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);
}
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);
}
