mirror of
https://github.com/eddyem/eddys_snippets.git
synced 2025-12-06 18:55:16 +03:00
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*
|
|
* This file is part of the SEWmanage project.
|
|
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/prctl.h>
|
|
#include <sys/wait.h>
|
|
#include <usefull_macros.h>
|
|
|
|
#include "cmdlnopts.h"
|
|
#include "sersock.h"
|
|
|
|
static pid_t childpid = 0;
|
|
|
|
void signals(int sig){
|
|
if(childpid){ // slave process
|
|
DBG("Child killed with sig=%d", sig);
|
|
LOGWARN("Child killed with sig=%d", sig);
|
|
exit(sig);
|
|
}
|
|
if(sig){
|
|
DBG("Exit with signal %d", sig);
|
|
signal(sig, SIG_IGN);
|
|
LOGERR("Exit with signal %d", sig);
|
|
}else LOGERR("Exit");
|
|
exit(sig);
|
|
}
|
|
|
|
int main(int argc, char **argv){
|
|
initial_setup();
|
|
parse_args(argc, argv);
|
|
if(GP->logfile){
|
|
int lvl = LOGLEVEL_WARN + GP->verbose;
|
|
DBG("level = %d", lvl);
|
|
if(lvl > LOGLEVEL_ANY) lvl = LOGLEVEL_ANY;
|
|
verbose(1, "Log file %s @ level %d\n", GP->logfile, lvl);
|
|
OPENLOG(GP->logfile, lvl, 1);
|
|
if(!globlog) WARNX("Can't create log file");
|
|
}
|
|
// signal reactions:
|
|
signal(SIGTERM, signals); // kill (-15) - quit
|
|
signal(SIGHUP, SIG_IGN); // hup - ignore
|
|
signal(SIGINT, signals); // ctrl+C - quit
|
|
signal(SIGQUIT, signals); // ctrl+\ - quit
|
|
signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
|
|
DBG("start");
|
|
LOGMSG("Started");
|
|
/*
|
|
#ifndef EBUG
|
|
unsigned int pause = 5;
|
|
while(1){
|
|
childpid = fork();
|
|
if(childpid){ // master
|
|
double t0 = dtime();
|
|
LOGMSG("Created child with pid %d", childpid);
|
|
wait(NULL);
|
|
LOGWARN("Child %d died", childpid);
|
|
if(dtime() - t0 < 1.) pause += 5;
|
|
else pause = 1;
|
|
if(pause > 900) pause = 900;
|
|
sleep(pause); // wait a little before respawn
|
|
}else{ // slave
|
|
prctl(PR_SET_PDEATHSIG, SIGTERM); // send SIGTERM to child when parent dies
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
*/
|
|
CANcmd mesg = CMD_GETSPEED;
|
|
if(GP->setspeed != INT_MAX){
|
|
if(GP->stop) ERRX("Commands 'stop' and 'set speed' can't be together");
|
|
if(GP->setspeed < -0xffff/5 || GP->setspeed > 0xffff/5) ERRX("Parameter 'set speed' should be |int16_t| < %d", 0xffff/5);
|
|
mesg = CMD_SETSPEED;
|
|
}else if(GP->stop) mesg = CMD_STOP;
|
|
signals(start_socket(GP->path, mesg, GP->setspeed));
|
|
return 0;
|
|
}
|