/*********************************************************************************
 *      Copyright:  (C) 2025 LingYun IoT System Studio
 *                  All rights reserved.
 *
 *       Filename:  syslog.c
 *    Description:  This file is syslog() example code.
 *                 
 *        Version:  1.0.0(10/28/2025)
 *         Author:  Guo Wenxue <guowenxue@gmail.com>
 *      ChangeLog:  1, Release initial version on "10/28/2025 02:15:06 PM"
 *                 
 ********************************************************************************/

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <syslog.h>
#include <libgen.h> /* basename() */

int main(int argc, char **argv)
{
    char      *progname = basename(argv[0]);

    if( daemon(0, 0) < 0)
    {
        printf("Program daemon() failure: %s\n", strerror(errno));
        return -1;
    }
    openlog("daemon", LOG_CONS | LOG_PID, 0);
    syslog(LOG_NOTICE,  "Program '%s'start running\n",  progname);
    syslog(LOG_WARNING,  "Program '%s' running with a warnning message\n",  progname );
    syslog(LOG_EMERG,  "Program '%s' running with a emergency message\n",  progname );
    while(1)
    {
        //Do Something here
        ;
    }

    syslog(LOG_NOTICE,  "Program '%s' stop running\n",  progname);
    closelog();

    return 0;
}