FINLINE void releaseLockFile(
const char * pszBasePath,
FLMBOOL bDelete)
{
#ifndef FLM_UNIX
F_UNREFERENCED_PARM( bDelete);
F_UNREFERENCED_PARM( pszBasePath);
#endif
if( m_pLockFileHdl)
{
// Release the lock file
(void)m_pLockFileHdl->closeFile();
m_pLockFileHdl->Release();
m_pLockFileHdl = NULL;
#ifdef FLM_UNIX
if( bDelete)
{
IF_FileSystem * pFileSystem = f_getFileSysPtr();
char szTmpPath[ F_PATH_MAX_SIZE];
// Delete the lock file
f_strcpy( szTmpPath, pszBasePath);
pFileSystem->pathAppend( szTmpPath, "64.LCK");
pFileSystem->deleteFile( szTmpPath);
}
#endif
}
}
/****************************************************************************
Desc: This routine obtains exclusive access to a 64-bit file by creating
a .lck file. The object holds the .lck file open as long as the
64-bit file is open.
****************************************************************************/
RCODE F_MultiFileHdl::createLockFile(
const char * pszBasePath)
{
RCODE rc = NE_FLM_OK;
char szLockPath [F_PATH_MAX_SIZE];
F_FileHdl * pLockFileHdl = NULL;
FLMUINT uiIoFlags = FLM_IO_RDWR | FLM_IO_EXCL | FLM_IO_SH_DENYRW;
IF_FileSystem * pFileSystem = f_getFileSysPtr();
f_strcpy( szLockPath, pszBasePath);
pFileSystem->pathAppend( szLockPath, "64.LCK");
// Attempt to create the lock file. If it fails, the lock file
// may have been left because of a crash. Hence, we first try
// to delete the file. If that succeeds, we then attempt to
// create the file again. If it, or the 2nd create fail, we simply
// return an access denied error.
if( RC_BAD( rc = f_allocFileHdl( &pLockFileHdl)))
{
goto Exit;
}
#ifndef FLM_UNIX
// On Unix, we do not want to delete the file because it
// will succeed even if someone else has the file open.
uiIoFlags |= FLM_IO_DELETE_ON_RELEASE;
#endif
if( RC_BAD( pLockFileHdl->createFile( szLockPath, uiIoFlags)))
{
#ifndef FLM_UNIX
if (RC_BAD( pFileSystem->deleteFile( szLockPath)))
{
rc = RC_SET( NE_FLM_IO_ACCESS_DENIED);
goto Exit;
}
else if (RC_BAD( pLockFileHdl->createFile( szLockPath, uiIoFlags)))
{
rc = RC_SET( NE_FLM_IO_ACCESS_DENIED);
goto Exit;
}
#else
if( RC_BAD( pLockFileHdl->openFile( szLockPath, uiIoFlags)))
{
rc = RC_SET( NE_FLM_IO_ACCESS_DENIED);
goto Exit;
}
#endif
}
#ifdef FLM_UNIX
if( RC_BAD( pLockFileHdl->lock()))
{
rc = RC_SET( NE_FLM_IO_ACCESS_DENIED);
goto Exit;
}
#endif
m_pLockFileHdl = pLockFileHdl;
pLockFileHdl = NULL;
Exit:
if (pLockFileHdl)
{
(void)pLockFileHdl->closeFile();
pLockFileHdl->Release();
pLockFileHdl = NULL;
}
return( rc);
}
/****************************************************************************
Desc: Removes a 64-bit file
****************************************************************************/
RCODE F_MultiFileHdl::deleteMultiFile(
const char * pszPath)
{
RCODE rc = NE_FLM_OK;
IF_DirHdl * pDir = NULL;
char szTmpPath[ F_PATH_MAX_SIZE];
IF_FileSystem * pFileSystem = f_getFileSysPtr();
// Can't use this handle to delete something if we already
// have a file open.
if( m_bOpen)
{
// Can't jump to exit, because it calls releaseLockFile
return( RC_SET_AND_ASSERT( NE_FLM_FAILURE));
}
if( RC_BAD( rc = pFileSystem->doesFileExist( pszPath)))
{
goto Exit;
}
if( !pFileSystem->isDir( pszPath))
{
// If the path specifies a single file rather than a
// 64-bit directory, just go ahead and delete the file.
rc = pFileSystem->deleteFile( pszPath);
goto Exit;
}
if( RC_BAD( rc = createLockFile( pszPath)))
{
goto Exit;
}
if( RC_OK( pFileSystem->openDir( pszPath, "*.64", &pDir)))
{
// Remove all data files
for( rc = pDir->next(); !RC_BAD( rc) ; rc = pDir->next())
{
pDir->currentItemPath( szTmpPath);
f_assert( f_strstr( szTmpPath, ".64") != 0);
(void)pFileSystem->deleteFile( szTmpPath);
}
pDir->Release();
pDir = NULL;
rc = NE_FLM_OK;
}
// Release and delete the lock file
(void)releaseLockFile( pszPath, TRUE);
// Remove the directory
(void)pFileSystem->removeDir( pszPath);
Exit:
(void)releaseLockFile( pszPath, FALSE);
return( rc);
}
/****************************************************************************
Desc: Closes all data files associated with the object
****************************************************************************/
void F_MultiFileHdl::closeFile(
FLMBOOL bDelete)
{
RCODE rc = NE_FLM_OK;
FLMUINT uiLoop;
IF_DirHdl * pDir = NULL;
char szTmpPath[ F_PATH_MAX_SIZE];
IF_FileSystem * pFileSystem = f_getFileSysPtr();
if( !m_bOpen)
{
return;
}
for( uiLoop = 0; uiLoop < F_MULTI_FHDL_LIST_SIZE; uiLoop++)
{
if( m_pFileHdlList[ uiLoop].pFileHdl)
{
if( m_pFileHdlList[ uiLoop].bDirty)
{
(void)m_pFileHdlList[ uiLoop].pFileHdl->flush();
}
m_pFileHdlList[ uiLoop].pFileHdl->closeFile();
m_pFileHdlList[ uiLoop].pFileHdl->Release();
f_memset( &m_pFileHdlList[ uiLoop], 0, sizeof( FH_INFO));
}
}
m_ui64EOF = 0;
m_bOpen = FALSE;
if( bDelete)
{
if( RC_OK( pFileSystem->openDir(
m_szPath, "*.64", &pDir)))
{
// Remove all data files
for( rc = pDir->next(); !RC_BAD( rc) ; rc = pDir->next())
{
pDir->currentItemPath( szTmpPath);
f_assert( f_strstr( szTmpPath, ".64") != 0);
(void)pFileSystem->deleteFile( szTmpPath);
}
pDir->Release();
pDir = NULL;
}
// Release and delete the lock file
(void)releaseLockFile( m_szPath, TRUE);
// Remove the directory
(void)pFileSystem->removeDir( m_szPath);
}
else
{
(void)releaseLockFile( m_szPath, FALSE);
}
}