286 lines
7.7 KiB
C
286 lines
7.7 KiB
C
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//
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// FAT/FAT32 boot sectors.
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//
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#pragma pack(1)
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/*
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typedef struct _PACKED_BPB_EX {
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UCHAR BytesPerSector[2]; // offset = 0x000 0
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UCHAR SectorsPerCluster[1]; // offset = 0x002 2
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UCHAR ReservedSectors[2]; // offset = 0x003 3
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UCHAR Fats[1]; // offset = 0x005 5
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UCHAR RootEntries[2]; // offset = 0x006 6
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UCHAR Sectors[2]; // offset = 0x008 8
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UCHAR Media[1]; // offset = 0x00A 10
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UCHAR SectorsPerFat[2]; // offset = 0x00B 11
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UCHAR SectorsPerTrack[2]; // offset = 0x00D 13
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UCHAR Heads[2]; // offset = 0x00F 15
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UCHAR HiddenSectors[4]; // offset = 0x011 17
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UCHAR LargeSectors[4]; // offset = 0x015 21
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UCHAR LargeSectorsPerFat[4]; // offset = 0x019 25
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UCHAR ExtendedFlags[2]; // offset = 0x01D 29
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UCHAR FsVersion[2]; // offset = 0x01F 31
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UCHAR RootDirFirstCluster[4]; // offset = 0x021 33
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UCHAR FsInfoSector[2]; // offset = 0x025 37
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UCHAR BackupBootSector[2]; // offset = 0x027 39
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UCHAR Reserved[12]; // offset = 0x029 41
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} PACKED_BPB_EX; // sizeof = 0x035 53
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*/
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typedef struct _PACKED_BPB_EX {
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USHORT BytesPerSector; // offset = 0x000 0
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UCHAR SectorsPerCluster; // offset = 0x002 2
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USHORT ReservedSectors; // offset = 0x003 3
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UCHAR Fats; // offset = 0x005 5
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USHORT RootEntries; // offset = 0x006 6
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USHORT Sectors; // offset = 0x008 8
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UCHAR Media; // offset = 0x00A 10
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USHORT SectorsPerFat; // offset = 0x00B 11
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USHORT SectorsPerTrack; // offset = 0x00D 13
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USHORT Heads; // offset = 0x00F 15
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ULONG HiddenSectors; // offset = 0x011 17
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ULONG LargeSectors; // offset = 0x015 21
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ULONG LargeSectorsPerFat; // offset = 0x019 25
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USHORT ExtendedFlags; // offset = 0x01D 29
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USHORT FsVersion; // offset = 0x01F 31
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ULONG RootDirFirstCluster; // offset = 0x021 33
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USHORT FsInfoSector; // offset = 0x025 37
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USHORT BackupBootSector; // offset = 0x027 39
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UCHAR Reserved[12]; // offset = 0x029 41
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} PACKED_BPB_EX; // sizeof = 0x035 53
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typedef PACKED_BPB_EX _far *FPPACKED_BPB_EX;
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typedef struct _PACKED_BOOT_SECTOR_EX {
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UCHAR Jump[3]; // offset = 0x000 0
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UCHAR Oem[8]; // offset = 0x003 3
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PACKED_BPB_EX PackedBpb; // offset = 0x00B 11
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UCHAR PhysicalDriveNumber; // offset = 0x040 64
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UCHAR CurrentHead; // offset = 0x041 65
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UCHAR Signature; // offset = 0x042 66
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UCHAR Id[4]; // offset = 0x043 67
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UCHAR VolumeLabel[11]; // offset = 0x047 71
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UCHAR SystemId[8]; // offset = 0x058 88
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} FAT32_BOOT_SECTOR; // sizeof = 0x060 96
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typedef FAT32_BOOT_SECTOR _far *FPFAT32_BOOT_SECTOR;
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//
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// Define the FAT32 FsInfo sector.
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//
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typedef struct _FSINFO_SECTOR {
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ULONG SectorBeginSignature; // offset = 0x000 0
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UCHAR ExtraBootCode[480]; // offset = 0x004 4
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ULONG FsInfoSignature; // offset = 0x1e4 484
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ULONG FreeClusterCount; // offset = 0x1e8 488
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ULONG NextFreeCluster; // offset = 0x1ec 492
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UCHAR Reserved[12]; // offset = 0x1f0 496
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ULONG SectorEndSignature; // offset = 0x1fc 508
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} FSINFO_SECTOR, _far *FPFSINFO_SECTOR;
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#define FSINFO_SECTOR_BEGIN_SIGNATURE 0x41615252
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#define FSINFO_SECTOR_END_SIGNATURE 0xAA550000
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#define FSINFO_SIGNATURE 0x61417272
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#pragma pack()
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BOOL
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_far
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IsFat32(
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VOID *buf
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);
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typedef
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BOOL
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(*PDISKSEL_VALIDATION_ROUTINE) (
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IN USHORT DiskId
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);
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INT
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_far
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SelectDisk(
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IN UINT DiskCount,
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IN FPCHAR Prompt,
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IN PDISKSEL_VALIDATION_ROUTINE Validate, OPTIONAL
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OUT char *AlternateResponse, OPTIONAL
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IN FPCHAR textDisk,
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IN FPCHAR textPaddedMbCount,
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IN FPCHAR textInvalidSelection,
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IN FPCHAR textMasterDisk
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);
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INT
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_far
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SelectPartition(
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IN UINT PartitionCount,
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IN CHAR *Prompt,
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OUT CHAR *AlternateResponse, OPTIONAL
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IN FPCHAR textDisk,
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IN FPCHAR textPaddedMbCount,
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IN FPCHAR textInvalidSelection
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);
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BOOL
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_far
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ConfirmOperation(
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IN FPCHAR ConfirmationText,
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IN char textYesChar,
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IN char textNoChar
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);
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BOOL
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_far
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AllocTrackBuffer(
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IN BYTE SectorsPerTrack,
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OUT FPVOID _far *AlignedBuffer,
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OUT FPVOID _far *Buffer
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);
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VOID
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_far
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FlushDisks(
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VOID
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);
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ULONG
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_far
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DosSeek(
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IN unsigned Handle,
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IN ULONG Offset,
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IN BYTE Origin
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);
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#define DOSSEEK_START 0
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#define DOSSEEK_CURRENT 1
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#define DOSSEEK_END 2
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//** Must use this as initial value for CRC
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#define CRC32_INITIAL_VALUE 0L
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/*** CRC32Compute - Compute 32-bit
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*
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* Entry:
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* pb - Pointer to buffer to computer CRC on
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* cb - Count of bytes in buffer to CRC
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* crc32 - Result from previous CRC32Compute call (on first call
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* to CRC32Compute, must be CRC32_INITIAL_VALUE!!!!).
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*
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* Exit:
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* Returns updated CRC value.
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*/
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ULONG
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_far
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CRC32Compute(
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IN FPBYTE pb,
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IN ULONG cb,
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IN ULONG crc32
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);
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VOID
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_far
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RebootSystem(
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VOID
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);
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unsigned
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_far
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GetGlobalCodepage(
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VOID
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);
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BOOL
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_far
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SetGlobalCodepage(
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IN unsigned Codepage
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);
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unsigned
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_far
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GetScreenCodepage(
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VOID
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);
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BOOL
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_far
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SetScreenCodepage(
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IN unsigned Codepage
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);
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typedef struct _CMD_LINE_ARGS {
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UINT LanguageCount;
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BOOL Test;
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BOOL Quiet;
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BOOL Reinit;
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BOOL DebugLog;
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BYTE MasterDiskInt13Unit;
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char _far *FileListFile;
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char _far *ImageFile;
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} CMD_LINE_ARGS, _far *FPCMD_LINE_ARGS;
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BOOL
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ParseArgs(
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IN int argc,
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IN FPCHAR argv[],
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IN BOOL Strict,
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IN FPCHAR AllowedSwitchChars,
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OUT FPCMD_LINE_ARGS CmdLineArgs
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);
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//
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// Compression stuff
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//
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typedef enum {
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CompressNone,
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CompressMrci1,
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CompressMrci2,
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CompressMax
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} CompressionType;
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BOOL
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CompressAndSave(
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IN CompressionType Type,
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IN FPBYTE Data,
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IN unsigned DataSize,
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OUT FPBYTE CompressScratchBuffer,
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IN unsigned BufferSize,
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IN UINT FileHandle
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);
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//
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// Logging stuff
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//
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VOID
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_LogStart(
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IN char *FileName
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);
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VOID
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_LogEnd(
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VOID
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);
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VOID
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_Log(
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IN char *FormatString,
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...
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);
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VOID
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_LogSetFlags(
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IN unsigned Flags
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);
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//
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// If this flag is set the log file will be closed
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// and reopened after every call to _Log(). Useful
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// if a reboot is expected to occur.
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//
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#define LOGFLAG_CLOSE_REOPEN 0x0001
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