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ReactOS Development > Doxygen

Definition at line 400 of file istream.c.

Referenced by OpenStreamOnFile(), and SHCreateStreamOnFileW().

{
  DWORD dwAccess, dwShare, dwCreate;
  HANDLE hFile;

  TRACE("(%s,%d,0x%08X,%d,%p,%p)\n", debugstr_w(lpszPath), dwMode,
        dwAttributes, bCreate, lpTemplate, lppStream);

  if (!lpszPath || !lppStream || lpTemplate)
    return E_INVALIDARG;

  *lppStream = NULL;

  /* Access */
  switch (STGM_ACCESS_MODE(dwMode))
  {
  case STGM_READWRITE:
    dwAccess = GENERIC_READ|GENERIC_WRITE;
    break;
  case STGM_WRITE:
    dwAccess = GENERIC_WRITE;
    break;
  case STGM_READ:
    dwAccess = GENERIC_READ;
    break;
  default:
    return E_INVALIDARG;
  }

  /* Sharing */
  switch (STGM_SHARE_MODE(dwMode))
  {
  case 0:
    dwShare = FILE_SHARE_READ|FILE_SHARE_WRITE;
    break;
  case STGM_SHARE_DENY_READ:
    dwShare = FILE_SHARE_WRITE;
    break;
  case STGM_SHARE_DENY_WRITE:
    dwShare = FILE_SHARE_READ;
    break;
  case STGM_SHARE_EXCLUSIVE:
    dwShare = 0;
    break;
  case STGM_SHARE_DENY_NONE:
    dwShare = FILE_SHARE_READ|FILE_SHARE_WRITE;
    break;
  default:
    return E_INVALIDARG;
  }

  switch(STGM_CREATE_MODE(dwMode))
  {
  case STGM_FAILIFTHERE:
    dwCreate = bCreate ? CREATE_NEW : OPEN_EXISTING;
    break;
  case STGM_CREATE:
    dwCreate = CREATE_ALWAYS;
    break;
  default:
    return E_INVALIDARG;
  }

  /* Open HANDLE to file */
  hFile = CreateFileW(lpszPath, dwAccess, dwShare, NULL, dwCreate,
                      dwAttributes, 0);

  if(hFile == INVALID_HANDLE_VALUE)
    return HRESULT_FROM_WIN32(GetLastError());

  *lppStream = IStream_Create(lpszPath, hFile, dwMode);

  if(!*lppStream)
  {
    CloseHandle(hFile);
    return E_OUTOFMEMORY;
  }
  return S_OK;
}

Generated on Sun May 27 2012 05:47:14 for ReactOS by doxygen 1.7.6.1

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