Logging to a file in daemon process - c

Question

I am following a quick guide how to create daemon process in C, that was created as an answer to one of Stack Overflow questions.
And here is a problem, to make this code easier for me I have created a file, where I am logging some debug data, but when I make a second fork(), my new child seems not to log anything. I check the list of processes that exists. I have no idea why it did not print anything to my file. Any ideas? 0.o
My adjusted code:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <syslog.h>
#define LOG_FILE "/local_pv/asiwek/daemon_test/daemon_log.log"
static void skeleton_daemon(FILE* file)
{
pid_t pid;
/* Fork off the parent process */
pid = fork();
/* An error occurred */
if (pid < 0)
exit(EXIT_FAILURE);
/* Success: Let the parent terminate */
if (pid > 0)
exit(EXIT_SUCCESS);
fprintf(file ,"I'm a child! \n");
/* On success: The child process becomes session leader */
if (setsid() < 0)
{
fprintf(file ,"ERROR: setsid()! \n");
exit(EXIT_FAILURE);
}
/* Catch, ignore and handle signals */
//TODO: Implement a working signal handler */
signal(SIGCHLD, SIG_IGN);
signal(SIGHUP, SIG_IGN);
/* Fork off for the second time*/
pid = fork();
/* An error occurred */
if (pid < 0)
{
fprintf(file ,"ERROR: fork()! \n");
exit(EXIT_FAILURE);
}
/* Success: Let the parent terminate */
if (pid > 0)
{
fprintf(file, "I'm a parent of the child! pid : %d", pid);
exit(EXIT_SUCCESS);
}
fprintf(file ,"New Child!! \n"); // here program stops logging
/* Set new file permissions */
umask(0);
/* Change the working directory to the root directory */
/* or another appropriated directory */
chdir("/local_pv/asiwek/daemon_test/");
fprintf(file ,"chdir \n");
/* Close all open file descriptors */
int x;
for (x = sysconf(_SC_OPEN_MAX); x>=0; x--)
{
close (x);
}
/* Open the log file */
//openlog ("firstdaemon", LOG_PID, LOG_DAEMON);
fprintf(file ,"skeleton_daemon() end. \n");
}
int main()
{
FILE* f = fopen(LOG_FILE, "w");
skeleton_daemon(f);
fprintf(f ,"Oh boy I am a daemon!!! \n");
while (1)
{
//TODO: Insert daemon code here.
// syslog (LOG_NOTICE, "First daemon started.");
fprintf(f, "Some log.");
sleep (200);
break;
}
//syslog (LOG_NOTICE, "First daemon terminated.");
//closelog();
fclose(f);
return EXIT_SUCCESS;
}