399 lines
14 KiB
C
399 lines
14 KiB
C
#include "drive.h"
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#include "./files.h"
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BOOL c_drive_DeviceIoControl(void* file, DWORD dwIoControlCode, LPVOID lpInBuffer,
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DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize,
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LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped) {
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log_trace("C", "DeviceIOControl %08x", dwIoControlCode);
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memset(lpOutBuffer, 0, nInBufferSize);
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switch (dwIoControlCode) {
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case IOCTL_STORAGE_GET_DEVICE_NUMBER:
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((STORAGE_DEVICE_NUMBER*)lpOutBuffer)->DeviceType = FILE_DEVICE_DISK;
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((STORAGE_DEVICE_NUMBER*)lpOutBuffer)->DeviceNumber = 0;
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return TRUE;
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case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS:
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((VOLUME_DISK_EXTENTS*)lpOutBuffer)->NumberOfDiskExtents = 1;
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((VOLUME_DISK_EXTENTS*)lpOutBuffer)->Extents[0].StartingOffset.QuadPart = 0;
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DWORD a = (sizeof(*((VOLUME_DISK_EXTENTS*)lpOutBuffer)));
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return TRUE;
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default:
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return FALSE;
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}
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}
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LARGE_INTEGER pd0_file_pointer;
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BOOL pd0_SetFilePointerEx(void* file, LARGE_INTEGER liDistanceToMove,
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PLARGE_INTEGER lpNewFilePointer, DWORD dwMoveMethod) {
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log_trace("pd0", "Seek 0x%08x", liDistanceToMove.QuadPart);
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if (dwMoveMethod == FILE_BEGIN)
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pd0_file_pointer = liDistanceToMove;
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else
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pd0_file_pointer.QuadPart += liDistanceToMove.QuadPart;
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if (lpNewFilePointer) lpNewFilePointer->QuadPart = pd0_file_pointer.QuadPart;
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return TRUE;
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}
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DWORD pd0_SetFilePointer(void* file, LONG liDistanceToMove, PLONG lpDistanceToMoveHigh,
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DWORD dwMoveMethod) {
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if (lpDistanceToMoveHigh && *lpDistanceToMoveHigh)
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log_trace("pd0", "Seek 0x%x%08x", *lpDistanceToMoveHigh, liDistanceToMove);
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else
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log_trace("pd0", "Seek 0x%08x", liDistanceToMove);
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if (dwMoveMethod == FILE_BEGIN) {
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if (lpDistanceToMoveHigh)
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pd0_file_pointer.HighPart = *lpDistanceToMoveHigh;
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else
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pd0_file_pointer.HighPart = 0;
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pd0_file_pointer.LowPart = liDistanceToMove;
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} else {
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pd0_file_pointer.QuadPart += liDistanceToMove;
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if (lpDistanceToMoveHigh) pd0_file_pointer.HighPart += *lpDistanceToMoveHigh;
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}
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return pd0_file_pointer.LowPart;
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}
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void write_chs(BYTE* chs, WORD cylinder, BYTE head, BYTE sector) {
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chs[0] = head;
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chs[1] = sector | ((cylinder >> 8) << 6);
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chs[2] = cylinder & 0xff;
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}
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#pragma pack(1)
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typedef struct spd {
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uint32_t crc;
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uint8_t version;
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uint8_t _[11];
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#pragma pack(1)
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struct {
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/*
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(BCD)
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1.0 = original0
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1.1 = original1
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2.0 = patch0
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2.1 = patch1
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3.0 = os
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4.0 = app_data
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*/
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spd_slot_t slot_content;
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/*
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Guess: Filesystem type
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0: Encrypted FAT16
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1: Decrypted NTFS
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*/
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uint8_t uk1;
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uint16_t block_size;
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uint32_t block_count;
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uint8_t __[8];
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} slots[31];
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} spd_t;
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#pragma pack(1)
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typedef struct {
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uint16_t year;
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uint8_t mon;
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uint8_t day;
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uint8_t hour;
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uint8_t min;
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uint8_t sec;
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uint8_t _;
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} slot_time_t;
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#pragma pack(1)
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typedef struct {
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char id[4];
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slot_time_t time;
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uint32_t version;
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uint32_t _[2];
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uint32_t segcount;
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uint32_t segsize;
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char hw[3];
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uint8_t instant;
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slot_time_t orgtime;
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uint32_t orgversion;
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uint32_t osver;
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uint32_t ossegcount;
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uint8_t __[8];
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} sbr_slot_t;
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#pragma pack(1)
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enum {
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Slot_Check = 0x00, // status=error
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Slot_Install = 0x01, // status=install -> FAILED TO READ PREMADE BLOCK!!
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Slot_Complete = 0x02, // status=complete
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Slot_Empty = 0x03, // status=error
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Slot_Error = 0x04, // status=error
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Slot_Invalid = 0xff,
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};
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typedef uint8_t slot_status_t;
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#pragma pack(1)
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typedef struct {
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uint32_t crc;
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uint8_t version;
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uint8_t _[11 + 16 + 32];
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uint8_t bootslot;
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uint8_t __[2];
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slot_status_t slot_status[5];
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uint8_t ___[8 + 16 + 32 + 64];
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sbr_slot_t slot_os;
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sbr_slot_t slot_original0;
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sbr_slot_t slot_appdata;
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sbr_slot_t slot_patch0;
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sbr_slot_t slot_patch1;
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} sbr_t;
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sbr_t SegaBootRecord = {
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.version = SBR_VERSION,
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.bootslot = 0x02,
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.slot_status = { Slot_Complete, Slot_Complete, Slot_Invalid, Slot_Check, Slot_Complete },
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.slot_os = {
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// Starts at 0xc5469400
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// i.e. [partition 6] - (segcount * segsize)
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// i.e. partition 5 = [dead space] [slot_os]
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.id = {'A', 'A', 'S', '0'},
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.time = { 0 },
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.version = 0x450a01,
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.segcount = 1745,
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.segsize = 0x40000,
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.hw = { 'A', 'A', 'S' },
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.instant = 0,
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.osver = 0x450a01,
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.ossegcount = 0,
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.orgtime = { 0 },
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.orgversion = 0x450a01,
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},
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.slot_original0 = {
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// Starts at 0xb065bae00
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// i.e. [end of disk] - (segcount * segsize)
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// i.e. partition 9 = [dead space] [slot_original0]
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.id = {'S', 'D', 'E', 'Y'},
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.time = { 2018, 10, 29, 15, 7, 36 },
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.version = 0x10061,
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.segcount = 65082,
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.segsize = 0x40000,
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.hw = { 'A', 'A', 'S' },
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.instant = 0,
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.osver = 0x450a01,
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.ossegcount = 1745,
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.orgtime = { 2018, 10, 29, 15, 7, 36 },
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.orgversion = 0x10061,
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},
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.slot_appdata = { 0 },
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.slot_patch0 = {
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// Starts at 0x15e49a000
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// i.e. [partition 7] - (segcount * segsize)
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// i.e. partition 6 = [dead space] [something] [patch0]
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.id = { 'S', 'D', 'D', 'Z' },
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.time = { 2018, 6, 21, 13, 46, 24 },
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.version = 0x10060,
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.segcount = 173,
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.segsize = 0x40000,
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.hw = { 'A', 'A', 'S' },
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.instant = 0,
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.osver = 0,
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.ossegcount = 0,
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.orgtime = { 2018, 5, 16, 20, 7, 12 },
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.orgversion = 0x01005f,
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},
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.slot_patch1 = {
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// Starts at 0x1debcac00
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// i.e. [partition 8] - (segcount * segsize)
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// i.e. partition 7 = [dead space] [something] [patch0]
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.id = { 'S', 'D', 'E', 'Y' },
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.time = { 2018, 11, 16, 19, 4, 48},
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.version = 0x10062,
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.segcount = 173,
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.segsize = 0x40000,
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.hw = { 'A', 'A', 'S' },
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.instant = 0,
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.osver = 0,
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.ossegcount = 0,
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.orgtime = { 2018, 10, 29, 15, 7, 36 },
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.orgversion = 0x10061,
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},
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};
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#define BOOT_PARITION_SIZE 0x300B85 // 1.5GB
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#define RECOVER_PARTITION_SIZE 0x300BC4 // 1.5GB
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typedef struct {
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uint32_t size;
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uint8_t type;
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spd_slot_t content;
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} partition_t;
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partition_t partitions[] = {
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{ 0x102d83, MBR_FS_FAT16, SPD_OS }, // 512MB OS update
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{ 0x403947, MBR_FS_FAT16, SPD_Patch0 }, // 2GB patch0
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{ 0x403947, MBR_FS_FAT16, SPD_Patch1 }, // 2GB patch1
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{ 0x48ed459, MBR_FS_NTFS, SPD_AppData }, // 40GB something
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{ 0x20014aa, MBR_FS_FAT16, SPD_Original0 }, // 16GB game
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};
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#define NUM_PARITIONS (sizeof partitions / sizeof partitions[0])
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#define MBR_LBA_GAP 0x3f // 1 track worth of sectors is claimed for the MBR
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#define BLOCKSIZE 512ll
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#define SPD_OFFSET ((extended_base * BLOCKSIZE) + sizeof(mbr_t))
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#define SBR0_OFFSET (SPD_OFFSET + sizeof (spd_t))
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#define SBR1_OFFSET (SBR0_OFFSET + sizeof SegaBootRecord)
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BOOL pd0_ReadFile(void* file, LPVOID lpBuffer, DWORD nNumberOfBytesToRead,
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LPDWORD lpNumberOfBytesRead, LPOVERLAPPED lpOverlapped) {
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log_info("pd0", "Read %d @ %llx", nNumberOfBytesToRead, pd0_file_pointer.QuadPart);
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uint32_t ext_offset = 0;
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uint32_t offsets[NUM_PARITIONS];
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uint32_t extended_base = MBR_LBA_GAP + BOOT_PARITION_SIZE + RECOVER_PARTITION_SIZE;
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for (int i = 0; i < NUM_PARITIONS; i++) {
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offsets[i] = ext_offset;
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ext_offset += partitions[i].size + MBR_LBA_GAP;
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}
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printf("%08x\n", offsets[0]);
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printf("%08x\n", extended_base);
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// MBR (C+Recover+Extend)
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if (pd0_file_pointer.QuadPart == 0) {
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mbr_t* mbr = (mbr_t*)lpBuffer;
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memset(mbr, 0, sizeof *mbr);
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mbr->sig[0] = 0x55;
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mbr->sig[1] = 0xAA;
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// 1.5GB C parition
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mbr->partitions[0].status = MBR_FLAG_BOOTABLE;
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mbr->partitions[0].type = MBR_FS_NTFS;
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mbr->partitions[0].lba = MBR_LBA_GAP;
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mbr->partitions[0].sectors = BOOT_PARITION_SIZE;
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// 1.5GB Recovery
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mbr->partitions[1].status = MBR_FLAG_NONE;
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mbr->partitions[1].type = MBR_FS_NTFS;
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mbr->partitions[1].lba = MBR_LBA_GAP + BOOT_PARITION_SIZE;
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mbr->partitions[1].sectors = RECOVER_PARTITION_SIZE;
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// Everything else is in an extended
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mbr->partitions[2].status = MBR_FLAG_NONE;
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mbr->partitions[2].type = MBR_FS_EXT_LBA;
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mbr->partitions[2].lba = MBR_LBA_GAP + BOOT_PARITION_SIZE + RECOVER_PARTITION_SIZE;
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mbr->partitions[2].sectors = ext_offset;
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*lpNumberOfBytesRead = sizeof *mbr;
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return TRUE;
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}
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// Extended partitions
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for (int i = 0; i < NUM_PARITIONS; i++) {
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if (pd0_file_pointer.QuadPart != ((extended_base + offsets[i]) * BLOCKSIZE)) continue;
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mbr_t* mbr = (mbr_t*)lpBuffer;
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memset(mbr, 0, sizeof *mbr);
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mbr->sig[0] = 0x55;
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mbr->sig[1] = 0xAA;
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mbr->partitions[0].status = MBR_FLAG_NONE;
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mbr->partitions[0].type = partitions[i].type;
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mbr->partitions[0].lba = MBR_LBA_GAP;
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mbr->partitions[0].sectors = partitions[i].size;
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if (i != NUM_PARITIONS - 1) {
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mbr->partitions[1].status = MBR_FLAG_NONE;
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mbr->partitions[1].type = MBR_FS_EXT_CHS;
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mbr->partitions[1].lba = offsets[i + 1];
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mbr->partitions[1].sectors = partitions[i + 1].size + MBR_LBA_GAP;
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}
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*lpNumberOfBytesRead = sizeof *mbr;
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return TRUE;
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}
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crc32_build_table();
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SegaBootRecord.crc = crc32(sizeof SegaBootRecord - 4, &SegaBootRecord.version, 0);
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// SEGA Partition Description
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if (pd0_file_pointer.QuadPart == SPD_OFFSET) {
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spd_t* spd = (spd_t*)lpBuffer;
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spd->version = SPD_VERSION;
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for (uint8_t i = 0; i < NUM_PARITIONS; i++) {
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spd->slots[i].block_size = BLOCKSIZE;
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spd->slots[i].block_count = partitions[i].size;
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spd->slots[i].slot_content = partitions[i].content;
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spd->slots[i].uk1 = partitions[i].type == MBR_FS_FAT16 ? 0 : 1;
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}
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spd->crc = crc32(sizeof *spd - 4, &(spd->version), 0);
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*lpNumberOfBytesRead = sizeof *spd;
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return TRUE;
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}
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// SEGA Boot Record 0 and 1. The two are a redundant copy of each other
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if (pd0_file_pointer.QuadPart == SBR0_OFFSET || pd0_file_pointer.QuadPart == SBR1_OFFSET) {
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memcpy(lpBuffer, &SegaBootRecord, sizeof SegaBootRecord);
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*lpNumberOfBytesRead = sizeof SegaBootRecord;
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return TRUE;
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}
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// Read within a partition
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if (pd0_file_pointer.QuadPart < MBR_LBA_GAP * BLOCKSIZE) {
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log_error("pd0", "Read performed within the first track of disk!");
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} else if (pd0_file_pointer.QuadPart < (MBR_LBA_GAP + BOOT_PARITION_SIZE) * BLOCKSIZE) {
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log_warning("pd0", "Game attempting to read windows partition!");
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} else if (pd0_file_pointer.QuadPart <
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(MBR_LBA_GAP + BOOT_PARITION_SIZE + RECOVER_PARTITION_SIZE) * BLOCKSIZE) {
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log_warning("pd0", "Game attempting to read recovery partition!");
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} else {
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for (int i = 0; i < NUM_PARITIONS; i++) {
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if (pd0_file_pointer.QuadPart <
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(offsets[i] + MBR_LBA_GAP + extended_base) * BLOCKSIZE) {
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log_error("pd0", "Read performed within the first track of partition %d!", i + 5);
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goto warned;
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} else if (pd0_file_pointer.QuadPart <
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(offsets[i] + MBR_LBA_GAP + partitions[i].size + extended_base) *
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BLOCKSIZE) {
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log_warning("pd0", "Read performed within partition %d", i + 5);
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goto warned;
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}
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}
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log_error("pd0", "Read to unmapped address: %llx (%d bytes)", pd0_file_pointer.QuadPart,
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nNumberOfBytesToRead);
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warned:;
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}
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return FALSE;
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}
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BOOL pd0_WriteFile(void* file, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite,
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LPDWORD lpNumberOfBytesWritten, LPOVERLAPPED lpOverlapped) {
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log_warning("pd0", "Write %d @ %llx", nNumberOfBytesToWrite, pd0_file_pointer.QuadPart);
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for (DWORD i = 0; i < nNumberOfBytesToWrite; i += 32) {
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for (int j = 0; j < 32; j++) {
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printf("%02x ", ((BYTE*)lpBuffer)[i + j]);
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}
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puts("");
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}
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*lpNumberOfBytesWritten = nNumberOfBytesToWrite;
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return TRUE;
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}
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void hook_drives() {
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file_hook_t* c_drive = new_file_hook(L"\\\\.\\C:");
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c_drive->DeviceIoControl = &c_drive_DeviceIoControl;
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hook_file(c_drive);
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file_hook_t* physical_drive_0 = new_file_hook(L"\\\\.\\PhysicalDrive0");
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// file_hook_t* physical_drive_0 = new_file_hook(L"\\\\.\\PhysicalDrive2063598201");
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// file_hook_t* physical_drive_0 = new_file_hook(L"\\\\.\\PhysicalDrive1811939950");
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physical_drive_0->SetFilePointerEx = pd0_SetFilePointerEx;
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physical_drive_0->SetFilePointer = pd0_SetFilePointer;
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physical_drive_0->ReadFile = pd0_ReadFile;
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physical_drive_0->WriteFile = pd0_WriteFile;
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hook_file(physical_drive_0);
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}
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