#include<unistd.h>
#include<stdio.h>
#include<fcntl.h>
#include<string.h>

char debug_mode = 0;

void child(){
	int logfile_fd;
	if(!debug_mode){
		close(0);
		close(1);
		close(2);
		logfile_fd = open("daemon_log", O_WRONLY | O_CREAT | O_TRUNC, 0644);
		dup2(logfile_fd, 1);
		dup2(logfile_fd, 2);
	}
	chdir("/"); // Wikipedia points out a lot of daemons do this
	char cwd[128];
	getcwd(cwd, 128);
	write(1, cwd, strlen(cwd));
	while(1){
		sleep(1);
		write(1, "Child is still alive\n", 21); 
	}
	// Won't run anyway
	close(logfile_fd);
}

int main(int argc, char ** argv){
	if(argc > 1 && !strcmp(argv[1], "--debug"))
		debug_mode = 1;

	if(debug_mode)
		child();
	else {
		pid_t pid = fork();
		if(pid) { // parent process
			return 0;
		} else { // child process
			child();
		}
	}
}