Method MakeEmptyFile

storage/connect/filamvct.cpp:373–406

/ VCT Create an empty file for Vector formatted tables. */ /

/*  VCT Create an empty file for Vector formatted tables.              */
/***********************************************************************/
bool VCTFAM::MakeEmptyFile(PGLOBAL g, PCSZ fn)
  {
  // Vector formatted file: this will create an empty file of the
  // required length if it does not exists yet.
  char filename[_MAX_PATH], c = 0;
  int  h, n;

  PlugSetPath(filename, fn, Tdbp->GetPath());
#if defined(_WIN32)
  h= global_open(g, MSGID_OPEN_EMPTY_FILE, filename, _O_CREAT | _O_WRONLY, S_IREAD | S_IWRITE);
#else   // !_WIN32
  h= global_open(g, MSGID_OPEN_EMPTY_FILE, filename,  O_CREAT |  O_WRONLY, S_IREAD | S_IWRITE);
#endif  // !_WIN32

  if (h == -1)
    return true;

  n = (Header == 1 || Header == 3) ? sizeof(VECHEADER) : 0;

  if (lseek(h, n + MaxBlk * Nrec * Lrecl - 1, SEEK_SET) < 0)
    goto err;

  // This actually fills the empty file
  if (write(h, &c, 1) < 0)     
    goto err;

  close(h);
  return false;
  
 err:
  snprintf(g->Message, sizeof(g->Message), MSG(MAKE_EMPTY_FILE), To_File, strerror(errno));
  close(h);
  return true;
  } // end of MakeEmptyFile

/***********************************************************************/
/*  VCT Access Method opening routine.                                 */