#include <stdio.h>      /* for fprintf */
#include <stdlib.h>     /* for exit    */
#include <sys/types.h>  /* for open    */
#include <sys/stat.h>   /* for open    */
#include <fcntl.h>      /* for open    */

#include "fileLock.h"

int main(int argc, char** argv){
  int fd;
  char* file;
  if(argc != 2){
    fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
    exit(EXIT_FAILURE);
  } 
  file = argv[1];
  fd = open(file,  O_RDWR, S_IRWXU);
  if(fd < 0){
    perror("File opening failed.");
    exit(EXIT_FAILURE);
  } else {
    int lval;
    fileLock_p lock = makeLock();
    if(lock == NULL){
      perror("Lock creation failed.");
      exit(EXIT_FAILURE);
    }
    fprintf(stderr, "Attempting to lock %s\n", file);
    lval = getLock(lock, fd);
    if(lval == -1){
      perror("Locking failed");
      exit(EXIT_FAILURE);
    }
    fprintf(stderr, "Successfully locked %s (hit any key to continue)\n", file);
    getchar();
    unLock(lock, fd);
    freeLock(lock);
    exit(EXIT_SUCCESS);
  }
}