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Annotation of truecrypt/boot/windows/bootdiskio.h, revision 1.1.1.10

1.1       root        1: /*
1.1.1.10! root        2:  Copyright (c) 2008-2011 TrueCrypt Developers Association. All rights reserved.
1.1       root        3: 
1.1.1.9   root        4:  Governed by the TrueCrypt License 3.0 the full text of which is contained in
1.1.1.8   root        5:  the file License.txt included in TrueCrypt binary and source code distribution
                      6:  packages.
1.1       root        7: */
                      8: 
                      9: #ifndef TC_HEADER_Boot_BootDiskIo
                     10: #define TC_HEADER_Boot_BootDiskIo
                     11: 
                     12: #include "Bios.h"
1.1.1.2   root       13: #include "BootDebug.h"
                     14: #include "BootDefs.h"
                     15: 
1.1.1.10! root       16: #define TC_MAX_BIOS_DISK_IO_RETRIES 5
        !            17: 
1.1.1.2   root       18: enum
                     19: {
                     20:        BiosResultEccCorrected = 0x11
                     21: };
1.1       root       22: 
                     23: #pragma pack(1)
                     24: 
                     25: struct PartitionEntryMBR
                     26: {
                     27:        byte BootIndicator;
                     28: 
                     29:        byte StartHead;
                     30:        byte StartCylSector;
                     31:        byte StartCylinder;
                     32: 
                     33:        byte Type;
                     34: 
                     35:        byte EndHead;
                     36:        byte EndSector;
                     37:        byte EndCylinder;
                     38: 
                     39:        uint32 StartLBA;
                     40:        uint32 SectorCountLBA;
                     41: };
                     42: 
                     43: struct MBR
                     44: {
                     45:        byte Code[446];
                     46:        PartitionEntryMBR Partitions[4];
                     47:        uint16 Signature;
                     48: };
                     49: 
                     50: struct BiosLbaPacket
                     51: {
                     52:        byte Size;
                     53:        byte Reserved;
                     54:        uint16 SectorCount;
                     55:        uint32 Buffer;
                     56:        uint64 Sector;
                     57: };
                     58: 
                     59: #pragma pack()
                     60: 
                     61: 
                     62: struct ChsAddress
                     63: {
                     64:        uint16 Cylinder;
                     65:        byte Head;
                     66:        byte Sector;
                     67: };
                     68: 
                     69: struct Partition
                     70: {
                     71:        byte Number;
                     72:        byte Drive;
                     73:        bool Active;
                     74:        uint64 EndSector;
                     75:        bool Primary;
                     76:        uint64 SectorCount;
                     77:        uint64 StartSector;
                     78:        byte Type;
                     79: };
                     80: 
                     81: struct DriveGeometry
                     82: {
                     83:        uint16 Cylinders;
                     84:        byte Heads;
                     85:        byte Sectors;
                     86: };
                     87: 
                     88: 
1.1.1.2   root       89: #ifdef TC_BOOT_DEBUG_ENABLED
                     90: void AcquireSectorBuffer ();
                     91: void ReleaseSectorBuffer ();
                     92: #else
                     93: #      define AcquireSectorBuffer()
                     94: #      define ReleaseSectorBuffer()
                     95: #endif
                     96: 
1.1       root       97: void ChsToLba (const DriveGeometry &geometry, const ChsAddress &chs, uint64 &lba);
1.1.1.7   root       98: bool GetActivePartition (byte drive);
1.1       root       99: BiosResult GetDriveGeometry (byte drive, DriveGeometry &geometry, bool silent = false);
1.1.1.3   root      100: BiosResult GetDrivePartitions (byte drive, Partition *partitionArray, size_t partitionArrayCapacity, size_t &partitionCount, bool activeOnly = false, Partition *findPartitionFollowingThis = nullptr, bool silent = false);
1.1.1.5   root      101: bool IsLbaSupported (byte drive);
1.1       root      102: void LbaToChs (const DriveGeometry &geometry, const uint64 &lba, ChsAddress &chs);
                    103: void Print (const ChsAddress &chs);
                    104: void PrintDiskError (BiosResult error, bool write, byte drive, const uint64 *sector, const ChsAddress *chs = nullptr);
1.1.1.3   root      105: void PrintSectorCountInMB (const uint64 &sectorCount);
                    106: BiosResult ReadWriteMBR (bool write, byte drive, bool silent = false);
1.1.1.2   root      107: BiosResult ReadSectors (uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
1.1       root      108: BiosResult ReadSectors (byte *buffer, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
                    109: BiosResult ReadSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent = false);
                    110: BiosResult ReadWriteSectors (bool write, uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 &sector, uint16 sectorCount, bool silent);
                    111: BiosResult WriteSectors (byte *buffer, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
                    112: BiosResult WriteSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent = false);
                    113: 
1.1.1.2   root      114: extern byte SectorBuffer[TC_LB_SIZE];
                    115: 
1.1       root      116: #endif // TC_HEADER_Boot_BootDiskIo

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