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nginx/src/core/nginx.c
Kurtis Nusbaum 470d038671 Extract out version info function. 
The code for displaying version info and configuration info seemed to be
cluttering up the main function. I was finding it hard to read main. This
extracts out all of the logic for displaying version and configuration info
into its own function, thus making main easier to read.
2015-07-12 08:31:38 -07:00

1370 lines
32 KiB
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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();
static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle);
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 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("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_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
};
ngx_uint_t ngx_max_module;
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();
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);
}
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()
{
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 (SSLeay() == SSLEAY_VERSION_NUMBER) {
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)
SSLeay_version(SSLEAY_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;
}
}
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;
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);
*last = n;
} else {
env = ngx_palloc(cycle->pool, (n + 1) * sizeof(char *));
}
if (env == NULL) {
return NULL;
}
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;
}
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 - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_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_n = 0;
* ccf->cpu_affinity = NULL;
*/
ccf->daemon = NGX_CONF_UNSET;
ccf->master = NGX_CONF_UNSET;
ccf->timer_resolution = 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_value(ccf->worker_processes, 1);
ngx_conf_init_value(ccf->debug_points, 0);
#if (NGX_HAVE_CPU_AFFINITY)
if (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 = (ngx_str_t *) 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;
uint64_t *mask;
ngx_str_t *value;
ngx_uint_t i, n;
if (ccf->cpu_affinity) {
return "is duplicate";
}
mask = ngx_palloc(cf->pool, (cf->args->nelts - 1) * sizeof(uint64_t));
if (mask == NULL) {
return NGX_CONF_ERROR;
}
ccf->cpu_affinity_n = cf->args->nelts - 1;
ccf->cpu_affinity = mask;
value = cf->args->elts;
for (n = 1; n < cf->args->nelts; n++) {
if (value[n].len > 64) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"worker_cpu_affinity\" supports up to 64 CPUs only");
return NGX_CONF_ERROR;
}
mask[n - 1] = 0;
for (i = 0; i < value[n].len; i++) {
ch = value[n].data[i];
if (ch == ' ') {
continue;
}
mask[n - 1] <<= 1;
if (ch == '0') {
continue;
}
if (ch == '1') {
mask[n - 1] |= 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;
}
uint64_t
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 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 = (ngx_str_t *) 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;
}
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