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//____________________________________________________________________________
//
//
// FILE NAME : mtfapi.h
//
// DESCRIPTION : An object that provides api for creating mtf format structures
// (see detail description below)
//
// CREATED: 7/7/00 , based on an old C api sources (mtf_api.h , mtf_api.cpp)
//
/*****************************************************************************
DETAIL DESCRIPTION
NOTE: See the file MTF_TST.C for an example showing how to use this API
OVERVIEW========The MTF API provides a set of structures, each of which corresponds (but is notidentical to) to the structures described in the Microsoft Tape Format reference manual. The client instanciates these structures, fills in the fields and then uses an MTF API function to format the information in the structure into a suppliedbuffer in MTF format. The buffer is then padded up to the next alignment factorusing an MTF API call and then may then be written to tape using WIN32 Write.
For example, to write an MTF TAPE DBLK,
1) Instanciate the MTF API structures. The common header structure is used separately so that it can be re-used among DBLK writes MTF_DBLK_HDR_INFO sHdr; MTF_DBLK_TAPE_INFO sTape;
2) Use MTF API set default functions to set default values of these
MTF_SetDblkHdrDefaults(&sHdr); MTF_SetTAPEDefaults(&sTape);
3) Override the default values as necessary
sHdr.uFormatLogicalAddress = ... ... sTape.szTapeName = L"MY TAPE!" ...
4) Use the MTF API calls to format the contents of these structures into a buffer. If the API needs more room than BUFSIZE then then ammount needed is stored in nBufUsed. Otherwise nBufUsed reflects the amount of space in the buffer used by the call.
MTF_WriteTAPEDblk(&sHdr, &sTape, pBuffer, BUFSIZE, &nBufUsed);
5) NOTE WELL: The write calls *DO NOT PAD* to the next alignment index. But this is easily done using the MTF API call:
MTF_PadToNextAlignmentFactor(pBuffer, nBufUsed, BUFSIZE, &nBufUsed);
6) At this point, nBufUsed % MTF_GetAlignmentFactor should == 0. If our blocksize evenly divides our alignment factor, then we can use the WIN32 Write call to
WriteFile(hTape, pBuffer, nBufUsed, &nBytesWritten, 0);
Since our blocksize divides our AF, then nBytesWritten should == nBufUsed
*** SEE THE MTF_TST.C FOR A COMPLETE EXAMPLE SHOWING THE USE OF THIS API TO CREATE A BACKUP SET
MTF API DATA STRUCTURE AND FUNCTION SUMMARY======================================================================================**summary only -- generic detail comments appear below**
LOW LEVEL TYPES===============The following are typedefed to the corresponding "unsigned __intxx"
types: UINT8 UINT16 UINT32 UINT64
functions:MTF_CreateUINT64() -- creates a 64 bit unsigned from two UINT32 values (lsb & msb)
DATE & TIME===========MTF_DATE_TIME -- structure used by MTF API for holding packed date & time info MTF_CreateDateTimeNull() -- returns a null MTF_DATE_TIMEMTF_CreateDateTime() -- creates MTF_DATE_TIME from year, month, day, hour, min, secMTF_CreateDateTimeFromTM() -- creates MTF_DATE_TIME from struct tm in <time.h>MTF_CreateDateTimeFromFileTime() -- creates MTF_DATE_TIME from FILETIME used by FindFirst/FindNextMTF_CreateDateTimeToTM() -- fills in a struct tm structure given an MTF_DATE_TIME struct
ALIGNMENT FACTOR================MTF_SetAlignmentFactor -- sets the alignment factor for the MTF API (you must do this)MTF_GetAlignmentFactor -- returns the set alignment factorMTF_PadToNextAlignmentFactor -- Pads out a buffer using an SPAD to the next alignment factorMTF_PadToNextPhysicalBlockBoundary -- Pads out a buffer using an SPAD to the next physical block boundary
MTF COMMON HEADER BLOCK=======================MTF_DBLK_HDR_INFO -- common block header (must be supplied to all calls to write dblksMTF_SetDblkHdrDefaults -- sets default values (always call this before you set your own)
MTF TAPE DBLK INFO==================MTF_DBLK_TAPE_INFO -- info corresponding to a TAPE dblk MTF_SetTAPEDefaults -- sets defaults (always do this before setting your own)MTF_WriteTAPEDblk -- formats info in MTF_DBLK_TAPE_INFO to tapeMTF_ReadTAPEDblk -- reads info back from a buffer holding MTF FORMATTED TAPE DBLK
MTF SSET DBLK INFO==================MTF_DBLK_SSET_INFO -- all similar to above but for SSET DBLKMTF_SetSSETDefaults -- MTF_WriteSSETDblk -- MTF_ReadSSETDblk --
MTF VOLB DBLK INFO==================MTF_DBLK_VOLB_INFO -- all similar to above but for VOLB DBLKMTF_SetVOLBDefaults -- MTF_WriteVOLBDblk -- MTF_ReadVOLBDblk -- MTF_SetVOLBForDevice -- sets default values given a device name ("C:") using GetVolumeInformation (WIN32 call)
MTF DIRB DBLK INFO==================MTF_DBLK_DIRB_INFO -- all similar to above but for DIRB DBLKMTF_SetDIRBDefaults -- MTF_WriteDIRBDblk -- (dblk only -- no stream)MTF_ReadDIRBDblk -- MTF_SetDIRBFromFindData -- sets default values given a WIN32_FIND_DATAW struct (returned from calls to WIN32 FindFirst, FindNext, etc..
MTF FILE DBLK INFO==================MTF_DBLK_FILE_INFO -- all similar to above but for FILE DBLKMTF_SetFILEDefaults -- MTF_WriteFILEDblk -- (dblk only -- no stream)MTF_ReadFILEDblk -- MTF_SetFILEFromFindData -- sets default values given a WIN32_FIND_DATAW struct (returned from calls to WIN32 FindFirst, FindNext, etc..
MTF CFIL DBLK INFO==================MTF_DBLK_CFIL_INFO -- all similar to above but for CFIL DBLKMTF_SetCFILDefaults -- MTF_WriteCFILDblk -- MTF_ReadCFILDblk --
MTF ESET DBLK INFO==================MTF_DBLK_ESET_INFO -- all similar to above but for ESET DBLKMTF_SetESETDefaults -- MTF_WriteESETDblk -- MTF_ReadESETDblk --
MTF EOTM DBLK INFO==================MTF_DBLK_EOTM_INFO -- all similar to above but for EOTM DBLKMTF_SetEOTMDefaults -- MTF_WriteEOTMDblk -- MTF_ReadEOTMDblk --
MTF STREAM INFO==================MTF_STREAM_INFO -- all similar to above but for EOTM DBLKMTF_SetSTREAMDefaults -- MTF_WriteSTREAMHeader -- MTF_ReadSTREAMHeader -- MTF_SetSTREAMDefaultsFromStreamId -- sets stream defaults from a WIN32_STREAM_ID struct (returned from the WIN32 BackupRead function)
***********************************************************************************/
#ifndef _MTFAPI_H_
#define _MTFAPI_H_
#include <windows.h>
#include <stdlib.h>
#include <wchar.h>
#include <time.h>
/***********************************************************************************
**************************************************************************************************************************************************************************** MTF Constants, defines and bit masks***********************************************************************************************************************************************************************************************************************************************************/
/* ==================================================================================
MTF ERROR CODES================================================================================== */
#define MTF_ERROR_NONE 0
#define MTF_ERROR_BUFFER_TOO_SMALL 1000
#define MTF_NO_STREAMS 1001
#define MTF_OUT_OF_MEMORY 1002
/* ==================================================================================
MTF Misc. Defaults and Constants================================================================================== */#define MTF_DEFAULT_ALIGNMENT_FACTOR 1024;
#define MTF_FORMAT_VER_MAJOR 1
#define MTF_FORMAT_VER_MINOR 0 // BMD: This API is verison 5; use 0 for compatibility with NT Backup
#define MTF_PW_ENCRYPT_NONE 0
#define MTF_DATA_ENCRYPT_NONE 0
#define MTF_ECC_NONE 0
#define MTF_COMPRESS_NONE 0
#define MTF_OTC_NONE 0
#define MTF_OTC_TYPE 1
#define MTF_OTC_VERSION 2
#define MTF_LOCAL_TZ 127
#define MTF_STRING_NONE 0
#define MTF_STRING_ANSI_STR 1
#define MTF_STRING_UNICODE_STR 2
#define MTF_OSID_NT 14
#define MTF_OSID_DOS 24
/* ==================================================================================
MTF Block Types================================================================================== */
#define MTF_ID_TAPE "TAPE" /* Tape Header ID */
#define MTF_ID_VOLB "VOLB" /* Volume Control Block ID */
#define MTF_ID_SSET "SSET" /* Start of Backup Set Description Block ID */
#define MTF_ID_ESET "ESET" /* End of Backup Set Description Block ID */
#define MTF_ID_EOTM "EOTM" /* End of tape, continuation Block ID */
#define MTF_ID_DIRB "DIRB" /* Directory Descriptor Block ID */
#define MTF_ID_FILE "FILE" /* File Descriptor Block ID */
#define MTF_ID_CFIL "CFIL" /* Corrupt File Descriptor Block ID */
#define MTF_ID_ESPB "ESPB" /* End of Set Pad Block */
#define MTF_ID_SFMB "SFMB" /* Soft Filemark Descriptor Block ID */
/* ==================================================================================
DBLK Block Attributes
The lower 16 bits are reserved for general attribute bits (those which may appear in more than one type of DBLK), the upper 16 are for attributes which are specific to one type of DBLK.
Note that the block specific bit definitions overlap, and the block type is used to determine the meaning of a given bit.================================================================================== */
/* any : */#define MTF_CONTINUATION 0x00000001UL
#define MTF_COMPRESSION 0x00000004UL
#define MTF_EOS_AT_EOM 0x00000008UL
#define MTF_VAR_BLKS 0x00000010UL
#define MTF_SESSION 0x00000020UL
/* TAPE : */#define MTF_SM_EXISTS 0x00010000UL
#define MTF_FDD_ALLOWED 0x00020000UL
#define MTF_SM_ALT_OVERWRITE 0x00040000UL
#define MTF_FDD_ALT_PART 0x00080000UL
#define MTF_SM_ALT_APPEND 0x00200000UL
/* SSET : */#define MTF_FDD_EXISTS 0x00010000UL
#define MTF_ENCRYPTION 0x00020000UL
/* ESET : */#define MTF_FDD_ABORTED 0x00010000UL
#define MTF_END_OF_FAMILY 0x00020000UL
#define MTF_ABORTED_SET 0x00040000UL
#define MTF_SET_VERIFIED 0x00080000UL
/* EOTM : */#define MTF_NO_ESET_PBA 0x00010000UL
#define MTF_INVALID_ESET_PBA 0x00020000UL
/* ==================================================================================
TAPE Block Attributes================================================================================== */
#define MTF_TAPE_SOFT_FILEMARK 0x00000001UL
#define MTF_TAPE_MEDIA_LABEL 0x00000002UL
/* ==================================================================================
SSET Block Attributes================================================================================== */
#define MTF_SSET_TRANSFER 0x00000001UL
#define MTF_SSET_COPY 0x00000002UL
#define MTF_SSET_NORMAL 0x00000004UL
#define MTF_SSET_DIFFERENTIAL 0x00000008UL
#define MTF_SSET_INCREMENTAL 0x00000010UL
#define MTF_SSET_DAILY 0x00000020UL
/* ==================================================================================
VOLB Block Attributes================================================================================== */
#define MTF_VOLB_NO_REDIRECT 0x00000001UL
#define MTF_VOLB_NON_VOLUME 0x00000002UL
#define MTF_VOLB_DEV_DRIVE 0x00000004UL
#define MTF_VOLB_DEV_UNC 0x00000008UL
#define MTF_VOLB_DEV_OS_SPEC 0x00000010UL
#define MTF_VOLB_DEV_VEND_SPEC 0x00000020UL
/* ==================================================================================
DIRB Block Attributes================================================================================== */
#define MTF_DIRB_READ_ONLY 0x00000100UL
#define MTF_DIRB_HIDDEN 0x00000200UL
#define MTF_DIRB_SYSTEM 0x00000400UL
#define MTF_DIRB_MODIFIED 0x00000800UL
#define MTF_DIRB_EMPTY 0x00010000UL
#define MTF_DIRB_PATH_IN_STREAM 0x00020000UL
#define MTF_DIRB_CORRUPT 0x00040000UL
/* ==================================================================================
FILE Block Attributes================================================================================== */
#define MTF_FILE_READ_ONLY 0x00000100UL
#define MTF_FILE_HIDDEN 0x00000200UL
#define MTF_FILE_SYSTEM 0x00000400UL
#define MTF_FILE_MODIFIED 0x00000800UL
#define MTF_FILE_IN_USE 0x00010000UL
#define MTF_FILE_NAME_IN_STREAM 0x00020000UL
#define MTF_FILE_CORRUPT 0x00040000UL
/* ==================================================================================
CFIL Block Attributes================================================================================== */
#define MTF_CFIL_LENGTH_CHANGE 0x00010000UL
#define MTF_CFIL_UNREADABLE_BLK 0x00020000UL
#define MTF_CFIL_DEADLOCK 0x00040000UL
/* ==================================================================================
ESET Block Attributes================================================================================== */
#define MTF_ESET_TRANSFER 0x00000001UL
#define MTF_ESET_COPY 0x00000002UL
#define MTF_ESET_NORMAL 0x00000004UL
#define MTF_ESET_DIFFERENTIAL 0x00000008UL
#define MTF_ESET_INCREMENTAL 0x00000010UL
#define MTF_ESET_DAILY 0x00000020UL
/* ==================================================================================
STREAM File System Attributes================================================================================== */
#define MTF_STREAM_MODIFIED_BY_READ 0x00000001UL
#define MTF_STREAM_CONTAINS_SECURITY 0x00000002UL
#define MTF_STREAM_IS_NON_PORTABLE 0x00000004UL
#define MTF_STREAM_IS_SPARSE 0x00000008UL
/* ==================================================================================
STREAM Media Format Attributes================================================================================== */
#define MTF_STREAM_CONTINUE 0x00000001UL
#define MTF_STREAM_VARIABLE 0x00000002UL
#define MTF_STREAM_VAR_END 0x00000004UL
#define MTF_STREAM_ENCRYPTED 0x00000008UL
#define MTF_STREAM_COMPRESSED 0x00000010UL
#define MTF_STREAM_CHECKSUMED 0x00000020UL
#define MTF_STREAM_EMBEDDED_LENGTH 0x00000040UL
/* ==================================================================================
STREAM Types (Platform Independent)================================================================================== */
#define MTF_STANDARD_DATA_STREAM "STAN"
#define MTF_PATH_NAME_STREAM "PNAM"
#define MTF_FILE_NAME_STREAM "FNAM"
#define MTF_CHECKSUM_STREAM "CSUM"
#define MTF_CORRUPT_STREAM "CRPT"
#define MTF_PAD_STREAM "SPAD"
#define MTF_SPARSE_STREAM "SPAR"
#define MTF_MBC_LMO_SET_MAP_STREAM "TSMP"
#define MTF_MBC_LMO_FDD_STREAM "TFDD"
#define MTF_MBC_SLO_SET_MAP_STREAM "MAP2"
#define MTF_MBC_SLO_FDD_STREAM "FDD2"
/* ==================================================================================
STREAM Types (Windows NT specific)================================================================================== */
#define MTF_NTFS_ALT_STREAM "ADAT"
#define MTF_NTFS_EA_STREAM "NTEA"
#define MTF_NT_SECURITY_STREAM "NACL"
#define MTF_NT_ENCRYPTED_STREAM "NTED"
#define MTF_NT_QUOTA_STREAM "NTQU"
#define MTF_NT_PROPERTY_STREAM "NTPR"
#define MTF_NT_REPARSE_STREAM "NTRP"
#define MTF_NT_OBJECT_ID_STREAM "NTOI"
/* ==================================================================================
STREAM Frame Headers================================================================================== */
#define MTF_COMPRESSION_HEADER_ID "FM"
#define MTF_ECRYPTION_HEADER_ID "EH"
/* ==================================================================================
* Turn on packing here. Need to be sure that date is packed. ================================================================================== */#pragma pack(1)
/***********************************************************************************
**************************************************************************************************************************************************************************** MTF Miscelaneous Data Types (and some handy methods for them)***********************************************************************************************************************************************************************************************************************************************************/
/* ==================================================================================
General Data Types================================================================================== */#ifndef _BASET32_H_
#ifndef _BASETSD_H_
// This one is now in a NT header file but not as __int32
typedef unsigned __int8 UINT8;typedef unsigned __int16 UINT16;typedef unsigned __int32 UINT32;#endif
#endif
typedef unsigned __int64 UINT64;
/* ==================================================================================
Compressed date structure for storing dates in minimal space on tape:
BYTE 0 BYTE 1 BYTE 2 BYTE 3 BYTE 4 76543210 76543210 76543210 76543210 76543210 yyyyyyyy yyyyyymm mmdddddh hhhhmmmm mmssssss================================================================================== */typedef struct { UINT8 dt_field[5] ;} MTF_DATE_TIME;
/************************************************************************************
* MTF_CreateDataTime#####()** Description: Given various arguments, this set of functions returns a packed * MTF_DATE_TIME struct which can then be assigned to fields found * in the various info structs found below* Example:* sSetInfo.sBackupDate = MTF_CreateDateTime(1995, 6, 12, 16, 30, 0);************************************************************************************/
/***********************************************************************************
**************************************************************************************** MTF Alignment Factor - GENERIC DETAIL COMMENTS FOR METHODS FOUND BELOW***********************************************************************************************************************************************************************/
/************************************************************************************
* MTF_SetAlignmentFactor()** Description: Sets the alignment factor to be used by the MTF API* (particularly by MTF_PadToNextAlignmentFactor and MTF_WriteTAPEDblk)** Pre:* Post: MTF API Alignment Factor == uAF** uAF -- alignment factor value to set************************************************************************************/
/************************************************************************************
* MTF_GetAlignmentFactor()** Description: Returns the Alignment Factor set by MTF_SetAlignmentFactor** Pre: MTF_SetAlignmentFactor has been called************************************************************************************/
/************************************************************************************
* MTF_PadToNextAlignmentFactor()** Description: Appends an SPAD stream to the buffer so as to pad the buffer out to * the next alignment factor* ** Pre: The alignment factor has been set by calling MTF_SetAlignmentFactor,* pBuffer points to a buffer whose size is reflected by nBufferSize** Post: return value == MTF_ERROR_NONE* => padding was successful, *pnSizeUsed reflects amount of buffer used,* AND *pnSizeUsed % MTF_GetAlignmentFactor == 0 is TRUE* return value == MTF_ERROR_BUFFER_TOO_SMALL* => The buffer was too small, *pnSizeUsed reflects the amound needed** NOTE: If the space between the end of the buffer and the next alignment factor is * smaller than the size of a stream header, then the spad hogs up the whole * next alignment factor.** pBuffer -- the buffer to spad out* nBufUsed -- the amount of the buffer used so far (position where to append)* nBufferSize -- the size of the buffer pointed to by pBuffer* pnSizeUsed -- points to where to store size used or needed************************************************************************************/
/************************************************************************************
* MTF_PadToNextPhysicalBlockBoundary() - (bmd)** Description: Appends an SPAD stream to the buffer so as to pad the buffer out to * the next physical block boundary.*************************************************************************************/
/***********************************************************************************
**************************************************************************************************************************************************************************** MTF API STRUCTURES***********************************************************************************************************************************************************************************************************************************************************/
/***********************************************************************************
GENERIC DETAIL COMMENTS FOR METHODS FOUND BELOW=================================================
************************************************************************************* MTF_Set####Defaults()** Description: Sets up default values for the structure. Always call this to* avoid garbage values in case you over look a field, * Pre: * Post: All fields of the referenced structure are filled in with *something*. * Date fields are initialized to current date and time.* Strings pointers are set to 0* Most other values set to 0** p####Info -- pointer to structure to be set************************************************************************************void MTF_Set####Defaults( MTF_####_INFO *p####Info);
************************************************************************************* MTF_Write####Dblk()** Description: Formats the information supplied in psHdrInfo and ps####Info into* MTF Format and places the results in pBuffer** Pre: psHdrInfo and ps####Info contain valid information / default values* pBuffer points to a buffer where resulting format is to be stored* nBuffer size indicates the size of the buffer** MTF_WriteTAPEDblk -- MTF_SetAlingmentFactor has been called** Post: return value == MTF_ERROR_NONE* => Format was successful, *pnSizeUsed reflects amount of buffer used* return value == MTF_ERROR_BUFFER_TOO_SMALL* => The buffer was too small, *pnSizeUsed reflects the amound needed** psHdrInfo -- MTF Common header information * ps####Info -- MTF DBLK info* pBuffer -- pointer to buffer which will receive MTF formatted info* pBufferSize -- the size of the buffer pointed to by pBuffer* pnSizeUsed -- pointer to a size_t in which amount of buffer used or needed is stored************************************************************************************DWORD MTF_Write####Dblk( MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_####_INFO *ps####Info, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
************************************************************************************* MTF_Read####Dblk()** Description: Translates MTF Formatted information from a buffer to MTF API info* structures -- the opposite of MTF_Write####Dblk* ** Pre: pBuffer contains correct MTF Buffer information ** Post: psHdrInfo and ps####Info contain the de-formatted info. ** NOTE: Strings point to strings stored statically by the API, and will be over * written on the next read call. ** psHdrInfo -- MTF Common header info struct to receive info* ps####Info -- MTF DBLK info struct to receive info* pBuffer -- pointer to buffer which holds MTF formatted data************************************************************************************DWORD MTF_Read####Dblk( MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_####_INFO *ps####Info, BYTE *pBuffer);
************************************************************************************* MTF_Set####From?????????()** Description: Similar to MTF_Set####Defaults(), but takes as an argument one or more* commonly used structures and sets values from that. For example, * MTF_SetFILEFromFindData takes as an argument a WIN32_FIND_DATA struct* from which it extracts the file name, date, time, etc. * ** Pre: * Post: As many fields as are reasonable are automatically set. The rest of the * fields are set to default values.** NOTE: Strings such as file names, directory names are stored statically by the * MTF API and are only good until the next call to an MTF_Set#####From??????* function.** NOTE: FILE and DIRB calls automatically set the file and directory attibutes from * the info in the WIN32_FIND_DATA structure.** NOTE: MTF_SetSTREAMFromStreamId will automatically set the stream header id based* on the attributes found in the WIN32 stream header*************************************************************************************void MTF_Set####From?????????(MTF_DBLK_####_INFO *p####Info, SomeType???? Id??? ....);***********************************************************************************/
/* ==================================================================================
Common DBLK: MTF_STD_DBLK_INFO================================================================================== */typedef struct {
char acBlockType[5]; /* for reading only -- ignored when writing (includes \0)*/ UINT32 uBlockAttributes; UINT16 uOffsetToFirstStream; /* for reading only */ UINT8 uOSID; /* Machine/OS id where written, low byte */ UINT8 uOSVersion; /* Machine/OS id where written, high byte */ UINT64 uDisplayableSize; /* Displayable data size */ UINT64 uFormatLogicalAddress; UINT16 uReservedForMBC; /* Reserved for Media Based Catalog */ UINT16 uSoftwareCompression; /* Software Compression Algorithm */ UINT32 uControlBlockId; /* Used for error recovery */ void * pvOSData; /* OS specific Data */ UINT16 uOSDataSize; /* the size of the OS data in bytes */ UINT8 uStringType; /* String type */ UINT16 uHeaderCheckSum; /* for reading only */
} MTF_DBLK_HDR_INFO;
/* ==================================================================================
TAPE DBLK: MTF_TAPE_INFO================================================================================== */typedef struct {
UINT32 uTapeFamilyId; UINT32 uTapeAttributes; UINT16 uTapeSequenceNumber; UINT16 uPasswordEncryptionAlgorithm; UINT16 uSoftFilemarkBlockSize; UINT16 uTapeCatalogType; wchar_t * szTapeName; wchar_t * szTapeDescription; wchar_t * szTapePassword; wchar_t * szSoftwareName; UINT16 uAlignmentFactor; UINT16 uSoftwareVendorId; MTF_DATE_TIME sTapeDate; UINT8 uMTFMajorVersion;
} MTF_DBLK_TAPE_INFO;
/* ==================================================================================
Start of Set DBLK (SSET)================================================================================== */typedef struct { UINT32 uSSETAttributes; UINT16 uPasswordEncryptionAlgorithm; UINT16 uDataEncryptionAlgorithm; UINT16 uSoftwareVendorId; UINT16 uDataSetNumber; wchar_t * szDataSetName; wchar_t * szDataSetDescription; wchar_t * szDataSetPassword; wchar_t * szUserName; UINT64 uPhysicalBlockAddress; MTF_DATE_TIME sMediaWriteDate; UINT8 uSoftwareVerMjr; UINT8 uSoftwareVerMnr; UINT8 uTimeZone ; UINT8 uMTFMinorVer ; UINT8 uTapeCatalogVersion;} MTF_DBLK_SSET_INFO;
/* ==================================================================================
Volume DBLK (VOLB)================================================================================== */typedef struct { UINT32 uVolumeAttributes; wchar_t * szDeviceName; wchar_t * szVolumeName; wchar_t * szMachineName; MTF_DATE_TIME sMediaWriteDate;} MTF_DBLK_VOLB_INFO;
typedef struct { UINT32 uFileSystemFlags; UINT32 uBackupSetAttributes;} MTF_VOLB_OS_NT_1;
/* ==================================================================================
Directory DBLK (DIRB)================================================================================== */typedef struct { UINT32 uDirectoryAttributes; MTF_DATE_TIME sLastModificationDate; MTF_DATE_TIME sCreationDate; MTF_DATE_TIME sBackupDate; MTF_DATE_TIME sLastAccessDate; UINT32 uDirectoryId; wchar_t * szDirectoryName;} MTF_DBLK_DIRB_INFO;
typedef struct { UINT32 uDirectoryAttributes;} MTF_DIRB_OS_NT_0;
typedef struct { UINT32 uDirectoryAttributes; UINT16 uShortNameOffset; UINT16 uShortNameSize;} MTF_DIRB_OS_NT_1;
/* ==================================================================================
File DBLK (FILE)================================================================================== */typedef struct { UINT32 uFileAttributes; MTF_DATE_TIME sLastModificationDate; MTF_DATE_TIME sCreationDate; MTF_DATE_TIME sBackupDate; MTF_DATE_TIME sLastAccessDate; UINT32 uDirectoryId; UINT32 uFileId; wchar_t * szFileName; UINT64 uDisplaySize;} MTF_DBLK_FILE_INFO;
typedef struct { UINT32 uFileAttributes; UINT16 uShortNameOffset; UINT16 uShortNameSize; UINT16 lLink; UINT16 uReserved;} MTF_FILE_OS_NT_0;
typedef struct { UINT32 uFileAttributes; UINT16 uShortNameOffset; UINT16 uShortNameSize; UINT32 uFileFlags;} MTF_FILE_OS_NT_1;
/* ==================================================================================
Corrupt File DBLK (CFIL)================================================================================== */typedef struct { UINT32 uCFileAttributes; UINT32 uDirectoryId; /* Or CFIL Attributes ***/ UINT32 uFileId; /* Or reserved ***/ UINT64 uStreamOffset; UINT16 uCorruptStreamNumber;} MTF_DBLK_CFIL_INFO;
/* ==================================================================================
End of Set DBLK (ESET)================================================================================== */typedef struct { UINT32 uESETAttributes; UINT32 uNumberOfCorrupFiles; UINT64 uSetMapPBA; UINT64 uFileDetailPBA; UINT16 uFDDTapeSequenceNumber; UINT16 uDataSetNumber; MTF_DATE_TIME sMediaWriteDate;} MTF_DBLK_ESET_INFO;
/* ==================================================================================
End of Tape Media DBLK (EOTM)================================================================================== */typedef struct { UINT64 uLastESETPBA;} MTF_DBLK_EOTM_INFO;
/* ==================================================================================
Soft Filemark DBLK (SFMB) - (bmd)================================================================================== */typedef struct { UINT32 uNumberOfFilemarkEntries; UINT32 uFilemarkEntriesUsed; UINT32 uFilemarkArray[1];} MTF_DBLK_SFMB_INFO;
/* ==================================================================================
STREAM ================================================================================== */typedef struct { UINT8 acStreamId[4]; UINT16 uStreamFileSystemAttributes; UINT16 uStreamTapeFormatAttributes; UINT64 uStreamLength; UINT16 uDataEncryptionAlgorithm; UINT16 uDataCompressionAlgorithm; UINT16 uCheckSum;
} MTF_STREAM_INFO;
/* ==================================================================================
Tape Address================================================================================== */typedef struct { UINT16 uSize; /* Size of the data */ UINT16 uOffset; /* Offset to the data */} MTF_TAPE_ADDRESS;
#pragma pack()
//
// The CMTFApi class
//
class CMTFApi{public: // Construction
CMTFApi(); ~CMTFApi();
// General type utilties
static UINT64 MTF_CreateUINT64(UINT32 uLSB, UINT32 uMSB);
// MTF Date-Time utilities
MTF_DATE_TIME MTF_CreateDateTimeNull();
MTF_DATE_TIME MTF_CreateDateTime(int iYear, int iMonth, int iDay, int iHour, int iMinute, int iSecond);
MTF_DATE_TIME MTF_CreateDateTimeFromTM(struct tm *pT);
MTF_DATE_TIME MTF_CreateDateTimeFromFileTime(FILETIME sFileTime);
void MTF_CreateDateTimeToTM(MTF_DATE_TIME *pDT, struct tm *pT);
// MTF Alignment Factor
void MTF_SetAlignmentFactor(UINT16 uAF);
UINT16 MTF_GetAlignmentFactor();
DWORD MTF_PadToNextAlignmentFactor(BYTE *pBuffer, size_t nBufUsed, size_t nBufferSize, size_t *pnSizeUsed);
DWORD MTF_PadToNextPhysicalBlockBoundary(BYTE *pBuffer, size_t nBlockSize, size_t nBufUsed, size_t nBufferSize, size_t *pnSizeUsed); // Common DBLK
void MTF_SetDblkHdrDefaults(MTF_DBLK_HDR_INFO *pStdInfo);
// TAPE DBLK
void MTF_SetTAPEDefaults(MTF_DBLK_TAPE_INFO *pTapeInfo); DWORD MTF_WriteTAPEDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_TAPE_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
DWORD MTF_ReadTAPEDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_TAPE_INFO *psTapeInfo, BYTE *pBuffer);
// Start of Set DBLK (SSET)
void MTF_SetSSETDefaults(MTF_DBLK_SSET_INFO *pSSETInfo);
DWORD MTF_WriteSSETDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_SSET_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
DWORD MTF_ReadSSETDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_SSET_INFO *psTapeInfo, BYTE *pBuffer);
// Volume DBLK (VOLB)
void MTF_SetVOLBDefaults(MTF_DBLK_VOLB_INFO *pVOLBInfo);
void MTF_SetVOLBForDevice(MTF_DBLK_VOLB_INFO *pVOLBInfo, wchar_t *szDevice);
DWORD MTF_WriteVOLBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_VOLB_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
DWORD MTF_ReadVOLBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_VOLB_INFO *psTapeInfo, BYTE *pBuffer);
// Directory DBLK (DIRB)
void MTF_SetDIRBDefaults(MTF_DBLK_DIRB_INFO *pDIRBInfo);
void MTF_SetDIRBFromFindData(MTF_DBLK_DIRB_INFO *pDIRBInfo, wchar_t *szFullFileName, WIN32_FIND_DATAW *pFindData);
DWORD MTF_WriteDIRBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_DIRB_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadDIRBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_DIRB_INFO *psTapeInfo, BYTE *pBuffer);
// File DBLK (FILE)
void MTF_SetFILEDefaults(MTF_DBLK_FILE_INFO *pFILEInfo);
void MTF_SetFILEFromFindData(MTF_DBLK_FILE_INFO *pFILEInfo, WIN32_FIND_DATAW *pFindData);
DWORD MTF_WriteFILEDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_FILE_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadFILEDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_FILE_INFO *psTapeInfo, BYTE *pBuffer);
// Corrupt File DBLK (CFIL)
void MTF_SetCFILDefaults(MTF_DBLK_CFIL_INFO *pCFILInfo);
DWORD MTF_WriteCFILDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_CFIL_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadCFILDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_CFIL_INFO *psTapeInfo, BYTE *pBuffer);
// End of Set Pad DBLK (ESPB)
DWORD MTF_WriteESPBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadESPBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, BYTE *pBuffer);
// End of Set DBLK (ESET)
void MTF_SetESETDefaults(MTF_DBLK_ESET_INFO *pESETInfo);
DWORD MTF_WriteESETDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_ESET_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadESETDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_ESET_INFO *psTapeInfo, BYTE *pBuffer);
// End of Tape Media DBLK (EOTM)
void MTF_SetEOTMDefaults(MTF_DBLK_EOTM_INFO *pEOTMInfo);
DWORD MTF_WriteEOTMDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_EOTM_INFO *psTapeInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed); DWORD MTF_ReadEOTMDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_EOTM_INFO *psTapeInfo, BYTE *pBuffer);
// Soft Filemark DBLK (SFMB) - (bmd)
size_t MTF_GetMaxSoftFilemarkEntries(size_t nBlockSize);
void MTF_InsertSoftFilemark(MTF_DBLK_SFMB_INFO *psSoftInfo, UINT32 pba);
DWORD MTF_WriteSFMBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_SFMB_INFO *psSoftInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
DWORD MTF_ReadSFMBDblk(MTF_DBLK_HDR_INFO *psHdrInfo, MTF_DBLK_SFMB_INFO *psSoftInfo, BYTE *pBuffer);
// STREAM
static void MTF_SetSTREAMDefaults(MTF_STREAM_INFO *pSTREAMInfo, char *szId);
static void MTF_SetSTREAMFromStreamId(MTF_STREAM_INFO *pSTREAMInfo, WIN32_STREAM_ID *pStreamId, size_t nIDHeaderSize);
static void MTF_SetStreamIdFromSTREAM(WIN32_STREAM_ID *pStreamId, MTF_STREAM_INFO *pSTREAMInfo, size_t nIDHeaderSize);
static DWORD MTF_WriteStreamHeader(MTF_STREAM_INFO *psStreamInfo, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
static DWORD MTF_WriteNameStream(char *szType, wchar_t *szName, BYTE *pBuffer, size_t nBufferSize, size_t *pnSizeUsed);
static DWORD MTF_ReadStreamHeader(MTF_STREAM_INFO *psStreamInfo, BYTE *pBuffer);
// Utilities
void MTF_DBLK_HDR_INFO_ReadFromBuffer(MTF_DBLK_HDR_INFO *psHdrInfo, BYTE *pBuffer);private: // Internal methods
static size_t Align(size_t uSize, size_t uAlignment); static UINT16 CalcChecksum(BYTE * pStartPtr, int nNum); static UINT32 CalcChecksumOfStreamData(BYTE * pStartPtr, int nNum);
static size_t wstrsize(wchar_t *s); static size_t ua_wstrsize(wchar_t UNALIGNED *s); void ClearStrings(); wchar_t * MakeString(wchar_t UNALIGNED * pString, size_t iSize);
size_t StringToTapeAddress(MTF_TAPE_ADDRESS *pAd, BYTE *pBuffer, wchar_t *str, size_t uCurrentStorageOffset);
void MTF_WriteDblkHdrToBuffer(UINT8 acID[4], UINT16 uOffsetToFirstStream, MTF_DBLK_HDR_INFO *psHdrInfo, BYTE *pBuffer, size_t *puCurrentStorage); size_t MTF_DBLK_HDR_INFO_CalcAddDataSize(MTF_DBLK_HDR_INFO *pSTDInfo); size_t MTF_DBLK_TAPE_INFO_CalcAddDataSize(MTF_DBLK_TAPE_INFO *pTapeInfo); size_t MTF_DBLK_SSET_INFO_CalcAddDataSize(MTF_DBLK_SSET_INFO *pSSETInfo); size_t MTF_DBLK_VOLB_INFO_CalcAddDataSize(MTF_DBLK_VOLB_INFO *pVOLBInfo); size_t MTF_DBLK_DIRB_INFO_CalcAddDataSize(MTF_DBLK_DIRB_INFO *pDIRBInfo); size_t MTF_DBLK_FILE_INFO_CalcAddDataSize(MTF_DBLK_FILE_INFO *pFILEInfo);
MTF_DATE_TIME MTF_CreateDateNull(void);
#define MTF_STRLEN 256
#define iNUMSTRINGS 5
// Data members
UINT16 m_uAlignmentFactor; // Alignment factor
// When the api formats it's own strings (i.e. file names from the WIN32_FIND_DATA,
// we need to keep those strings somewhere so we can set the pointers to them in
// the info structs.
wchar_t m_szDeviceName[MTF_STRLEN]; wchar_t m_szVolumeName[MTF_STRLEN]; wchar_t m_szMachineName[MAX_COMPUTERNAME_LENGTH+1]; wchar_t m_szDirectoryName[MTF_STRLEN]; wchar_t m_szFileName[MTF_STRLEN];
// Internal string management
wchar_t *m_aszStrings[iNUMSTRINGS]; // we keep an array of pointers to allocated strings
// this managed by ClearStrings() and MakeString()
int m_iNumStrings; // the number of strings currently allocated
};
#endif // of _MTFAPI_H_
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