disk.h File Reference

#include <reactos/rosioctl.h>
#include <pshpack1.h>
#include <poppack.h>

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Go to the source code of this file.

Classes
struct	_GEOMETRY
struct	_EXTENDED_GEOMETRY
struct	_PARTITION_TABLE_ENTRY
struct	_MASTER_BOOT_RECORD

Macros
#define	PARTITION_ENTRY_UNUSED   0x00
#define	PARTITION_FAT_12   0x01
#define	PARTITION_XENIX_1   0x02
#define	PARTITION_XENIX_2   0x03
#define	PARTITION_FAT_16   0x04
#define	PARTITION_EXTENDED   0x05
#define	PARTITION_HUGE   0x06
#define	PARTITION_IFS   0x07
#define	PARTITION_OS2BOOTMGR   0x0A
#define	PARTITION_FAT32   0x0B
#define	PARTITION_FAT32_XINT13   0x0C
#define	PARTITION_XINT13   0x0E
#define	PARTITION_XINT13_EXTENDED   0x0F
#define	PARTITION_NTFS   0x17
#define	PARTITION_PREP   0x41
#define	PARTITION_LDM   0x42
#define	PARTITION_UNIX   0x63
#define	VALID_NTFT   0xC0
#define	PARTITION_NTFT   0x80
#define	PARTITION_GPT   0xEE

Typedefs
typedef struct _GEOMETRY	GEOMETRY
typedef struct _GEOMETRY *	PGEOMETRY
typedef struct _EXTENDED_GEOMETRY	EXTENDED_GEOMETRY
typedef struct _EXTENDED_GEOMETRY *	PEXTENDED_GEOMETRY
typedef struct _PARTITION_TABLE_ENTRY	PARTITION_TABLE_ENTRY
typedef struct _PARTITION_TABLE_ENTRY *	PPARTITION_TABLE_ENTRY
typedef struct _MASTER_BOOT_RECORD	MASTER_BOOT_RECORD
typedef struct _MASTER_BOOT_RECORD *	PMASTER_BOOT_RECORD

Functions
VOID	DiskDetectPartitionType (IN UCHAR DriveNumber)
BOOLEAN	DiskGetBootPartitionEntry (IN UCHAR DriveNumber, OUT PPARTITION_TABLE_ENTRY PartitionTableEntry, OUT PULONG BootPartition)
BOOLEAN	DiskGetPartitionEntry (IN UCHAR DriveNumber, IN ULONG PartitionNumber, OUT PPARTITION_TABLE_ENTRY PartitionTableEntry)
ULONG	LoadBootDeviceDriver (VOID)

Variables
PVOID	DiskReadBuffer
SIZE_T	DiskReadBufferSize
CCHAR	FrLdrBootPath [MAX_PATH]

Macro Definition Documentation

PARTITION_ENTRY_UNUSED

#define PARTITION_ENTRY_UNUSED   0x00

Definition at line 86 of file disk.h.

PARTITION_EXTENDED

#define PARTITION_EXTENDED   0x05

Definition at line 91 of file disk.h.

PARTITION_FAT32

#define PARTITION_FAT32   0x0B

Definition at line 95 of file disk.h.

PARTITION_FAT32_XINT13

#define PARTITION_FAT32_XINT13   0x0C

Definition at line 96 of file disk.h.

PARTITION_FAT_12

#define PARTITION_FAT_12   0x01

Definition at line 87 of file disk.h.

PARTITION_FAT_16

#define PARTITION_FAT_16   0x04

Definition at line 90 of file disk.h.

PARTITION_GPT

#define PARTITION_GPT   0xEE

Definition at line 105 of file disk.h.

PARTITION_HUGE

#define PARTITION_HUGE   0x06

Definition at line 92 of file disk.h.

PARTITION_IFS

#define PARTITION_IFS   0x07

Definition at line 93 of file disk.h.

PARTITION_LDM

#define PARTITION_LDM   0x42

Definition at line 101 of file disk.h.

PARTITION_NTFS

#define PARTITION_NTFS   0x17

Definition at line 99 of file disk.h.

PARTITION_NTFT

#define PARTITION_NTFT   0x80

Definition at line 104 of file disk.h.

PARTITION_OS2BOOTMGR

#define PARTITION_OS2BOOTMGR   0x0A

Definition at line 94 of file disk.h.

PARTITION_PREP

#define PARTITION_PREP   0x41

Definition at line 100 of file disk.h.

PARTITION_UNIX

#define PARTITION_UNIX   0x63

Definition at line 102 of file disk.h.

PARTITION_XENIX_1

#define PARTITION_XENIX_1   0x02

Definition at line 88 of file disk.h.

PARTITION_XENIX_2

#define PARTITION_XENIX_2   0x03

Definition at line 89 of file disk.h.

PARTITION_XINT13

#define PARTITION_XINT13   0x0E

Definition at line 97 of file disk.h.

PARTITION_XINT13_EXTENDED

#define PARTITION_XINT13_EXTENDED   0x0F

Definition at line 98 of file disk.h.

VALID_NTFT

#define VALID_NTFT   0xC0

Definition at line 103 of file disk.h.

Typedef Documentation

EXTENDED_GEOMETRY

typedef struct _EXTENDED_GEOMETRY EXTENDED_GEOMETRY

GEOMETRY

typedef struct _GEOMETRY GEOMETRY

MASTER_BOOT_RECORD

typedef struct _MASTER_BOOT_RECORD MASTER_BOOT_RECORD

PARTITION_TABLE_ENTRY

typedef struct _PARTITION_TABLE_ENTRY PARTITION_TABLE_ENTRY

PEXTENDED_GEOMETRY

typedef struct _EXTENDED_GEOMETRY * PEXTENDED_GEOMETRY

PGEOMETRY

typedef struct _GEOMETRY * PGEOMETRY

PMASTER_BOOT_RECORD

typedef struct _MASTER_BOOT_RECORD * PMASTER_BOOT_RECORD

PPARTITION_TABLE_ENTRY

typedef struct _PARTITION_TABLE_ENTRY * PPARTITION_TABLE_ENTRY

Function Documentation

DiskDetectPartitionType()

VOID DiskDetectPartitionType

(

IN UCHAR

DriveNumber

)

Definition at line 314 of file partition.c.

{
    MASTER_BOOT_RECORD MasterBootRecord;
    ULONG Index;
    ULONG PartitionCount = 0;
    PPARTITION_TABLE_ENTRY ThisPartitionTableEntry;
    BOOLEAN GPTProtect = FALSE;
    PARTITION_TABLE_ENTRY PartitionTableEntry;
 
    /* Probe for Master Boot Record */
    if (DiskReadBootRecord(DriveNumber, 0, &MasterBootRecord))
    {
        DiskPartitionType[DriveNumber] = PARTITION_STYLE_MBR;
 
        /* Check for GUID Partition Table */
        for (Index = 0; Index < 4; Index++)
        {
            ThisPartitionTableEntry = &MasterBootRecord.PartitionTable[Index];
 
            if (ThisPartitionTableEntry->SystemIndicator != PARTITION_ENTRY_UNUSED)
            {
                PartitionCount++;
 
                if (Index == 0 && ThisPartitionTableEntry->SystemIndicator == PARTITION_GPT)
                {
                    GPTProtect = TRUE;
                }
            }
        }
 
        if (PartitionCount == 1 && GPTProtect)
        {
            DiskPartitionType[DriveNumber] = PARTITION_STYLE_GPT;
        }
        TRACE("Drive 0x%X partition type %s\n", DriveNumber, DiskPartitionType[DriveNumber] == PARTITION_STYLE_MBR ? "MBR" : "GPT");
        return;
    }
 
    /* Probe for Xbox-BRFR partitioning */
    if (DiskGetBrfrPartitionEntry(DriveNumber, FATX_DATA_PARTITION, &PartitionTableEntry))
    {
        DiskPartitionType[DriveNumber] = PARTITION_STYLE_BRFR;
        TRACE("Drive 0x%X partition type Xbox-BRFR\n", DriveNumber);
        return;
    }
 
    /* Failed to detect partitions, assume partitionless disk */
    DiskPartitionType[DriveNumber] = PARTITION_STYLE_RAW;
    TRACE("Drive 0x%X partition type unknown\n", DriveNumber);
}

Referenced by GetHarddiskInformation().

DiskGetBootPartitionEntry()

BOOLEAN DiskGetBootPartitionEntry	(	IN UCHAR	DriveNumber,
		OUT PPARTITION_TABLE_ENTRY	PartitionTableEntry,
		OUT PULONG	BootPartition
	)

Definition at line 367 of file partition.c.

{
    switch (DiskPartitionType[DriveNumber])
    {
        case PARTITION_STYLE_MBR:
        {
            return DiskGetActivePartitionEntry(DriveNumber, PartitionTableEntry, BootPartition);
        }
        case PARTITION_STYLE_GPT:
        {
            FIXME("DiskGetBootPartitionEntry() unimplemented for GPT\n");
            return FALSE;
        }
        case PARTITION_STYLE_RAW:
        {
            FIXME("DiskGetBootPartitionEntry() unimplemented for RAW\n");
            return FALSE;
        }
        case PARTITION_STYLE_BRFR:
        {
            if (DiskGetBrfrPartitionEntry(DriveNumber, FATX_DATA_PARTITION, PartitionTableEntry))
            {
                *BootPartition = FATX_DATA_PARTITION;
                return TRUE;
            }
            return FALSE;
        }
        default:
        {
            ERR("Drive 0x%X partition type = %d, should not happen!\n", DriveNumber, DiskPartitionType[DriveNumber]);
            ASSERT(FALSE);
        }
    }
    return FALSE;
}

Referenced by DiskGetBootPath().

DiskGetPartitionEntry()

BOOLEAN DiskGetPartitionEntry	(	IN UCHAR	DriveNumber,
		IN ULONG	PartitionNumber,
		OUT PPARTITION_TABLE_ENTRY	PartitionTableEntry
	)

Definition at line 407 of file partition.c.

{
    switch (DiskPartitionType[DriveNumber])
    {
        case PARTITION_STYLE_MBR:
        {
            return DiskGetMbrPartitionEntry(DriveNumber, PartitionNumber, PartitionTableEntry);
        }
        case PARTITION_STYLE_GPT:
        {
            FIXME("DiskGetPartitionEntry() unimplemented for GPT\n");
            return FALSE;
        }
        case PARTITION_STYLE_RAW:
        {
            FIXME("DiskGetPartitionEntry() unimplemented for RAW\n");
            return FALSE;
        }
        case PARTITION_STYLE_BRFR:
        {
            return DiskGetBrfrPartitionEntry(DriveNumber, PartitionNumber, PartitionTableEntry);
        }
        default:
        {
            ERR("Drive 0x%X partition type = %d, should not happen!\n", DriveNumber, DiskPartitionType[DriveNumber]);
            ASSERT(FALSE);
        }
    }
    return FALSE;
}

Referenced by DiskOpen(), GetHarddiskInformation(), and UefiDiskOpen().

LoadBootDeviceDriver()

ULONG LoadBootDeviceDriver

(

VOID

)

Definition at line 1626 of file scsiport.c.

{
    PIMAGE_NT_HEADERS NtHeaders;
    LIST_ENTRY ModuleListHead;
    PIMAGE_IMPORT_DESCRIPTOR ImportTable;
    ULONG ImportTableSize;
    PLDR_DATA_TABLE_ENTRY BootDdDTE, FreeldrDTE;
    CHAR NtBootDdPath[MAX_PATH];
    PVOID ImageBase = NULL;
    ULONG (NTAPI *EntryPoint)(IN PVOID DriverObject, IN PVOID RegistryPath);
    BOOLEAN Success;
 
    // FIXME: Must be done *INSIDE* the HAL!
#ifdef _M_IX86
    HalpInitializePciStubs();
    HalpInitBusHandler();
#endif
 
    /* Initialize the loaded module list */
    InitializeListHead(&ModuleListHead);
 
    /* Create full ntbootdd.sys path */
    strcpy(NtBootDdPath, FrLdrBootPath);
    strcat(NtBootDdPath, "\\NTBOOTDD.SYS");
 
    /* Load file */
    Success = PeLdrLoadImage(NtBootDdPath, LoaderBootDriver, &ImageBase);
    if (!Success)
    {
        /* That's OK, file simply doesn't exist */
        return ESUCCESS;
    }
 
    /* Allocate a DTE for ntbootdd */
    Success = PeLdrAllocateDataTableEntry(&ModuleListHead, "ntbootdd.sys",
                                          "NTBOOTDD.SYS", ImageBase, &BootDdDTE);
    if (!Success)
    {
        /* Cleanup and bail out */
        MmFreeMemory(ImageBase);
        return EIO;
    }
 
    /* Add the PE part of freeldr.sys to the list of loaded executables, it
       contains ScsiPort* exports, imported by ntbootdd.sys */
    Success = PeLdrAllocateDataTableEntry(&ModuleListHead, "scsiport.sys",
                                          "FREELDR.SYS", &__ImageBase, &FreeldrDTE);
    if (!Success)
    {
        /* Cleanup and bail out */
        PeLdrFreeDataTableEntry(BootDdDTE);
        MmFreeMemory(ImageBase);
        return EIO;
    }
 
    /* Fix imports */
    Success = PeLdrScanImportDescriptorTable(&ModuleListHead, "", BootDdDTE);
    if (!Success)
    {
        /* Cleanup and bail out */
        PeLdrFreeDataTableEntry(FreeldrDTE);
        PeLdrFreeDataTableEntry(BootDdDTE);
        MmFreeMemory(ImageBase);
        return EIO;
    }
 
    /* Now unlink the DTEs, they won't be valid later */
    RemoveEntryList(&BootDdDTE->InLoadOrderLinks);
    RemoveEntryList(&FreeldrDTE->InLoadOrderLinks);
 
    /* Change imports to PA */
    ImportTable = (PIMAGE_IMPORT_DESCRIPTOR)RtlImageDirectoryEntryToData(VaToPa(BootDdDTE->DllBase),
        TRUE, IMAGE_DIRECTORY_ENTRY_IMPORT, &ImportTableSize);
    for (;(ImportTable->Name != 0) && (ImportTable->FirstThunk != 0);ImportTable++)
    {
        PIMAGE_THUNK_DATA ThunkData = (PIMAGE_THUNK_DATA)VaToPa(RVA(BootDdDTE->DllBase, ImportTable->FirstThunk));
 
        while (((PIMAGE_THUNK_DATA)ThunkData)->u1.AddressOfData != 0)
        {
            ThunkData->u1.Function = (ULONG)VaToPa((PVOID)ThunkData->u1.Function);
            ThunkData++;
        }
    }
 
    /* Relocate image to PA */
    NtHeaders = RtlImageNtHeader(VaToPa(BootDdDTE->DllBase));
    if (!NtHeaders)
        return EIO;
    Success = (BOOLEAN)LdrRelocateImageWithBias(VaToPa(BootDdDTE->DllBase),
                                                NtHeaders->OptionalHeader.ImageBase - (ULONG_PTR)BootDdDTE->DllBase,
                                                "FreeLdr",
                                                TRUE,
                                                TRUE, /* In case of conflict still return success */
                                                FALSE);
    if (!Success)
        return EIO;
 
    /* Call the entrypoint */
    EntryPoint = VaToPa(BootDdDTE->EntryPoint);
    (*EntryPoint)(NULL, NULL);
 
    return ESUCCESS;
}

Referenced by RunLoader().

Variable Documentation

DiskReadBuffer

PVOID DiskReadBuffer

extern

Definition at line 46 of file hwdisk.c.

Referenced by DiskRead(), EnumerateHarddisks(), GetHarddiskInformation(), PcInitializeBootDevices(), UefiDiskRead(), and UefiInitializeBootDevices().

DiskReadBufferSize

SIZE_T DiskReadBufferSize

extern

Definition at line 47 of file hwdisk.c.

Referenced by DiskOpen(), DiskRead(), EnumerateHarddisks(), PcMemFinalizeMemoryMap(), UefiDiskOpen(), UefiDiskRead(), and UefiInitializeBootDevices().

FrLdrBootPath

CCHAR FrLdrBootPath[MAX_PATH]

extern

Definition at line 39 of file freeldr.c.

Referenced by ArmInitializeBootDevices(), BuildArgvForOsLoader(), DiskGetBootPath(), IniFileInitialize(), LoadBootDeviceDriver(), PcInitializeBootDevices(), UefiInitializeBootDevices(), and UefiSetBootpath().