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https://github.com/eddyem/eddys_snippets.git
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82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* geany_encoding=koi8-r
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* main.c
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*
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* Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "usefull_macros.h"
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#include <signal.h>
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#include <sys/wait.h> // wait
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#include <sys/prctl.h> //prctl
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#include "cmdlnopts.h"
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#include "socket.h"
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glob_pars *GP;
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void signals(int signo){
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restore_console();
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restore_tty();
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putlog("exit with status %d", signo);
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exit(signo);
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}
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int main(int argc, char **argv){
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initial_setup();
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signal(SIGTERM, signals); // kill (-15) - quit
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signal(SIGHUP, SIG_IGN); // hup - ignore
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signal(SIGINT, signals); // ctrl+C - quit
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signal(SIGQUIT, signals); // ctrl+\ - quit
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signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
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GP = parse_args(argc, argv);
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if(GP->terminal){
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if(!GP->device) ERRX(_("Point serial device name"));
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try_connect(GP->device);
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run_terminal();
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signals(0); // never reached!
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}
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if(GP->logfile)
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openlogfile(GP->logfile);
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#ifndef EBUG
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if(daemon(1, 0)){
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ERR("daemon()");
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}
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while(1){ // guard for dead processes
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pid_t childpid = fork();
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if(childpid){
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putlog("create child with PID %d\n", childpid);
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DBG("Created child with PID %d\n", childpid);
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wait(NULL);
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putlog("child %d died\n", childpid);
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WARNX("Child %d died\n", childpid);
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sleep(1);
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}else{
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prctl(PR_SET_PDEATHSIG, SIGTERM); // send SIGTERM to child when parent dies
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break; // go out to normal functional
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}
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}
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#endif
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if(GP->device) try_connect(GP->device);
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/*
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* INSERT CODE HERE
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* connection check & device validation
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*/
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//if(!G->terminal) signals(15); // there's not main controller connected to given terminal
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daemonize(GP->port);
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return 0;
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}
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