Exemplo n.º 1
0
jrd_file* PIO_create(Database* dbb, const Firebird::PathName& string,
					 const bool overwrite, const bool temporary, const bool share_delete)
{
/**************************************
 *
 *	P I O _ c r e a t e
 *
 **************************************
 *
 * Functional description
 *	Create a new database file.
 *
 **************************************/
	adjustFsCacheOnce.init();

	const TEXT* file_name = string.c_str();

	DWORD dwShareMode = (temporary ? g_dwShareTempFlags : g_dwShareFlags);
	if (share_delete)
		dwShareMode |= FILE_SHARE_DELETE;

	DWORD dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL | g_dwExtraFlags;
	if (temporary)
		dwFlagsAndAttributes |= g_dwExtraTempFlags;

	const HANDLE desc = CreateFile(file_name,
					  GENERIC_READ | GENERIC_WRITE,
					  dwShareMode,
					  NULL,
					  (overwrite ? CREATE_ALWAYS : CREATE_NEW),
					  dwFlagsAndAttributes,
					  0);

	if (desc == INVALID_HANDLE_VALUE)
	{
		ERR_post(Arg::Gds(isc_io_error) << Arg::Str("CreateFile (create)") << Arg::Str(string) <<
				 Arg::Gds(isc_io_create_err) << Arg::Windows(GetLastError()));
	}

	// File open succeeded.  Now expand the file name.
	// workspace is the expanded name here

	Firebird::PathName workspace(string);
	ISC_expand_filename(workspace, false);

	return setup_file(dbb, workspace, desc, false);
}
Exemplo n.º 2
0
jrd_file* PIO_open(Database* dbb,
				   const Firebird::PathName& string,
				   const Firebird::PathName& file_name)
{
/**************************************
 *
 *	P I O _ o p e n
 *
 **************************************
 *
 * Functional description
 *	Open a database file.
 *
 **************************************/
	const TEXT* const ptr = (string.hasData() ? string : file_name).c_str();
	bool readOnly = false;
	const bool shareMode = dbb->dbb_config->getSharedDatabase();

	adjustFsCacheOnce.init();

	HANDLE desc = CreateFile(ptr,
					  GENERIC_READ | GENERIC_WRITE,
					  getShareFlags(shareMode),
					  NULL,
					  OPEN_EXISTING,
					  FILE_ATTRIBUTE_NORMAL |
					  g_dwExtraFlags,
					  0);

	if (desc == INVALID_HANDLE_VALUE)
	{
		// Try opening the database file in ReadOnly mode.
		// The database file could be on a RO medium (CD-ROM etc.).
		// If this fileopen fails, return error.
		desc = CreateFile(ptr,
						  GENERIC_READ,
						  FILE_SHARE_READ,
						  NULL,
						  OPEN_EXISTING,
						  FILE_ATTRIBUTE_NORMAL |
						  g_dwExtraFlags, 0);

		if (desc == INVALID_HANDLE_VALUE)
		{
			ERR_post(Arg::Gds(isc_io_error) << Arg::Str("CreateFile (open)") << Arg::Str(file_name) <<
					 Arg::Gds(isc_io_open_err) << Arg::Windows(GetLastError()));
		}
		else
		{
			// If this is the primary file, set Database flag to indicate that it is
			// being opened ReadOnly. This flag will be used later to compare with
			// the Header Page flag setting to make sure that the database is set ReadOnly.
			readOnly = true;
			PageSpace* pageSpace = dbb->dbb_page_manager.findPageSpace(DB_PAGE_SPACE);
			if (!pageSpace->file)
				dbb->dbb_flags |= DBB_being_opened_read_only;
		}
	}

	return setup_file(dbb, string, desc, readOnly, shareMode);
}