In reply to:

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/*Includes needed: (maybe not all are needed?)*/
#include <stdlib.h>
#include <sys/ioctl.h>
#include "hijack.h"
#include <time.h>
#include <sys/time.h>
#include <linux/errno.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include "vfdlib.h"

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Well, you only need to include <stdlib.h> once...

In the absence of dependencies, it's probably best to include standard headers first, then sys/, linux/, and local (quotes rather than angles) headers in that order.