Someone

int main() {
  DIR *flow_directory;
  struct dirent *flow_files;
  struct stat *dir_ent_stat = malloc(sizeof(struct stat));
  char fentry[512];
  int numfile, i, file_count = 0;
  char *file_list[10000];
  char *file_regex = regcmp(FILE_REGEX);

  if(!(flow_directory = opendir(FLOWDIR))) {
        perror("Couldnt open flow directory: ");
        exit(-1);
        }

  while(1) {    /* Enter never ending loop */
    printf("Polling for files matching regex %s\n", FILE_REGEX);
    while(flow_files = readdir(flow_directory)) {
       snprintf((char *)&fentry, 512, "%s/%s",FLOWDIR, flow_files->d_name);
       if(!(stat((char *)&fentry, dir_ent_stat))) {
         if(S_ISREG(dir_ent_stat->st_mode))  {
           file_list[numfile] = strdup((char *)&fentry);
           numfile++;
         }
       }
    }
    for(i = 0; i < numfile; i++)
      if(regex(file_regex, file_list[i]))
         file_count++;
  printf("Found %d matching files on last poll\nSleeping for 30 seconds before polling...\n", file_count);
  file_count = 0;
  sleep(30);
  }
}