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nginx/src/core/nginx.c
Igor Sysoev fc5a10aedc nginx-0.0.2-2004-03-09-22:47:07 import
2004-03-09 19:47:07 +00:00

463 lines
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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <nginx.h>
#if 0
typedef struct {
ngx_flag_t daemon;
ngx_flag_t master;
ngx_flag_t worker_reopen;
uid_t user;
gid_t group;
ngx_str_t pid;
ngx_str_t newpid;
} ngx_core_conf_t;
typedef struct {
ngx_file_t pid;
char *name;
int argc;
char *const *argv;
} ngx_master_ctx_t;
static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
static void ngx_master_exit(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data);
#if (NGX_THREADS)
static int ngx_worker_thread_cycle(void *data);
#endif
#endif
static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle);
static ngx_int_t ngx_getopt(ngx_master_ctx_t *ctx, ngx_cycle_t *cycle);
static ngx_int_t ngx_core_module_init(ngx_cycle_t *cycle);
static char *ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_str_t core_name = ngx_string("core");
static ngx_command_t ngx_core_commands[] = {
{ ngx_string("user"),
NGX_MAIN_CONF|NGX_CONF_TAKE12,
ngx_set_user,
0,
0,
NULL },
{ ngx_string("daemon"),
NGX_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_core_flag_slot,
0,
offsetof(ngx_core_conf_t, daemon),
NULL },
{ ngx_string("master_process"),
NGX_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_core_flag_slot,
0,
offsetof(ngx_core_conf_t, master),
NULL },
{ ngx_string("pid"),
NGX_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_core_str_slot,
0,
offsetof(ngx_core_conf_t, pid),
NULL },
{ ngx_string("worker_reopen"),
NGX_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_core_flag_slot,
0,
offsetof(ngx_core_conf_t, worker_reopen),
NULL },
ngx_null_command
};
ngx_module_t ngx_core_module = {
NGX_MODULE,
&core_name, /* module context */
ngx_core_commands, /* module directives */
NGX_CORE_MODULE, /* module type */
ngx_core_module_init, /* init module */
NULL /* init child */
};
ngx_int_t ngx_max_module;
ngx_atomic_t ngx_connection_counter;
ngx_int_t ngx_process;
ngx_pid_t ngx_pid;
ngx_pid_t ngx_new_binary;
ngx_int_t ngx_inherited;
ngx_int_t ngx_reap;
ngx_int_t ngx_timer;
ngx_int_t ngx_terminate;
ngx_int_t ngx_quit;
ngx_int_t ngx_noaccept;
ngx_int_t ngx_reconfigure;
ngx_int_t ngx_reopen;
ngx_int_t ngx_change_binary;
int 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_master_ctx_t ctx;
#if !(WIN32)
size_t len;
char pid[/* STUB */ 10];
#endif
#if __FreeBSD__
ngx_debug_init();
#endif
/* TODO */ ngx_max_sockets = -1;
ngx_time_init();
#if (HAVE_PCRE)
ngx_regex_init();
#endif
log = ngx_log_init_errlog();
ngx_pid = ngx_getpid();
/* init_cycle->log is required for signal handlers and ngx_getopt() */
ngx_memzero(&init_cycle, sizeof(ngx_cycle_t));
init_cycle.log = log;
ngx_cycle = &init_cycle;
#if 0
/* STUB */ log->log_level = NGX_LOG_DEBUG_ALL;
#endif
ngx_memzero(&ctx, sizeof(ngx_master_ctx_t));
ctx.argc = argc;
ctx.argv = argv;
#if (NGX_THREADS)
if (ngx_time_mutex_init(log) == NGX_ERROR) {
return 1;
}
#endif
if (ngx_getopt(&ctx, &init_cycle) == NGX_ERROR) {
return 1;
}
if (ngx_os_init(log) == NGX_ERROR) {
return 1;
}
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) {
ngx_modules[i]->index = ngx_max_module++;
}
if (!(init_cycle.pool = ngx_create_pool(1024, log))) {
return 1;
}
if (ngx_add_inherited_sockets(&init_cycle) == NGX_ERROR) {
return 1;
}
cycle = ngx_init_cycle(&init_cycle);
if (cycle == NULL) {
return 1;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
ngx_process = (ccf->master != 0) ? NGX_PROCESS_MASTER : NGX_PROCESS_SINGLE;
#if (WIN32)
#if 0
if (run_as_service) {
if (ngx_servie(cycle->log) == NGX_ERROR) {
return 1;
}
return 0;
}
#endif
#else
if (!ngx_inherited && ccf->daemon != 0) {
if (ngx_daemon(cycle->log) == NGX_ERROR) {
return 1;
}
}
if (ccf->pid.len == 0) {
ccf->pid.len = sizeof(NGINX_PID) - 1;
ccf->pid.data = NGINX_PID;
ccf->newpid.len = sizeof(NGINX_NEW_PID) - 1;
ccf->newpid.data = NGINX_NEW_PID;
} else {
ccf->newpid.len = ccf->pid.len + sizeof(NGINX_NEW_PID_EXT);
if (!(ccf->newpid.data = ngx_alloc(ccf->newpid.len, cycle->log))) {
return 1;
}
ngx_memcpy(ngx_cpymem(ccf->newpid.data, ccf->pid.data, ccf->pid.len),
NGINX_NEW_PID_EXT, sizeof(NGINX_NEW_PID_EXT));
}
len = ngx_snprintf(pid, /* STUB */ 10, PID_T_FMT, ngx_getpid());
ngx_memzero(&ctx.pid, sizeof(ngx_file_t));
ctx.pid.name = ngx_inherited ? ccf->newpid : ccf->pid;
ctx.name = ccf->pid.data;
ctx.pid.fd = ngx_open_file(ctx.pid.name.data, NGX_FILE_RDWR,
NGX_FILE_CREATE_OR_OPEN);
if (ctx.pid.fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", ctx.pid.name.data);
return 1;
}
if (ngx_write_file(&ctx.pid, pid, len, 0) == NGX_ERROR) {
return 1;
}
if (ngx_close_file(ctx.pid.fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", ctx.pid.name.data);
}
#endif
ngx_master_process_cycle(cycle, &ctx);
return 0;
}
static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle)
{
char *p, *v, *inherited;
ngx_socket_t s;
ngx_listening_t *ls;
inherited = getenv(NGINX_VAR);
if (inherited == NULL) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"using inherited sockets from \"%s\"", inherited);
ngx_init_array(cycle->listening, cycle->pool,
10, sizeof(ngx_listening_t), 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 " enviroment variable, "
"ignoring the rest of the variable", v);
break;
}
v = p + 1;
if (!(ls = ngx_push_array(&cycle->listening))) {
return NGX_ERROR;
}
ls->fd = s;
}
}
ngx_inherited = 1;
return ngx_set_inherited_sockets(cycle);
}
ngx_pid_t ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv)
{
char *env[2], *var, *p;
ngx_int_t i;
ngx_pid_t pid;
ngx_exec_ctx_t ctx;
ngx_listening_t *ls;
ctx.path = argv[0];
ctx.name = "new binary process";
ctx.argv = argv;
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_snprintf(p, NGX_INT32_LEN + 2, "%u;", ls[i].fd);
}
ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, "inherited: %s", var);
env[0] = var;
env[1] = NULL;
ctx.envp = (char *const *) &env;
pid = ngx_execute(cycle, &ctx);
ngx_free(var);
return pid;
}
static ngx_int_t ngx_getopt(ngx_master_ctx_t *ctx, ngx_cycle_t *cycle)
{
ngx_int_t i;
for (i = 1; i < ctx->argc; i++) {
if (ctx->argv[i][0] != '-') {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"invalid option: \"%s\"", ctx->argv[i]);
return NGX_ERROR;
}
switch (ctx->argv[i][1]) {
case 'c':
cycle->conf_file.data = ctx->argv[++i];
cycle->conf_file.len = ngx_strlen(cycle->conf_file.data);
break;
default:
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"invalid option: \"%s\"", ctx->argv[i]);
return NGX_ERROR;
}
}
if (cycle->conf_file.data == NULL) {
cycle->conf_file.len = sizeof(NGINX_CONF) - 1;
cycle->conf_file.data = NGINX_CONF;
}
return NGX_OK;
}
static ngx_int_t ngx_core_module_init(ngx_cycle_t *cycle)
{
ngx_core_conf_t *ccf;
/*
* ngx_core_module has a special init procedure: it is called by
* ngx_init_cycle() before the configuration file parsing to create
* ngx_core_module configuration and to set its default parameters
*/
if (((void **)(cycle->conf_ctx))[ngx_core_module.index] != NULL) {
return NGX_OK;
}
if (!(ccf = ngx_pcalloc(cycle->pool, sizeof(ngx_core_conf_t)))) {
return NGX_ERROR;
}
/* set by pcalloc()
*
* ccf->pid = NULL;
* ccf->newpid = NULL;
*/
ccf->daemon = NGX_CONF_UNSET;
ccf->master = NGX_CONF_UNSET;
ccf->worker_reopen = NGX_CONF_UNSET;
ccf->user = (ngx_uid_t) NGX_CONF_UNSET;
ccf->group = (ngx_gid_t) NGX_CONF_UNSET;
((void **)(cycle->conf_ctx))[ngx_core_module.index] = ccf;
return NGX_OK;
}
static char *ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
#if (WIN32)
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"\"user\" is not supported, ignored");
return NGX_CONF_OK;
#else
struct passwd *pwd;
struct group *grp;
ngx_str_t *value;
ngx_core_conf_t *ccf;
ccf = *(void **)conf;
if (ccf->user != (uid_t) NGX_CONF_UNSET) {
return "is duplicate";
}
value = (ngx_str_t *) cf->args->elts;
pwd = getpwnam(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;
if (cf->args->nelts == 2) {
return NGX_CONF_OK;
}
grp = getgrnam(value[2].data);
if (grp == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
"getgrnam(%s) failed", value[1].data);
return NGX_CONF_ERROR;
}
ccf->group = grp->gr_gid;
return NGX_CONF_OK;
#endif
}
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