int main(int argc, char *argv[]) {
chdir(BBSHOME); //进入BBS用户主目录
setuid(BBSUID); //将进程的 用户ID
setgid(BBSGID); //组ID设置成BBS
setreuid(BBSUID, BBSUID); //设置有效用户ID
setregid(BBSGID, BBSGID); //有效组ID为BBS
if (argc <= 1) {
printf("usage: daemon | flushed | reload\n");
exit(0);
}
if ( !strcasecmp(argv[1], "daemon") ) { // miscd daemon
switch (fork()) { //后台程序:需要创建一个子进程,由子进程杀死父进程
case -1: //
printf("cannot fork\n");
exit(0);
break;
case 0: // 子进程
break;
default:
exit(0); //父进程
break;
}
if (load_ucache() != 0) { //将用户的数据映射到内存
printf("load ucache error\n");
exit(-1);
}
if (resolve_boards() < 0)
exit(-1);
atexit(do_exit); //注册退出前运行的函数.正常退出前须执行此函数
while (1) { //循环
refresh_utmp(); //刷新用户临时数据
b_closepolls(); //关闭投票
flush_ucache(); //将用户在内存中的数据写回.PASSWDS
flush_bcache();
sleep(60 * 15); //睡眠十分钟,即每十五分钟同步一次.
}
} else if ( !strcasecmp(argv[1], "flushed") ) { //miscd flushed
if (resolve_ucache() == -1)
exit(1);
flush_ucache();
flush_bcache();
} else if ( !strcasecmp(argv[1], "reload") ) { //miscd reload
if (load_ucache() != 0) {
printf("load ucache error\n");
exit(-1);
}
} else {
printf("usage: daemon | flushed | reload\n");
exit(0);
}
return 0;
}
static void start_client() {
extern struct commands_t cmdlist[];
int nreg;
/* system init */
currmode = 0;
signal(SIGHUP, abort_bbs);
signal(SIGTERM, abort_bbs);
signal(SIGPIPE, abort_bbs);
signal(SIGINT, abort_bbs_debug);
signal(SIGQUIT, abort_bbs_debug);
signal(SIGILL, abort_bbs_debug);
signal(SIGABRT, abort_bbs_debug);
signal(SIGFPE, abort_bbs_debug);
signal(SIGBUS, abort_bbs_debug);
signal(SIGSEGV, abort_bbs_debug);
signal_restart(SIGUSR1, talk_request);
signal_restart(SIGUSR2, write_request);
dup2(0, 1);
do_term_init();
signal(SIGALRM, abort_bbs);
alarm(600);
login_query(); /* Ptt 加上login time out */
user_login();
m_init();
#if FORCE_PROCESS_REGISTER_FORM
if (HAS_PERM(PERM_SYSOP) && (nreg = dashs(fn_register)/163) > 100)
{
char cpu_load[30];
if(cpuload(cpu_load) > MAX_CPULOAD*2/3) /* DickG: 根據目前的 load 來 */
scan_register_form(fn_register, 1, nreg/20); /* 決定要審核的數目 */
else
scan_register_form(fn_register, 1, nreg/10);
}
#endif
if(HAVE_PERM(PERM_SYSOP | PERM_BM))
b_closepolls();
if(!(cuser.uflag & COLOR_FLAG))
showansi = 0;
#ifdef DOTIMEOUT
/* init_alarm();*/ // cause strange logout with saving post.
signal(SIGALRM, SIG_IGN);
#else
signal(SIGALRM, SIG_IGN);
#endif
if(chkmailbox())
m_read();
domenu(MMENU, "主功\能表", (chkmail(0) ? 'M' : 'C'), cmdlist);
}