/****************************************************************************
Desc: Returns the requested file handle
****************************************************************************/
RCODE F_MultiFileHdl::getFileHdl(
FLMUINT uiFileNum,
FLMBOOL bGetForWrite,
IF_FileHdl ** ppFileHdl)
{
RCODE rc = NE_FLM_OK;
IF_FileSystem * pFileSystem = f_getFileSysPtr();
FLMUINT uiSlot;
IF_FileHdl * pTmpHdl;
char szPath[ F_PATH_MAX_SIZE];
f_assert( m_bOpen);
*ppFileHdl = NULL;
uiSlot = uiFileNum % F_MULTI_FHDL_LIST_SIZE;
pTmpHdl = m_pFileHdlList[ uiSlot].pFileHdl;
if( pTmpHdl && m_pFileHdlList[ uiSlot].uiFileNum != uiFileNum)
{
if( RC_BAD( rc = pTmpHdl->flush()))
{
goto Exit;
}
pTmpHdl->closeFile();
pTmpHdl->Release();
pTmpHdl = NULL;
f_memset( &m_pFileHdlList[ uiSlot], 0, sizeof( FH_INFO));
}
if( !pTmpHdl)
{
dataFilePath( uiFileNum, szPath);
if( RC_BAD( rc = pFileSystem->openFile( szPath,
FLM_IO_RDWR, &pTmpHdl)))
{
if( rc == NE_FLM_IO_PATH_NOT_FOUND && bGetForWrite)
{
if( RC_BAD( rc = pFileSystem->createFile( szPath,
FLM_IO_RDWR, &pTmpHdl)))
{
goto Exit;
}
}
else
{
goto Exit;
}
}
m_pFileHdlList[ uiSlot].pFileHdl = pTmpHdl;
m_pFileHdlList[ uiSlot].uiFileNum = uiFileNum;
f_assert( !m_pFileHdlList[ uiSlot].bDirty);
}
*ppFileHdl = m_pFileHdlList[ uiSlot].pFileHdl;
if( bGetForWrite)
{
m_pFileHdlList[ uiSlot].bDirty = TRUE;
}
Exit:
return( rc);
}
/********************************************************************
Desc: Edit a field
*********************************************************************/
FLMBOOL ViewEdit(
FLMBOOL bWriteEntireBlock
)
{
FLMUINT uiBytesToWrite;
FLMUINT uiBytesWritten;
FLMUINT uiNum;
FLMUINT64 ui64Num;
FLMUINT32 ui32Num;
FLMUINT16 ui16Num;
char szTempBuf[ 100];
F_BLK_HDR * pBlkHdr = NULL;
RCODE rc;
FLMUINT uiFileOffset;
FLMUINT uiFileNumber;
FLMBOOL bValEntered;
FLMUINT uiBytesRead;
IF_FileHdl * pFileHdl;
FLMUINT32 ui32CRC;
FLMUINT uiBlockOffset;
FLMUINT uiBlkAddress = 0;
FLMBYTE ucSENValue[ 9];
FLMBYTE * pucSENBuffer = &ucSENValue[0];
FLMUINT uiSENLen = 0;
if ((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_DISABLED)
{
ViewShowError( "Cannot modify this value");
return( FALSE);
}
uiFileOffset = gv_pViewMenuCurrItem->uiModFileOffset;
uiFileNumber = gv_pViewMenuCurrItem->uiModFileNumber;
switch (gv_pViewMenuCurrItem->uiModType & 0x0F)
{
case MOD_SEN5:
// The SEN value is at most 5 bytes.
ui64Num = 0;
if (!ViewEditNum( &ui64Num,
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 5,
~((FLMUINT64)0)))
{
return( FALSE);
}
// Need to know make a SEN out of this first.
uiSENLen = f_encodeSEN( ui64Num, &pucSENBuffer);
break;
case MOD_SEN9:
// The SEN value is at most 5 bytes.
ui64Num = 0;
if (!ViewEditNum( &ui64Num,
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 9,
~((FLMUINT64)0)))
{
return( FALSE);
}
// Need to know make a SEN out of this first.
uiSENLen = f_encodeSEN( ui64Num, &pucSENBuffer);
break;
case MOD_FLMUINT64:
uiBytesToWrite = 8;
if (!ViewEditNum( &ui64Num,
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 8,
~((FLMUINT64)0)))
{
return( FALSE);
}
if (gv_pViewMenuCurrItem->uiModType & MOD_NATIVE)
{
f_memcpy( szTempBuf, &ui64Num, 8);
}
else
{
U642FBA( ui64Num, (FLMBYTE *)szTempBuf);
}
break;
case MOD_FLMUINT32:
uiBytesToWrite = 4;
if (!ViewEditNum( &ui32Num,
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 4,
(FLMUINT64)0xFFFFFFFF))
{
return( FALSE);
}
if (gv_pViewMenuCurrItem->uiModType & MOD_NATIVE)
{
f_memcpy( szTempBuf, &ui32Num, 4);
}
else
{
UD2FBA( ui32Num, (FLMBYTE *)szTempBuf);
}
break;
case MOD_FLMUINT16:
uiBytesToWrite = 2;
if (!ViewEditNum( &ui16Num,
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 2,
(FLMUINT64)0xFFFF))
{
return( FALSE);
}
if (gv_pViewMenuCurrItem->uiModType & MOD_NATIVE)
{
f_memcpy( szTempBuf, &ui16Num, 2);
}
else
{
UW2FBA( ui16Num, (FLMBYTE *)szTempBuf);
}
break;
case MOD_FLMBYTE:
uiBytesToWrite = 1;
if (!ViewEditNum( &szTempBuf [0],
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX), 1,
(FLMUINT64)0xFF))
{
return( FALSE);
}
break;
case MOD_BINARY:
uiBytesToWrite = gv_pViewMenuCurrItem->uiModBufLen;
if (HAVE_HORIZ_CUR( gv_pViewMenuCurrItem))
{
uiFileOffset += gv_pViewMenuCurrItem->uiHorizCurPos;
uiBytesToWrite -= gv_pViewMenuCurrItem->uiHorizCurPos;
}
if (!ViewEditBinary( NULL, (FLMBYTE *)szTempBuf,
&uiBytesToWrite, &bValEntered) ||
!bValEntered)
{
return( FALSE);
}
break;
case MOD_TEXT:
if (!ViewEditText( "Enter Value: ",
szTempBuf, gv_pViewMenuCurrItem->uiModBufLen,
&bValEntered) ||
!bValEntered)
{
return( FALSE);
}
uiBytesToWrite = gv_pViewMenuCurrItem->uiModBufLen;
break;
case MOD_LANGUAGE:
if( !ViewEditLanguage( &uiNum))
{
return( FALSE);
}
szTempBuf[0] = (FLMBYTE)uiNum;
uiBytesToWrite = 1;
break;
case MOD_CHILD_BLK:
if( !ViewEditNum( &uiNum, TRUE, 4, (FLMUINT64)0xFFFFFFFF))
{
return( FALSE);
}
uiBytesToWrite = 4;
UD2FBA( (FLMUINT32)uiNum, (FLMBYTE *)szTempBuf);
break;
case MOD_BITS:
if (!ViewEditBits( (FLMBYTE *)&szTempBuf[ 0],
((gv_pViewMenuCurrItem->uiModType & 0xF0) == MOD_HEX),
(FLMBYTE)gv_pViewMenuCurrItem->uiModBufLen))
{
return( FALSE);
}
uiBytesToWrite = 1;
break;
}
// Read in the block if necessary
if (!bWriteEntireBlock)
{
pBlkHdr = (F_BLK_HDR *)(&szTempBuf [0]);
}
else
{
uiBlockOffset = (FLMUINT)(uiFileOffset %
(FLMUINT)gv_ViewDbHdr.ui16BlockSize);
uiBlkAddress = FSBlkAddress( uiFileNumber,
uiFileOffset - uiBlockOffset);
uiFileOffset = uiFileOffset - uiBlockOffset;
// Don't convert the block if the address is zero - means we
// are updating the database header.
if (!ViewBlkRead( uiBlkAddress, &pBlkHdr,
!uiBlkAddress ? FALSE : TRUE,
(FLMUINT)gv_ViewDbHdr.ui16BlockSize,
NULL, NULL, &uiBytesRead, FALSE))
{
return( FALSE);
}
uiBytesToWrite = uiBytesRead;
// Convert to native format
if (!uiBlkAddress)
{
if (hdrIsNonNativeFormat( (XFLM_DB_HDR *)pBlkHdr))
{
convertDbHdr( (XFLM_DB_HDR *)pBlkHdr);
}
}
else
{
if (blkIsNonNativeFormat( pBlkHdr))
{
convertBlk( (FLMUINT)gv_ViewDbHdr.ui16BlockSize, pBlkHdr);
}
}
// Put the data in the appropriate place in the block
if ((gv_pViewMenuCurrItem->uiModType & 0x0F) == MOD_BITS)
{
FLMBYTE ucMask = (FLMBYTE)gv_pViewMenuCurrItem->uiModBufLen;
FLMBYTE * pucBuf = (FLMBYTE *)pBlkHdr;
// Unset the bits, then OR in the new bits
pucBuf [uiBlockOffset] &= (~(ucMask));
pucBuf [uiBlockOffset] |= szTempBuf[ 0];
}
else if ((gv_pViewMenuCurrItem->uiModType & 0x0F) == MOD_SEN5 ||
(gv_pViewMenuCurrItem->uiModType & 0x0F) == MOD_SEN9)
{
// Need to make sure the size of the original SEN is the same as the
// new SEN.
const FLMBYTE * pucOrigSEN = (FLMBYTE *)pBlkHdr + uiBlockOffset;
FLMBYTE ucBuffer[9];
FLMBYTE * pucBuffer = &ucBuffer[0];
FLMUINT64 ui64Value;
FLMUINT uiOrigSENLen;
if (RC_BAD( rc = f_decodeSEN64( &pucOrigSEN,
(FLMBYTE *)pBlkHdr +
gv_ViewDbHdr.ui16BlockSize,
&ui64Value)))
{
ViewShowRCError( "Decoding original SEN value", rc);
}
uiOrigSENLen = f_encodeSEN( ui64Value, &pucBuffer);
if (uiOrigSENLen != uiSENLen)
{
ViewShowRCError( "SEN Length does not match original",
NE_XFLM_FAILURE);
}
else
{
f_memcpy( (FLMBYTE *)pBlkHdr + uiBlockOffset, ucSENValue,
uiSENLen);
}
}
else
{
f_memcpy( (FLMBYTE *)pBlkHdr + uiBlockOffset, szTempBuf,
uiBytesToWrite);
}
// Calculate CRC
if (!uiBlkAddress)
{
ui32CRC = calcDbHdrCRC( (XFLM_DB_HDR *)pBlkHdr);
((XFLM_DB_HDR *)pBlkHdr)->ui32HdrCRC = ui32CRC;
uiBytesToWrite = sizeof( XFLM_DB_HDR);
}
else
{
FLMUINT uiBlkLen;
uiBlkLen = gv_ViewDbHdr.ui16BlockSize;
#if 0
if ((FLMUINT)pBlkHdr->ui16BlkBytesAvail >
(FLMUINT)gv_ViewDbHdr.ui16BlockSize - blkHdrSize( pBlkHdr))
{
uiBlkLen = blkHdrSize( pBlkHdr);
}
else
{
uiBlkLen = (FLMUINT)(gv_ViewDbHdr.ui16BlockSize -
pBlkHdr->ui16BlkBytesAvail);
}
#endif
// Calculate and set the block CRC.
ui32CRC = calcBlkCRC( pBlkHdr, uiBlkLen);
pBlkHdr->ui32BlkCRC = ui32CRC;
}
}
if (RC_BAD( rc = gv_pSFileHdl->getFileHdl( uiFileNumber, TRUE, &pFileHdl)))
{
ViewShowRCError( "getting file handle", rc);
}
// Write the data out to the file
else if (RC_BAD( rc = pFileHdl->write( uiFileOffset, uiBytesToWrite,
pBlkHdr, &uiBytesWritten)))
{
ViewShowRCError( "updating file", rc);
}
else if (RC_BAD( rc = pFileHdl->flush()))
{
ViewShowRCError( "flushing data to file", rc);
}
else if (bWriteEntireBlock && !uiBlkAddress)
{
f_memcpy( &gv_ViewDbHdr, pBlkHdr, sizeof( XFLM_DB_HDR));
}
// Free any memory used to read in the data block
if (pBlkHdr && pBlkHdr != (F_BLK_HDR *)(&szTempBuf [0]))
{
f_free( &pBlkHdr);
}
return( TRUE);
}
/****************************************************************************
Desc: Copy a file that is one of the files of the database.
*****************************************************************************/
FSTATIC RCODE flmCopyFile(
IF_FileSystem * pFileSystem,
FLMUINT uiStartOffset,
FLMUINT uiEndOffset,
DB_COPY_INFO * pDbCopyInfo,
COPIED_NAME ** ppCopiedListRV,
FLMBYTE * pucInMemLogHdr,
FLMBOOL bOkToTruncate,
STATUS_HOOK fnStatusCallback,
void * UserData)
{
RCODE rc = FERR_OK;
FLMBYTE * pucBuffer = NULL;
IF_FileHdl * pSrcFileHdl = NULL;
IF_FileHdl * pDestFileHdl = NULL;
FLMUINT uiBufferSize = 32768;
FLMUINT uiBytesToRead;
FLMUINT uiBytesRead;
FLMUINT uiBytesWritten;
FLMUINT uiOffset;
FLMBYTE * pucLogHdr = NULL;
FLMUINT uiNewChecksum;
FLMBOOL bCreatedDestFile = FALSE;
// Open the source file.
if( RC_BAD( rc = gv_FlmSysData.pFileSystem->openFile(
pDbCopyInfo->szSrcFileName, gv_FlmSysData.uiFileOpenFlags,
&pSrcFileHdl)))
{
goto Exit;
}
// First attempt to open the destination file. If it does
// not exist, attempt to create it.
if (RC_BAD( rc = gv_FlmSysData.pFileSystem->openFile(
pDbCopyInfo->szDestFileName, gv_FlmSysData.uiFileOpenFlags,
&pDestFileHdl)))
{
if (rc != FERR_IO_PATH_NOT_FOUND &&
rc != FERR_IO_INVALID_PATH)
{
goto Exit;
}
if( RC_BAD( rc = gv_FlmSysData.pFileSystem->createFile(
pDbCopyInfo->szDestFileName, gv_FlmSysData.uiFileCreateFlags,
&pDestFileHdl)))
{
goto Exit;
}
bCreatedDestFile = TRUE;
}
// Allocate a buffer for reading and writing
if( RC_BAD( rc = f_allocAlignedBuffer( uiBufferSize, &pucBuffer)))
{
goto Exit;
}
// Allocate a buffer for the log header
if( RC_BAD( rc = f_allocAlignedBuffer( 2048, &pucLogHdr)))
{
goto Exit;
}
// If uiStartOffset is 2048, it is the special case of
// the control file, and we are not copying the first 2K.
// However, we need to set up the first 2K so that if
// someone reads the first 2K, it will return them a
// maintenance in progress error.
if (uiStartOffset == 2048)
{
// Read the first 2K of the source file.
if (RC_BAD( rc = pSrcFileHdl->read( 0, 2048, pucBuffer, &uiBytesRead)))
{
if (rc == FERR_IO_END_OF_FILE)
{
rc = FERR_OK;
}
else
{
goto Exit;
}
}
// Zero out whatever part of the 2K we didn't get on the read.
if (uiBytesRead < 2048)
{
f_memset( &pucBuffer[ uiBytesRead], 0, (int)(2048 - uiBytesRead));
}
// Attempt to read the log header from the destination file.
// It is OK if we can't read it, because if we created the
// destination file, these bytes may not be present.
if( bCreatedDestFile ||
RC_BAD( pDestFileHdl->read( 0, 2048, pucLogHdr, &uiBytesRead)))
{
f_memset( pucLogHdr, 0, sizeof( 2048));
}
// Set the transaction ID to zero. MUST ALSO SET THE TRANS ACTIVE FLAG
// TO FALSE - OTHERWISE READERS WILL ATTEMPT TO DECREMENT THE
// TRANSACTION ID AND WILL END UP WITH 0xFFFFFFFF - very bad!
// We must use zero, because it is the only transaction ID that will not
// appear on ANY block.
UD2FBA( 0, &pucLogHdr[ 16 + LOG_CURR_TRANS_ID]);
// Recalculate the log header checksum so that readers will not get a
// checksum error.
uiNewChecksum = lgHdrCheckSum( &pucLogHdr[ 16], FALSE);
UW2FBA( (FLMUINT16)uiNewChecksum, &pucLogHdr[ 16 + LOG_HDR_CHECKSUM]);
f_memcpy( &pucBuffer[ 16], &pucLogHdr[ 16], LOG_HEADER_SIZE);
// Write this "special" first 2K into the destination file.
// The real first 2K from the source file will be copied in
// at a later time.
if (RC_BAD( rc = pDestFileHdl->write( 0, 2048,
pucBuffer, &uiBytesWritten)))
{
goto Exit;
}
// Save the log header to the in-memory version of the log
// header as well - if pucInMemLogHdr is NULL, it is pointing
// to the pFile->ucLastCommittedLogHdr buffer.
if (pucInMemLogHdr)
{
f_memcpy( pucInMemLogHdr, &pucLogHdr[ 16], LOG_HEADER_SIZE);
}
}
// Read from source file until we hit EOF in the file or
// we hit the end offset.
uiOffset = uiStartOffset;
for (;;)
{
uiBytesToRead = (FLMUINT)((uiEndOffset - uiOffset >=
uiBufferSize)
? uiBufferSize
: (FLMUINT)(uiEndOffset - uiOffset));
// Read data from source file.
if (RC_BAD( rc = pSrcFileHdl->read( uiOffset, uiBytesToRead,
pucBuffer, &uiBytesRead)))
{
if (rc == FERR_IO_END_OF_FILE)
{
rc = FERR_OK;
if (!uiBytesRead)
{
break;
}
}
else
{
goto Exit;
}
}
// Write data to destination file.
if (RC_BAD( rc = pDestFileHdl->write( uiOffset,
uiBytesRead, pucBuffer, &uiBytesWritten)))
{
goto Exit;
}
// See if we wrote out the buffer that has the log header
// If so, we need to copy it back to the in-memory log
// header.
if ((pucInMemLogHdr) &&
(uiOffset <= 16) &&
(uiOffset + uiBytesWritten >= 16 + LOG_HEADER_SIZE))
{
f_memcpy( pucInMemLogHdr, &pucBuffer[ 16 - uiOffset],
LOG_HEADER_SIZE);
}
uiOffset += uiBytesWritten;
// Do callback to report progress.
if (fnStatusCallback)
{
pDbCopyInfo->ui64BytesCopied += (FLMUINT64)uiBytesWritten;
if (RC_BAD( rc = (*fnStatusCallback)( FLM_DB_COPY_STATUS,
(void *)pDbCopyInfo,
(void *)0, UserData)))
{
goto Exit;
}
pDbCopyInfo->bNewSrcFile = FALSE;
}
// Quit once we reach the end offset or we read fewer bytes
// than we asked for.
if (uiOffset >= uiEndOffset || uiBytesRead < uiBytesToRead)
{
break;
}
}
// If we overwrote the destination file, as opposed to creating
// it, truncate it in case it was larger than the number of
// bytes we actually copied.
if (!bCreatedDestFile && bOkToTruncate)
{
if (RC_BAD( rc = pDestFileHdl->truncateFile( uiOffset)))
{
goto Exit;
}
}
// If the copy succeeded, add the destination name to a list
// of destination files. This is done so we can clean up
// copied files if we fail somewhere in the overall database
// copy.
if (ppCopiedListRV)
{
COPIED_NAME * pCopyName;
if( RC_BAD( rc = f_alloc(
(FLMUINT)sizeof( COPIED_NAME), &pCopyName)))
{
goto Exit;
}
f_strcpy( pCopyName->szPath, pDbCopyInfo->szDestFileName);
pCopyName->pNext = *ppCopiedListRV;
*ppCopiedListRV = pCopyName;
}
Exit:
if( pucBuffer)
{
f_freeAlignedBuffer( &pucBuffer);
}
if( pucLogHdr)
{
f_freeAlignedBuffer( &pucLogHdr);
}
if( pSrcFileHdl)
{
pSrcFileHdl->Release();
}
if( pDestFileHdl)
{
pDestFileHdl->flush();
pDestFileHdl->Release();
}
// Attempt to delete the destination file if
// we didn't successfully copy it.
if( RC_BAD( rc))
{
(void)pFileSystem->deleteFile( pDbCopyInfo->szDestFileName);
}
return( rc);
}
