char *inputDir; // This value is set at program startup from an
                // environment variable (getenv). It is free'd when
                // the used pressed Ctrl-C to terminate the
                // application (if ever). 

// pollDirectory( ) is called within a for( ;; ) statement, if the
// return value is < 0, the application terminates
int pollDirectory( ){
   pid_t pid;
   struct direct *dirp;
   struct stat statbuf;
   struct stat filestat;
   char inPath[256];
   char tempPath[256];
   char msg[1024];
   int inSz = 0;
   int currNumScreened = 0;
   DIR *dp;

   // Ensure directory exists
   if( lstat( inputDir, &statbuf ) < 0 ) {
      // Report error
      return -1;
   }

   // path is a directory
   if( S_ISDIR( statbuf.st_mode ) == 0 ) {
      // Report error
      return -1;
   }

   // Code to open directory and parse through filenames
      // fork child processes to handle the files, child process renames
      // and moves the listed files. 
   // After all the directory listing has been processed, closedir( ) 
   // and return the number of files processed
}