMQ_IO_THREADS)");
        }
    }

    return NGX_OK;
}
static void
ngx_process_init(ngx_cycle_t *cycle)
{
    ngx_err_t         err;
    ngx_core_conf_t  *ccf;

    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);

    if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle)
        != NGX_OK)
    {
        /* fatal */
        exit(2);
    }

    err = ngx_thread_key_create(&ngx_core_tls_key);
    if (err != 0) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
                      ngx_thread_key_create_n " failed");
        /* fatal */
        exit(2);
    }
}
static void
ngx_thread_pool_exit_worker(ngx_cycle_t *cycle)
{
    ngx_uint_t                i;
    ngx_thread_pool_t       **tpp;
    ngx_thread_pool_conf_t   *tcf;
    if (ngx_process != NGX_PROCESS_WORKER
            && ngx_process != NGX_PROCESS_SINGLE)
    {
        return;
    }
    tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cycle->conf_ctx,
            ngx_thread_pool_module);
    if (tcf == NULL)
    {
        return;
    }
    tpp = tcf->pools.elts;
    for (i = 0; i < tcf->pools.nelts; i++)
    {
        ngx_thread_pool_destroy(tpp[i]);
    }
}
static ngx_int_t
ngx_http_groonga_init_process(ngx_cycle_t *cycle)
{
  grn_rc rc;
  ngx_http_conf_ctx_t *http_conf;
  ngx_http_groonga_database_callback_data_t data;

  grn_thread_set_get_limit_func(ngx_http_groonga_get_thread_limit, NULL);

#ifdef NGX_HTTP_GROONGA_LOG_PATH
  grn_default_logger_set_path(NGX_HTTP_GROONGA_LOG_PATH);
#endif

  rc = grn_init();
  if (rc != GRN_SUCCESS) {
    return NGX_ERROR;
  }

  grn_set_segv_handler();

  rc = grn_ctx_init(context, GRN_NO_FLAGS);
  if (rc != GRN_SUCCESS) {
    return NGX_ERROR;
  }

  http_conf =
    (ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);

  data.log = cycle->log;
  data.pool = cycle->pool;
  data.rc = NGX_OK;
  ngx_http_groonga_each_loc_conf(http_conf,
                                 ngx_http_groonga_open_database_callback,
                                 &data);

  return data.rc;
}
static ngx_int_t
ngx_squ_tcp_request_module_init(ngx_cycle_t *cycle)
{
    int              n;
    SQRESULT         rc;
    ngx_squ_conf_t  *scf;

    ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
                   "squ tcp request module init");

    scf = (ngx_squ_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_squ_module);

    sq_pushroottable(scf->v);

    sq_pushstring(scf->v, NGX_SQU_TABLE, sizeof(NGX_SQU_TABLE) - 1);
    rc = sq_get(scf->v, -2);
    sq_pushstring(scf->v, NGX_SQU_TCP_TABLE, sizeof(NGX_SQU_TCP_TABLE) - 1);
    rc = sq_get(scf->v, -2);

    n = sizeof(ngx_squ_tcp_request_methods) / sizeof(SQRegFunction) - 1;

    sq_pushstring(scf->v, "request", sizeof("request") - 1);
    sq_newtableex(scf->v, n);

    for (n = 0; ngx_squ_tcp_request_methods[n].name != NULL; n++) {
        sq_pushstring(scf->v, ngx_squ_tcp_request_methods[n].name, -1);
	sq_newclosure(scf->v, ngx_squ_tcp_request_methods[n].f, 0);
	rc = sq_newslot(scf->v, -3, SQFalse);
    }

    rc = sq_newslot(scf->v, -3, SQFalse);

    sq_pop(scf->v, 3);

    return NGX_OK;
}
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);

    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_OK) {
        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_OK) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          ngx_rename_file_n " %s back to %s failed after "
                          "the try to execute the new binary process \"%s\"",
                          ccf->oldpid.data, ccf->pid.data, argv[0]);
        }
    }

    ngx_free(env);
    ngx_free(var);

    return pid;
}
//1.时间、正则、错误日志、ssl等初始化
//2.读入命令行参数
//3.OS相关初始化
//4.读入并解析配置
//5.核心模块初始化
//6.创建各种临时文件和目录
//7.创建共享内存
//8.打开listen的端口
//9.所有模块初始化
//10.启动worker进程
int ngx_cdecl
main(int argc, char *const *argv)
{
    ngx_int_t         i;
    ngx_log_t        *log;
    ngx_cycle_t      *cycle, init_cycle;
    ngx_core_conf_t  *ccf;

#if (NGX_FREEBSD)
    ngx_debug_init();
#endif

    if (ngx_strerror_init() != NGX_OK) {
        return 1;
    }

    //获取参数和配置参数,比如命令是nginx -v 那么ngx_show_version就设置为1
    if (ngx_get_options(argc, argv) != NGX_OK) {
        return 1;
    }

    if (ngx_show_version) {
        ngx_write_stderr("nginx version: " NGINX_VER NGX_LINEFEED);

        if (ngx_show_help) {
            ngx_write_stderr(
                "Usage: nginx [-?hvVtq] [-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
                "  -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) {
            ngx_write_stderr(
#ifdef NGX_COMPILER
                "built by " NGX_COMPILER NGX_LINEFEED
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
                "TLS SNI support enabled" NGX_LINEFEED
#else
                "TLS SNI support disabled" NGX_LINEFEED
#endif
#endif
                "configure arguments:" NGX_CONFIGURE NGX_LINEFEED);
        }

        if (!ngx_test_config) {
            return 0;
        }
    }

    /* TODO */ ngx_max_sockets = -1;

    //初始化nginx环境的当前时间
    ngx_time_init();

#if (NGX_PCRE)
    ngx_regex_init();
#endif

	//master pid, 获取当前进程ID
    ngx_pid = ngx_getpid();
    // 初始化日志,如打开日志文件
    log = ngx_log_init(ngx_prefix);
    if (log == NULL) {
        return 1;
    }

    /* STUB */
#if (NGX_OPENSSL)
    ngx_ssl_init(log);  //是否开启了ssl,如果开启在这里进行初始化
#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;
    // 为cycle创建一个1024B的内存池
    init_cycle.pool = ngx_create_pool(1024, log);
    if (init_cycle.pool == NULL) {
        return 1;
    }
    // 保存参数到全局变量中
    if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) {
        return 1;
    }
    // 初始化init_cycle中的一些如: conf_file,prefix,conf_prefix等字段
    if (ngx_process_options(&init_cycle) != NGX_OK) {
        return 1;
    }
    // 初始化系统相关变量,如内存页面大小ngx_pagesize,ngx_cacheline_size,最大连接数ngx_max_sockets等
    if (ngx_os_init(log) != NGX_OK) {  // 这个ngx_os_init在不同操作系统调用不同的函数
        return 1;
    }

    /*
     * ngx_crc32_table_init() requires ngx_cacheline_size set in ngx_os_init()
     */
    // 初始化CRC表,提高效率,以后就不用计算了,直接用
    if (ngx_crc32_table_init() != NGX_OK) {
        return 1;
    }
     // 继承sockets,继承来的socket将会放到init_cycle的listening数组
    if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
        return 1;
    }
    // 计算模块个数,并且设置各个模块顺序(索引)
    ngx_max_module = 0;
    for (i = 0; ngx_modules[i]; i++) {  // 这里面的ngx_modules会有非常多的模块,[ngx_core_module,ngx_errlog_module,ngx_conf_moduel]
        ngx_modules[i]->index = ngx_max_module++;
    }

    // 对ngx_cycle结构进行初始化,这里是nginx启动核心之处!
    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);
        }

        return 0;
    }
    // 检查是否有设置信号处理,如有,进入ngx_signal_process处理
    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) { //如果是daemon模式,本进程变为守护进程
            return 1;
        }

        ngx_daemonized = 1;
    }

    if (ngx_inherited) {
        ngx_daemonized = 1;
    }

#endif
    // 创建进程记录文件
    if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) {
        return 1;
    }

    if (cycle->log->file->fd != ngx_stderr) {

        if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          ngx_set_stderr_n " failed");
            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);   //单进程

    } else {
        ngx_master_process_cycle(cycle);    //多进程,master进程进入这个,这个函数在不同操作系统有不同实现。
    }

    return 0;
}
Exemple #23
0
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();

    /* 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;

    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;
    }

    /* 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);


    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));
    /* 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; 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)) {

        /*
         * 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].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;
    }


    /* 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 (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
                {
                    nls[n].fd = ls[i].fd;
                    nls[n].previous = &ls[i];
                    ls[i].remain = 1;

                    if (ls[n].backlog != nls[i].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[n].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);
    }


    /* commit the new cycle configuration */

    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) {
                /* 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)) {

        /*
         * perl_destruct() frees environ, if it is not the same as it was at
         * perl_construct() time, therefore we save the previous cycle
         * environment before ngx_conf_parse() where it will be changed.
         */

        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;
        }
    }

    /* 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;
}
Exemple #24
0
int ngx_cdecl
main(int argc, char *const *argv)
{
    ngx_int_t         i;
    ngx_log_t        *log;
    ngx_cycle_t      *cycle, init_cycle;
    ngx_core_conf_t  *ccf;
#if !(NGX_WIN32)
    struct rlimit     rlmt;
#endif

    if (ngx_get_options(argc, argv) != NGX_OK) {
        return 1;
    }

    if (ngx_show_version) {
        ngx_log_stderr(0, "nginx version: " NGINX_VER);

        if (ngx_show_help) {
            ngx_log_stderr(0,
                "Usage: nginx [-?hvVt] [-s signal] [-c filename] "
                             "[-p prefix] [-g directives]" CRLF CRLF
                "Options:" CRLF
                "  -?,-h         : this help" CRLF
                "  -v            : show version and exit" CRLF
                "  -V            : show version and configure options then exit"
                                   CRLF
                "  -t            : test configuration and exit" CRLF
                "  -s signal     : send signal to a master process: "
                                   "stop, quit, reopen, reload" CRLF
#ifdef NGX_PREFIX
                "  -p prefix     : set prefix path (default: "
                                   NGX_PREFIX ")" CRLF
#else
                "  -p prefix     : set prefix path (default: NONE)" CRLF
#endif
                "  -c filename   : set configuration file (default: "
                                   NGX_CONF_PATH ")" CRLF
                "  -g directives : set global directives out of configuration "
                                   "file" CRLF
                );
        }

        if (ngx_show_configure) {
#ifdef NGX_COMPILER
            ngx_log_stderr(0, "built by " NGX_COMPILER);
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
            ngx_log_stderr(0, "TLS SNI support enabled");
#else
            ngx_log_stderr(0, "TLS SNI support disabled");
#endif
#endif
            ngx_log_stderr(0, "configure arguments:" NGX_CONFIGURE);
        }

        if (!ngx_test_config) {
            return 0;
        }
    }

#if (NGX_FREEBSD)
    ngx_debug_init();
#endif

    /* TODO */ ngx_max_sockets = -1;

    ngx_time_init();

#if (NGX_PCRE)
    ngx_regex_init();
#endif

    ngx_pid = ngx_getpid();

    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;
    }

    if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
        return 1;
    }

    ngx_max_module = 0;
    for (i = 0; ngx_modules[i]; i++) {
        ngx_modules[i]->index = ngx_max_module++;
    }

    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) {
        ngx_log_stderr(0, "configuration file %s test is successful",
                       cycle->conf_file.data);
        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 (geteuid() == 0) {
        if (ccf->rlimit_nofile != NGX_CONF_UNSET) {
            rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile;
            rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile;

            if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
                ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                    "setrlimit(RLIMIT_NOFILE, %i) failed", ccf->rlimit_nofile);
            }
        }

        if (ccf->rlimit_core != NGX_CONF_UNSET_SIZE) {
            rlmt.rlim_cur = (rlim_t) ccf->rlimit_core;
            rlmt.rlim_max = (rlim_t) ccf->rlimit_core;

            if (setrlimit(RLIMIT_CORE, &rlmt) == -1) {
                ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                    "setrlimit(RLIMIT_CORE, %i) failed", ccf->rlimit_core);
            }
        }

#ifdef RLIMIT_SIGPENDING
        if (ccf->rlimit_sigpending != NGX_CONF_UNSET) {
            rlmt.rlim_cur = (rlim_t) ccf->rlimit_sigpending;
            rlmt.rlim_max = (rlim_t) ccf->rlimit_sigpending;

            if (setrlimit(RLIMIT_SIGPENDING, &rlmt) == -1) {
                ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                    "setrlimit(RLIMIT_SIGPENDING, %i) failed", ccf->rlimit_sigpending);
            }
        }
#endif

        if (setgid(ccf->group) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                "setgid(%d) failed", ccf->group);
            /* fatal */
            exit(2);
        }

        if (initgroups(ccf->username, ccf->group) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                "initgroups(%s, %d) failed", ccf->username, ccf->group);
        }

        if (setuid(ccf->user) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                "setuid(%d) failed", ccf->user);
            /* fatal */
            exit(2);
        }
    }

    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;
    }

#endif

    if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) {
        return 1;
    }

    if (cycle->log->file->fd != ngx_stderr) {

        if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          ngx_set_stderr_n " failed");
            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;
}
Exemple #25
0
int ngx_cdecl
main(int argc, char *const *argv)
{
    ngx_int_t         i;
    ngx_log_t        *log;
    ngx_cycle_t      *cycle, init_cycle;
    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_write_stderr("nginx version: " NGINX_VER NGX_LINEFEED);

        if (ngx_show_help) {
            ngx_write_stderr(
                "Usage: nginx [-?hvVtq] [-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
                "  -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) {
            ngx_write_stderr(
#ifdef NGX_COMPILER
                "built by " NGX_COMPILER NGX_LINEFEED
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
                "TLS SNI support enabled" NGX_LINEFEED
#else
                "TLS SNI support disabled" NGX_LINEFEED
#endif
#endif
                "configure arguments:" NGX_CONFIGURE NGX_LINEFEED);
        }

        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();

    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;
    }

    if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
        return 1;
    }

    ngx_max_module = 0;
    for (i = 0; ngx_modules[i]; i++) {
        ngx_modules[i]->index = ngx_max_module++;
    }

    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);
        }

        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 (cycle->log->file->fd != ngx_stderr) {

        if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          ngx_set_stderr_n " failed");
            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 int
ngx_lua_http_btt_announce(lua_State *l)
{
    size_t                size;
    u_char               *p, *last, *buf, ip[NGX_INET_ADDRSTRLEN];
    uint32_t              n;
    ngx_int_t             rc;
    ngx_btt_ctx_t        *ctx;
    ngx_btt_conf_t       *bcf;
    ngx_lua_thread_t     *thr;
    ngx_lua_http_ctx_t   *hctx;
    ngx_http_request_t   *r;
    ngx_btt_peer_info_t  *pi;

    thr = ngx_lua_thread(l);

    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, thr->log, 0, "lua http btt announce");

    ctx = ngx_pcalloc(thr->pool, sizeof(ngx_btt_ctx_t));
    if (ctx == NULL) {
        lua_pushboolean(l, 0);
        return 1;
    }

    ctx->pool = thr->pool;
    ctx->log = thr->log;
    hctx = thr->module_ctx;
    r = hctx->r;

    if (ngx_lua_http_btt_parse_args(r, ctx) != NGX_OK) {
        lua_pushboolean(l, 0);
        return 1;
    }

    /* Checking the value of the uri arguments */

    if (ngx_lua_http_btt_check_args(r, ctx) != NGX_OK) {
        lua_pushboolean(l, 0);
        return 1;
    }

    bcf = (ngx_btt_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
                                          ngx_lua_btt_module);

    /* Insert or update peer information in peer list */

    /* TODO: Checking ctx->event */

    rc = ngx_btt_update_peer(bcf, ctx);
    if (rc != NGX_OK) {
        lua_pushboolean(l, 0);
        return 1;
    }

    /* Querying the peer list */

    if (ctx->event != NGX_BTT_EVENT_STOPPED) {
        ctx->peers = ngx_palloc(thr->pool,
                                sizeof(ngx_btt_peer_info_t) * ctx->numwant);
        if (ctx->peers == NULL) {
            lua_pushboolean(l, 0);
            return 1;
        }

        rc = ngx_btt_query_peers(bcf, ctx);
        if (rc != NGX_OK) {
            lua_pushboolean(l, 0);
            return 1;
        }
    }

    /* Calculating the size of the response */

    /* TODO:
     *
     * 8:completei2e
     * 10:downloadedi4e
     * 10:incompletei1e
     *
     * 12:min intervali811e
     */

    size = sizeof("d8:intervalie5:peerse") - 1 + NGX_TIME_T_LEN;

    if (ctx->compact) {
        size += NGX_INT_T_LEN + 1 + 6 * ctx->peers_n;

    } else {
        size += sizeof("le") - 1;

        if (!ctx->no_peer_id) {
            size += (sizeof("7:peer_id20:") - 1 + 20) * ctx->peers_n;
        }

        size += (sizeof("d2:ip4:portiee") - 1
                 + NGX_INT_T_LEN + 1 + NGX_INET_ADDRSTRLEN + NGX_INT_T_LEN)
                * ctx->peers_n;
    }

    buf = ngx_palloc(thr->pool, size);
    if (buf == NULL) {
        lua_pushboolean(l, 0);
        return 1;
    }

    p = buf;
    last = p + size;

    /* Building the response */

    p = ngx_slprintf(p, last, "d8:intervali%Te5:peers", bcf->interval);

    if (ctx->compact) {
        p = ngx_slprintf(p, last, "%uz:", 6 * ctx->peers_n);
    } else {
        *p++ = 'l';
    }

    for (n = 0; n < ctx->peers_n; n++) {
        pi = &ctx->peers[n];

        if (ctx->compact) {
            p = ngx_cpymem(p, &pi->external_ip, sizeof(pi->external_ip));

            pi->internal_port = htons(pi->internal_port);
            p = ngx_cpymem(p, &pi->internal_port, sizeof(pi->internal_port));

        } else {
            *p++ = 'd';

            if (!ctx->no_peer_id) {
                p = ngx_slprintf(p, last, "7:peer_id20:%*s",
                                 sizeof(pi->peer_id), pi->peer_id);
            }

            size = ngx_inet_ntop(AF_INET, &pi->external_ip, ip, sizeof(ip));
            p = ngx_slprintf(p, last, "2:ip%uz:%*s4:porti%uDe",
                             size, size, ip, (uint32_t) pi->internal_port);

            *p++ = 'e';
        }
    }

    if (!ctx->compact) {
        *p++ = 'e';
    }
    *p++ = 'e';

    ngx_lua_output(thr, buf, p - buf);

    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                   "lua http btt announce response:%N%*s", p - buf, buf);

    lua_pushboolean(l, 1);

    return 1;
}
Exemple #27
0
static void
ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data)
{
    ngx_int_t worker = (intptr_t) data;

    ngx_uint_t         i;
    ngx_connection_t  *c;

    ngx_process = NGX_PROCESS_WORKER;

    ngx_worker_process_init(cycle, worker);

    ngx_setproctitle("worker process");

#if (NGX_THREADS)
    {
    ngx_int_t         n;
    ngx_err_t         err;
    ngx_core_conf_t  *ccf;

    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);

    if (ngx_threads_n) {
        if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle)
            == NGX_ERROR)
        {
            /* fatal */
            exit(2);
        }

        err = ngx_thread_key_create(&ngx_core_tls_key);
        if (err != 0) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
                          ngx_thread_key_create_n " failed");
            /* fatal */
            exit(2);
        }

        for (n = 0; n < ngx_threads_n; n++) {

            ngx_threads[n].cv = ngx_cond_init(cycle->log);

            if (ngx_threads[n].cv == NULL) {
                /* fatal */
                exit(2);
            }

            if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid,
                                  ngx_worker_thread_cycle,
                                  (void *) &ngx_threads[n], cycle->log)
                != 0)
            {
                /* fatal */
                exit(2);
            }
        }
    }
    }
#endif

    for ( ;; ) {

        if (ngx_exiting) {

            c = cycle->connections;

            for (i = 0; i < cycle->connection_n; i++) {

                /* THREAD: lock */

                if (c[i].fd != -1 && c[i].idle) {
                    c[i].close = 1;
                    c[i].read->handler(c[i].read);
                }
            }

            if (ngx_event_timer_rbtree.root == ngx_event_timer_rbtree.sentinel)
            {
                ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting");

                ngx_worker_process_exit(cycle);
            }
        }

        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");

        ngx_process_events_and_timers(cycle);

        if (ngx_terminate) {
            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting");

            ngx_worker_process_exit(cycle);
        }

        if (ngx_quit) {
            ngx_quit = 0;
            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
                          "gracefully shutting down");
            ngx_setproctitle("worker process is shutting down");

            if (!ngx_exiting) {
                ngx_close_listening_sockets(cycle);
                ngx_exiting = 1;
            }
        }

        if (ngx_reopen) {
            ngx_reopen = 0;
            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
            ngx_reopen_files(cycle, -1);
        }
    }
}
Exemple #28
0
static ngx_int_t
ngx_regex_module_init(ngx_cycle_t *cycle)
{
    int               opt;
    const char       *errstr;
    ngx_uint_t        i;
    ngx_list_part_t  *part;
    ngx_regex_elt_t  *elts;

    opt = 0;

#if (NGX_HAVE_PCRE_JIT)
    {
    ngx_regex_conf_t    *rcf;
    ngx_pool_cleanup_t  *cln;

    rcf = (ngx_regex_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_regex_module);

    if (rcf->pcre_jit) {
        opt = PCRE_STUDY_JIT_COMPILE;

        /*
         * The PCRE JIT compiler uses mmap for its executable codes, so we
         * have to explicitly call the pcre_free_study() function to free
         * this memory.
         */

        cln = ngx_pool_cleanup_add(cycle->pool, 0);
        if (cln == NULL) {
            return NGX_ERROR;
        }

        cln->handler = ngx_pcre_free_studies;
        cln->data = ngx_pcre_studies;
    }
    }
#endif

    ngx_regex_malloc_init(cycle->pool);

    part = &ngx_pcre_studies->part;
    elts = part->elts;

    for (i = 0 ; /* void */ ; i++) {

        if (i >= part->nelts) {
            if (part->next == NULL) {
                break;
            }

            part = part->next;
            elts = part->elts;
            i = 0;
        }

        elts[i].regex->extra = pcre_study(elts[i].regex->code, opt, &errstr);

        if (errstr != NULL) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
                          "pcre_study() failed: %s in \"%s\"",
                          errstr, elts[i].name);
        }

#if (NGX_HAVE_PCRE_JIT)
        if (opt & PCRE_STUDY_JIT_COMPILE) {
            int jit, n;

            jit = 0;
            n = pcre_fullinfo(elts[i].regex->code, elts[i].regex->extra,
                              PCRE_INFO_JIT, &jit);

            if (n != 0 || jit != 1) {
                ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
                              "JIT compiler does not support pattern: \"%s\"",
                              elts[i].name);
            }
        }
#endif
    }

    ngx_regex_malloc_done();

    ngx_pcre_studies = NULL;

    return NGX_OK;
}
Exemple #29
0
static void
ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker)
{
    sigset_t          set;
    uint64_t          cpu_affinity;
    ngx_int_t         n;
    ngx_uint_t        i;
    struct rlimit     rlmt;
    ngx_core_conf_t  *ccf;
    ngx_listening_t  *ls;

    if (ngx_set_environment(cycle, NULL) == NULL) {
        /* fatal */
        exit(2);
    }

    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);

    if (worker >= 0 && ccf->priority != 0) {
        if (setpriority(PRIO_PROCESS, 0, ccf->priority) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "setpriority(%d) failed", ccf->priority);
        }
    }

    if (ccf->rlimit_nofile != NGX_CONF_UNSET) {
        rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile;
        rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile;

        if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "setrlimit(RLIMIT_NOFILE, %i) failed",
                          ccf->rlimit_nofile);
        }
    }

    if (ccf->rlimit_core != NGX_CONF_UNSET) {
        rlmt.rlim_cur = (rlim_t) ccf->rlimit_core;
        rlmt.rlim_max = (rlim_t) ccf->rlimit_core;

        if (setrlimit(RLIMIT_CORE, &rlmt) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "setrlimit(RLIMIT_CORE, %O) failed",
                          ccf->rlimit_core);
        }
    }

#ifdef RLIMIT_SIGPENDING
    if (ccf->rlimit_sigpending != NGX_CONF_UNSET) {
        rlmt.rlim_cur = (rlim_t) ccf->rlimit_sigpending;
        rlmt.rlim_max = (rlim_t) ccf->rlimit_sigpending;

        if (setrlimit(RLIMIT_SIGPENDING, &rlmt) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "setrlimit(RLIMIT_SIGPENDING, %i) failed",
                          ccf->rlimit_sigpending);
        }
    }
#endif

    if (geteuid() == 0) {
        if (setgid(ccf->group) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          "setgid(%d) failed", ccf->group);
            /* fatal */
            exit(2);
        }

        if (initgroups(ccf->username, ccf->group) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          "initgroups(%s, %d) failed",
                          ccf->username, ccf->group);
        }

        if (setuid(ccf->user) == -1) {
            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
                          "setuid(%d) failed", ccf->user);
            /* fatal */
            exit(2);
        }
    }

    if (worker >= 0) {
        cpu_affinity = ngx_get_cpu_affinity(worker);

        if (cpu_affinity) {
            ngx_setaffinity(cpu_affinity, cycle->log);
        }
    }

#if (NGX_HAVE_PR_SET_DUMPABLE)

    /* allow coredump after setuid() in Linux 2.4.x */

    if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                      "prctl(PR_SET_DUMPABLE) failed");
    }

#endif

    if (ccf->working_directory.len) {
        if (chdir((char *) ccf->working_directory.data) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "chdir(\"%s\") failed", ccf->working_directory.data);
            /* fatal */
            exit(2);
        }
    }

    sigemptyset(&set);

    if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                      "sigprocmask() failed");
    }

    srandom((ngx_pid << 16) ^ ngx_time());

    /*
     * disable deleting previous events for the listening sockets because
     * in the worker processes there are no events at all at this point
     */
    ls = cycle->listening.elts;
    for (i = 0; i < cycle->listening.nelts; i++) {
        ls[i].previous = NULL;
    }

    for (i = 0; ngx_modules[i]; i++) {
        if (ngx_modules[i]->init_process) {
            if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
                /* fatal */
                exit(2);
            }
        }
    }

    for (n = 0; n < ngx_last_process; n++) {

        if (ngx_processes[n].pid == -1) {
            continue;
        }

        if (n == ngx_process_slot) {
            continue;
        }

        if (ngx_processes[n].channel[1] == -1) {
            continue;
        }

        if (close(ngx_processes[n].channel[1]) == -1) {
            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                          "close() channel failed");
        }
    }

    if (close(ngx_processes[ngx_process_slot].channel[0]) == -1) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                      "close() channel failed");
    }

#if 0
    ngx_last_process = 0;
#endif

    if (ngx_add_channel_event(cycle, ngx_channel, NGX_READ_EVENT,
                              ngx_channel_handler)
        == NGX_ERROR)
    {
        /* fatal */
        exit(2);
    }
}
Exemple #30
0
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
    char              *title;
    u_char            *p;
    size_t             size;
    ngx_int_t          i;
    ngx_uint_t         n, sigio;
    sigset_t           set;
    struct itimerval   itv;
    ngx_uint_t         live;
    ngx_msec_t         delay;
    ngx_listening_t   *ls;
    ngx_core_conf_t   *ccf;

    sigemptyset(&set);
    sigaddset(&set, SIGCHLD);
    sigaddset(&set, SIGALRM);
    sigaddset(&set, SIGIO);
    sigaddset(&set, SIGINT);
    sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
    sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
    sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
    sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
    sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
    sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));

    if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                      "sigprocmask() failed");
    }

    sigemptyset(&set);


    size = sizeof(master_process);

    for (i = 0; i < ngx_argc; i++) {
        size += ngx_strlen(ngx_argv[i]) + 1;
    }

    title = ngx_pnalloc(cycle->pool, size);

    p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
    for (i = 0; i < ngx_argc; i++) {
        *p++ = ' ';
        p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
    }

    ngx_setproctitle(title);


    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);

    ngx_start_worker_processes(cycle, ccf->worker_processes,
                               NGX_PROCESS_RESPAWN);
    ngx_start_cache_manager_processes(cycle, 0);

    ngx_new_binary = 0;
    delay = 0;
    sigio = 0;
    live = 1;

    for ( ;; ) {
        if (delay) {
            if (ngx_sigalrm) {
                sigio = 0;
                delay *= 2;
                ngx_sigalrm = 0;
            }

            ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                           "termination cycle: %d", delay);

            itv.it_interval.tv_sec = 0;
            itv.it_interval.tv_usec = 0;
            itv.it_value.tv_sec = delay / 1000;
            itv.it_value.tv_usec = (delay % 1000 ) * 1000;

            if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                              "setitimer() failed");
            }
        }

        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");

        sigsuspend(&set);

        ngx_time_update();

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                       "wake up, sigio %i", sigio);

        if (ngx_reap) {
            ngx_reap = 0;
            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children");

            live = ngx_reap_children(cycle);
        }

        if (!live && (ngx_terminate || ngx_quit)) {
            ngx_master_process_exit(cycle);
        }

        if (ngx_terminate) {
            if (delay == 0) {
                delay = 50;
            }

            if (sigio) {
                sigio--;
                continue;
            }

            sigio = ccf->worker_processes + 2 /* cache processes */;

            if (delay > 1000) {
                ngx_signal_worker_processes(cycle, SIGKILL);
            } else {
                ngx_signal_worker_processes(cycle,
                                       ngx_signal_value(NGX_TERMINATE_SIGNAL));
            }

            continue;
        }

        if (ngx_quit) {
            ngx_signal_worker_processes(cycle,
                                        ngx_signal_value(NGX_SHUTDOWN_SIGNAL));

            ls = cycle->listening.elts;
            for (n = 0; n < cycle->listening.nelts; n++) {
                if (ngx_close_socket(ls[n].fd) == -1) {
                    ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
                                  ngx_close_socket_n " %V failed",
                                  &ls[n].addr_text);
                }
            }
            cycle->listening.nelts = 0;

            continue;
        }

        if (ngx_reconfigure) {
            ngx_reconfigure = 0;

            if (ngx_new_binary) {
                ngx_start_worker_processes(cycle, ccf->worker_processes,
                                           NGX_PROCESS_RESPAWN);
                ngx_start_cache_manager_processes(cycle, 0);
                ngx_noaccepting = 0;

                continue;
            }

            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring");

            cycle = ngx_init_cycle(cycle);
            if (cycle == NULL) {
                cycle = (ngx_cycle_t *) ngx_cycle;
                continue;
            }

            ngx_cycle = cycle;
            ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
                                                   ngx_core_module);
            ngx_start_worker_processes(cycle, ccf->worker_processes,
                                       NGX_PROCESS_JUST_RESPAWN);
            ngx_start_cache_manager_processes(cycle, 1);

            /* allow new processes to start */
            ngx_msleep(100);

            live = 1;
            ngx_signal_worker_processes(cycle,
                                        ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
        }

        if (ngx_restart) {
            ngx_restart = 0;
            ngx_start_worker_processes(cycle, ccf->worker_processes,
                                       NGX_PROCESS_RESPAWN);
            ngx_start_cache_manager_processes(cycle, 0);
            live = 1;
        }

        if (ngx_reopen) {
            ngx_reopen = 0;
            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
            ngx_reopen_files(cycle, ccf->user);
            ngx_signal_worker_processes(cycle,
                                        ngx_signal_value(NGX_REOPEN_SIGNAL));
        }

        if (ngx_change_binary) {
            ngx_change_binary = 0;
            ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "changing binary");
            ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
        }

        if (ngx_noaccept) {
            ngx_noaccept = 0;
            ngx_noaccepting = 1;
            ngx_signal_worker_processes(cycle,
                                        ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
        }
    }
}