/* Lock the volume. If the lock is already in the acquired state, then EFI_ACCESS_DENIED is returned. Otherwise, EFI_SUCCESS is returned. */
EFI_STATUS FatAcquireLockOrFail(VOID)
/* Lock the volume. If the lock is already in the acquired state, then EFI_ACCESS_DENIED is returned. Otherwise, EFI_SUCCESS is returned. */
EFI_STATUS FatAcquireLockOrFail(VOID)
{
  return EfiAcquireLockOrFail (&FatFsLock);
}