partlist.h File Reference

#include "volutil.h"
#include <pshpack1.h>
#include <poppack.h>

Include dependency graph for partlist.h:

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Go to the source code of this file.

Classes
struct	_VOLENTRY
struct	_PARTENTRY
struct	_DISKENTRY
struct	_BIOSDISKENTRY
struct	_PARTLIST
struct	_PARTITION
struct	_PARTITION_SECTOR
struct	BIOS_DISK

Macros
#define	PARTITION_EISA   0x12
#define	PARTITION_HIBERNATION   0x84
#define	PARTITION_DIAGNOSTIC   0xA0
#define	PARTITION_DELL   0xDE
#define	PARTITION_IBM   0xFE
#define	IsOEMPartition(PartitionType)
#define	PARTITION_TBL_SIZE   4
#define	PARTITION_MAGIC   0xAA55
#define	EFI_PMBR_OSTYPE_EFI   0xEE
#define	GetPartEntryOffsetInBytes(PartEntry)    ((PartEntry)->StartSector.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)
#define	GetPartEntrySizeInBytes(PartEntry)    ((PartEntry)->SectorCount.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)
#define	GetDiskSizeInBytes(DiskEntry)    ((DiskEntry)->SectorCount.QuadPart * (DiskEntry)->BytesPerSector)

Typedefs
typedef enum _FORMATSTATE	FORMATSTATE
typedef enum _FORMATSTATE *	PFORMATSTATE
typedef struct _PARTENTRY	PARTENTRY
typedef struct _PARTENTRY *	PPARTENTRY
typedef struct _VOLENTRY	VOLENTRY
typedef struct _VOLENTRY *	PVOLENTRY
typedef struct _DISKENTRY	DISKENTRY
typedef struct _DISKENTRY *	PDISKENTRY
typedef struct _BIOSDISKENTRY	BIOSDISKENTRY
typedef struct _BIOSDISKENTRY *	PBIOSDISKENTRY
typedef struct _PARTLIST	PARTLIST
typedef struct _PARTLIST *	PPARTLIST
typedef struct _PARTITION	PARTITION
typedef struct _PARTITION *	PPARTITION
typedef struct _PARTITION_SECTOR	PARTITION_SECTOR
typedef struct _PARTITION_SECTOR *	PPARTITION_SECTOR
typedef struct BIOS_DISK *	PBIOS_DISK

Enumerations
enum	_FORMATSTATE {   Unformatted , UnformattedOrDamaged , UnknownFormat , Formatted ,   Unformatted , UnformattedOrDamaged , UnknownFormat , Preformatted ,   Formatted }

Functions
ULONGLONG	AlignDown (IN ULONGLONG Value, IN ULONG Alignment)
ULONGLONG	AlignUp (IN ULONGLONG Value, IN ULONG Alignment)
ULONGLONG	RoundingDivide (IN ULONGLONG Dividend, IN ULONGLONG Divisor)
BOOLEAN	IsDiskSuperFloppy2 (_In_ const DISK_PARTITION_INFO *DiskInfo, _In_opt_ const ULONGLONG *DiskSize, _In_ const PARTITION_INFORMATION *PartitionInfo)
BOOLEAN	IsDiskSuperFloppy (_In_ const DRIVE_LAYOUT_INFORMATION *Layout, _In_opt_ const ULONGLONG *DiskSize)
BOOLEAN	IsDiskSuperFloppyEx (_In_ const DRIVE_LAYOUT_INFORMATION_EX *LayoutEx, _In_opt_ const ULONGLONG *DiskSize)
BOOLEAN	IsSuperFloppy (_In_ PDISKENTRY DiskEntry)
BOOLEAN	IsPartitionActive (IN PPARTENTRY PartEntry)
PPARTLIST NTAPI	CreatePartitionList (VOID)
VOID NTAPI	DestroyPartitionList (IN PPARTLIST List)
PDISKENTRY	GetDiskByBiosNumber (_In_ PPARTLIST List, _In_ ULONG HwDiskNumber)
PDISKENTRY	GetDiskByNumber (_In_ PPARTLIST List, _In_ ULONG DiskNumber)
PDISKENTRY	GetDiskBySCSI (_In_ PPARTLIST List, _In_ USHORT Port, _In_ USHORT Bus, _In_ USHORT Id)
PDISKENTRY	GetDiskBySignature (_In_ PPARTLIST List, _In_ ULONG Signature)
PPARTENTRY	GetPartition (_In_ PDISKENTRY DiskEntry, _In_ ULONG PartitionNumber)
PPARTENTRY	SelectPartition (_In_ PPARTLIST List, _In_ ULONG DiskNumber, _In_ ULONG PartitionNumber)
PPARTENTRY NTAPI	GetNextPartition (IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL)
PPARTENTRY NTAPI	GetPrevPartition (IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL)
PPARTENTRY NTAPI	GetAdjUnpartitionedEntry (_In_ PPARTENTRY PartEntry, _In_ BOOLEAN Direction)
	Retrieves, if any, the unpartitioned disk region that is adjacent (next or previous) to the specified partition.
ERROR_NUMBER NTAPI	PartitionCreateChecks (_In_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo)
BOOLEAN NTAPI	CreatePartition (_In_ PPARTLIST List, _Inout_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo)
BOOLEAN NTAPI	DeletePartition (_In_ PPARTLIST List, _In_ PPARTENTRY PartEntry, _Out_opt_ PPARTENTRY *FreeRegion)
PPARTENTRY	FindSupportedSystemPartition (IN PPARTLIST List, IN BOOLEAN ForceSelect, IN PDISKENTRY AlternativeDisk OPTIONAL, IN PPARTENTRY AlternativePart OPTIONAL)
BOOLEAN	SetActivePartition (IN PPARTLIST List, IN PPARTENTRY PartEntry, IN PPARTENTRY OldActivePart OPTIONAL)
NTSTATUS	WritePartitions (IN PDISKENTRY DiskEntry)
BOOLEAN	WritePartitionsToDisk (IN PPARTLIST List)
BOOLEAN	SetMountedDeviceValues (_In_ PPARTLIST List)
VOID	SetMBRPartitionType (IN PPARTENTRY PartEntry, IN UCHAR PartitionType)

Macro Definition Documentation

EFI_PMBR_OSTYPE_EFI

#define EFI_PMBR_OSTYPE_EFI   0xEE

Definition at line 197 of file partlist.h.

GetDiskSizeInBytes

#define GetDiskSizeInBytes

(

DiskEntry

)

((DiskEntry)->SectorCount.QuadPart * (DiskEntry)->BytesPerSector)

Definition at line 258 of file partlist.h.

GetPartEntryOffsetInBytes

#define GetPartEntryOffsetInBytes

(

PartEntry

)

((PartEntry)->StartSector.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)

Definition at line 252 of file partlist.h.

GetPartEntrySizeInBytes

#define GetPartEntrySizeInBytes

(

PartEntry

)

((PartEntry)->SectorCount.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)

Definition at line 255 of file partlist.h.

IsOEMPartition

#define IsOEMPartition

(

PartitionType

)

Value:

    ( ((PartitionType) == PARTITION_EISA)        || \
      ((PartitionType) == PARTITION_HIBERNATION) || \
      ((PartitionType) == PARTITION_DIAGNOSTIC)  || \
      ((PartitionType) == PARTITION_DELL)        || \
      ((PartitionType) == PARTITION_IBM) )

Definition at line 22 of file partlist.h.

PARTITION_DELL

#define PARTITION_DELL   0xDE

Definition at line 19 of file partlist.h.

PARTITION_DIAGNOSTIC

#define PARTITION_DIAGNOSTIC   0xA0

Definition at line 18 of file partlist.h.

PARTITION_EISA

#define PARTITION_EISA   0x12

Definition at line 16 of file partlist.h.

PARTITION_HIBERNATION

#define PARTITION_HIBERNATION   0x84

Definition at line 17 of file partlist.h.

PARTITION_IBM

#define PARTITION_IBM   0xFE

Definition at line 20 of file partlist.h.

PARTITION_MAGIC

#define PARTITION_MAGIC   0xAA55

Definition at line 194 of file partlist.h.

PARTITION_TBL_SIZE

#define PARTITION_TBL_SIZE   4

Definition at line 192 of file partlist.h.

Typedef Documentation

BIOSDISKENTRY

typedef struct _BIOSDISKENTRY BIOSDISKENTRY

DISKENTRY

typedef struct _DISKENTRY DISKENTRY

FORMATSTATE

typedef enum _FORMATSTATE FORMATSTATE

PARTENTRY

typedef struct _PARTENTRY PARTENTRY

Definition at line 42 of file partlist.h.

PARTITION

typedef struct _PARTITION PARTITION

PARTITION_SECTOR

typedef struct _PARTITION_SECTOR PARTITION_SECTOR

PARTLIST

typedef struct _PARTLIST PARTLIST

PBIOS_DISK

typedef struct BIOS_DISK * PBIOS_DISK

PBIOSDISKENTRY

typedef struct _BIOSDISKENTRY * PBIOSDISKENTRY

PDISKENTRY

typedef struct _DISKENTRY * PDISKENTRY

PFORMATSTATE

typedef enum _FORMATSTATE * PFORMATSTATE

PPARTENTRY

typedef struct _PARTENTRY * PPARTENTRY

Definition at line 42 of file partlist.h.

PPARTITION

typedef struct _PARTITION * PPARTITION

PPARTITION_SECTOR

typedef struct _PARTITION_SECTOR * PPARTITION_SECTOR

PPARTLIST

typedef struct _PARTLIST * PPARTLIST

PVOLENTRY

typedef struct _VOLENTRY * PVOLENTRY

VOLENTRY

typedef struct _VOLENTRY VOLENTRY

Enumeration Type Documentation

_FORMATSTATE

enum _FORMATSTATE

Enumerator
Unformatted
UnformattedOrDamaged
UnknownFormat
Formatted
Unformatted
UnformattedOrDamaged
UnknownFormat
Preformatted
Formatted

Definition at line 32 of file partlist.h.

{
    Unformatted,
    UnformattedOrDamaged,
    UnknownFormat,
    Formatted
} FORMATSTATE, *PFORMATSTATE;

Function Documentation

AlignDown()

ULONGLONG AlignDown	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 69 of file partlist.c.

{
    ULONGLONG Temp;
 
    Temp = Value / Alignment;
 
    return Temp * Alignment;
}

Referenced by AddDiskToList(), ConvertGPT(), InitializePartitionEntry(), ScanForUnpartitionedDiskSpace(), ScanForUnpartitionedGptDiskSpace(), and ScanForUnpartitionedMbrDiskSpace().

AlignUp()

ULONGLONG AlignUp	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 81 of file partlist.c.

{
    ULONGLONG Temp, Result;
 
    Temp = Value / Alignment;
 
    Result = Temp * Alignment;
    if (Value % Alignment)
        Result += Alignment;
 
    return Result;
}

Referenced by PeFmtCreateSection().

CreatePartition()

BOOLEAN NTAPI CreatePartition	(	_In_ PPARTLIST	List,
		_Inout_ PPARTENTRY	PartEntry,
		_In_opt_ ULONGLONG	SizeBytes,
		_In_opt_ ULONG_PTR	PartitionInfo
	)

Definition at line 2975 of file partlist.c.

{
    ERROR_NUMBER Error;
    BOOLEAN isContainer = IsContainerPartition((UCHAR)PartitionInfo);
    PDISKENTRY DiskEntry;
    PCSTR mainType = "Primary";
 
    if (isContainer)
        mainType = "Extended";
    else if (PartEntry && PartEntry->LogicalPartition)
        mainType = "Logical";
 
    DPRINT1("CreatePartition(%s, %I64u bytes)\n", mainType, SizeBytes);
 
    if (!List || !PartEntry ||
        !PartEntry->DiskEntry || PartEntry->IsPartitioned)
    {
        return FALSE;
    }
 
    Error = PartitionCreateChecks(PartEntry, SizeBytes, PartitionInfo);
    if (Error != NOT_AN_ERROR)
    {
        DPRINT1("PartitionCreateChecks(%s) failed with error %lu\n", mainType, Error);
        return FALSE;
    }
 
    /* Initialize the partition entry, inserting a new blank region if needed */
    if (!InitializePartitionEntry(PartEntry, SizeBytes, PartitionInfo))
        return FALSE;
 
    DiskEntry = PartEntry->DiskEntry;
    UpdateDiskLayout(DiskEntry);
 
    ASSERT(!PartEntry->Volume);
    if (!isContainer)
    {
        /* We create a primary/logical partition: initialize a new basic
         * volume entry. When the partition will actually be written onto
         * the disk, the PARTMGR will notify the MOUNTMGR that a volume
         * associated with this partition has to be created. */
        PartEntry->Volume = InitVolume(DiskEntry->PartList, PartEntry);
        ASSERT(PartEntry->Volume);
    }
 
    AssignDriveLetters(List);
 
    return TRUE;
}

Referenced by CreatePartitionPage(), DoCreatePartition(), InitSystemPartition(), and SelectPartitionPage().

CreatePartitionList()

PPARTLIST NTAPI CreatePartitionList

(

VOID

)

Definition at line 2043 of file partlist.c.

{
    PPARTLIST List;
    PDISKENTRY SystemDisk;
    OBJECT_ATTRIBUTES ObjectAttributes;
    SYSTEM_DEVICE_INFORMATION Sdi;
    IO_STATUS_BLOCK Iosb;
    ULONG ReturnSize;
    NTSTATUS Status;
    ULONG DiskNumber;
    HANDLE FileHandle;
    UNICODE_STRING Name;
    WCHAR Buffer[MAX_PATH];
 
    List = (PPARTLIST)RtlAllocateHeap(ProcessHeap,
                                      0,
                                      sizeof(PARTLIST));
    if (!List)
        return NULL;
 
    List->SystemPartition = NULL;
 
    InitializeListHead(&List->DiskListHead);
    InitializeListHead(&List->BiosDiskListHead);
    InitializeListHead(&List->VolumesList);
    InitializeListHead(&List->PendingUnmountVolumesList);
 
    /*
     * Enumerate the disks seen by the BIOS; this will be used later
     * to map drives seen by NTOS with their corresponding BIOS names.
     */
    EnumerateBiosDiskEntries(List);
 
    /* Enumerate disks seen by NTOS */
    Status = NtQuerySystemInformation(SystemDeviceInformation,
                                      &Sdi,
                                      sizeof(Sdi),
                                      &ReturnSize);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtQuerySystemInformation() failed, Status 0x%08lx\n", Status);
        RtlFreeHeap(ProcessHeap, 0, List);
        return NULL;
    }
 
    for (DiskNumber = 0; DiskNumber < Sdi.NumberOfDisks; DiskNumber++)
    {
        RtlStringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
                            L"\\Device\\Harddisk%lu\\Partition0",
                            DiskNumber);
        RtlInitUnicodeString(&Name, Buffer);
 
        InitializeObjectAttributes(&ObjectAttributes,
                                   &Name,
                                   OBJ_CASE_INSENSITIVE,
                                   NULL,
                                   NULL);
 
        Status = NtOpenFile(&FileHandle,
                            FILE_READ_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE,
                            &ObjectAttributes,
                            &Iosb,
                            FILE_SHARE_READ | FILE_SHARE_WRITE,
                            FILE_SYNCHRONOUS_IO_NONALERT);
        if (NT_SUCCESS(Status))
        {
            AddDiskToList(FileHandle, DiskNumber, List);
            NtClose(FileHandle);
        }
    }
 
    UpdateDiskSignatures(List);
    UpdateHwDiskNumbers(List);
    AssignDriveLetters(List);
 
    /*
     * Retrieve the system partition: the active partition on the system
     * disk (the one that will be booted by default by the hardware).
     */
    SystemDisk = GetSystemDisk(List);
    List->SystemPartition = (SystemDisk ? GetActiveDiskPartition(SystemDisk) : NULL);
 
    return List;
}

DeletePartition()

BOOLEAN NTAPI DeletePartition	(	_In_ PPARTLIST	List,
		_In_ PPARTENTRY	PartEntry,
		_Out_opt_ PPARTENTRY *	FreeRegion
	)

Definition at line 3075 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PPARTENTRY PrevPartEntry;
    PPARTENTRY NextPartEntry;
    PPARTENTRY LogicalPartEntry;
    PLIST_ENTRY Entry;
 
    if (!List || !PartEntry ||
        !PartEntry->DiskEntry || !PartEntry->IsPartitioned)
    {
        return FALSE;
    }
 
    ASSERT(PartEntry->DiskEntry->PartList == List);
    ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
    /* Clear the system partition if it is being deleted */
    if (List->SystemPartition == PartEntry)
    {
        ASSERT(List->SystemPartition);
        List->SystemPartition = NULL;
    }
 
    DiskEntry = PartEntry->DiskEntry;
 
    /* Check which type of partition (primary/logical or extended) is being deleted */
    if (DiskEntry->ExtendedPartition == PartEntry)
    {
        /* An extended partition is being deleted: delete all logical partition entries */
        while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
            LogicalPartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
            /* Dismount the logical partition and delete it */
            DismountPartition(List, LogicalPartEntry);
            DestroyRegion(LogicalPartEntry);
        }
 
        DiskEntry->ExtendedPartition = NULL;
    }
    else
    {
        /* A primary/logical partition is being deleted: dismount it */
        DismountPartition(List, PartEntry);
    }
 
    /* Adjust the unpartitioned disk space entries */
 
    /* Get pointer to previous and next unpartitioned entries */
    PrevPartEntry = GetAdjUnpartitionedEntry(PartEntry, FALSE);
    NextPartEntry = GetAdjUnpartitionedEntry(PartEntry, TRUE);
 
    if (PrevPartEntry != NULL && NextPartEntry != NULL)
    {
        /* Merge the previous, current and next unpartitioned entries */
 
        /* Adjust the previous entry length */
        PrevPartEntry->SectorCount.QuadPart += (PartEntry->SectorCount.QuadPart + NextPartEntry->SectorCount.QuadPart);
 
        /* Remove the current and next entries */
        RemoveEntryList(&PartEntry->ListEntry);
        DestroyRegion(PartEntry);
        RemoveEntryList(&NextPartEntry->ListEntry);
        DestroyRegion(NextPartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PrevPartEntry;
    }
    else if (PrevPartEntry != NULL && NextPartEntry == NULL)
    {
        /* Merge the current and the previous unpartitioned entries */
 
        /* Adjust the previous entry length */
        PrevPartEntry->SectorCount.QuadPart += PartEntry->SectorCount.QuadPart;
 
        /* Remove the current entry */
        RemoveEntryList(&PartEntry->ListEntry);
        DestroyRegion(PartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PrevPartEntry;
    }
    else if (PrevPartEntry == NULL && NextPartEntry != NULL)
    {
        /* Merge the current and the next unpartitioned entries */
 
        /* Adjust the next entry offset and length */
        NextPartEntry->StartSector.QuadPart = PartEntry->StartSector.QuadPart;
        NextPartEntry->SectorCount.QuadPart += PartEntry->SectorCount.QuadPart;
 
        /* Remove the current entry */
        RemoveEntryList(&PartEntry->ListEntry);
        DestroyRegion(PartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = NextPartEntry;
    }
    else
    {
        /* Nothing to merge but change the current entry */
        PartEntry->New = FALSE;
        PartEntry->IsPartitioned = FALSE;
        PartEntry->PartitionType = PARTITION_ENTRY_UNUSED;
        PartEntry->OnDiskPartitionNumber = 0;
        PartEntry->PartitionNumber = 0;
        // PartEntry->PartitionIndex = 0;
        PartEntry->BootIndicator = FALSE;
        PartEntry->DeviceName[0] = UNICODE_NULL;
 
        if (PartEntry->Volume)
        {
            RemoveEntryList(&PartEntry->Volume->ListEntry);
            RtlFreeHeap(ProcessHeap, 0, PartEntry->Volume);
        }
        PartEntry->Volume = NULL;
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PartEntry;
    }
 
    UpdateDiskLayout(DiskEntry);
    AssignDriveLetters(List);
 
    return TRUE;
}

Referenced by DeletePartitionPage(), and DoDeletePartition().

DestroyPartitionList()

VOID NTAPI DestroyPartitionList

(

IN PPARTLIST

List

)

Definition at line 2130 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PBIOSDISKENTRY BiosDiskEntry;
    PPARTENTRY PartEntry;
    PVOLENTRY VolumeEntry;
    PLIST_ENTRY Entry;
 
    /* Release disk and partition info */
    while (!IsListEmpty(&List->DiskListHead))
    {
        Entry = RemoveHeadList(&List->DiskListHead);
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        /* Release driver name */
        RtlFreeUnicodeString(&DiskEntry->DriverName);
 
        /* Release primary partition list */
        while (!IsListEmpty(&DiskEntry->PrimaryPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->PrimaryPartListHead);
            PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
            DestroyRegion(PartEntry);
        }
 
        /* Release logical partition list */
        while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
            PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
            DestroyRegion(PartEntry);
        }
 
        /* Release layout buffer */
        if (DiskEntry->LayoutBuffer != NULL)
            RtlFreeHeap(ProcessHeap, 0, DiskEntry->LayoutBuffer);
 
        /* Release disk entry */
        RtlFreeHeap(ProcessHeap, 0, DiskEntry);
    }
 
    /* Release the BIOS disk info */
    while (!IsListEmpty(&List->BiosDiskListHead))
    {
        Entry = RemoveHeadList(&List->BiosDiskListHead);
        BiosDiskEntry = CONTAINING_RECORD(Entry, BIOSDISKENTRY, ListEntry);
        RtlFreeHeap(ProcessHeap, 0, BiosDiskEntry);
    }
 
    /* Release the pending volumes info */
    while (!IsListEmpty(&List->PendingUnmountVolumesList))
    {
        Entry = RemoveHeadList(&List->PendingUnmountVolumesList);
        VolumeEntry = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
        RtlFreeHeap(ProcessHeap, 0, VolumeEntry);
    }
 
    /* Release list head */
    RtlFreeHeap(ProcessHeap, 0, List);
}

Referenced by QuitPage(), rescan_main(), SelectPartitionPage(), and wmain().

FindSupportedSystemPartition()

PPARTENTRY FindSupportedSystemPartition	(	IN PPARTLIST	List,
		IN BOOLEAN	ForceSelect,
		IN PDISKENTRY AlternativeDisk	OPTIONAL,
		IN PPARTENTRY AlternativePart	OPTIONAL
	)

Definition at line 3300 of file partlist.c.

{
    PLIST_ENTRY ListEntry;
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
    PPARTENTRY ActivePartition;
    PPARTENTRY CandidatePartition = NULL;
 
    /* Check for empty disk list */
    if (IsListEmpty(&List->DiskListHead))
    {
        /* No system partition! */
        ASSERT(List->SystemPartition == NULL);
        goto NoSystemPartition;
    }
 
    /* Adjust the optional alternative disk if needed */
    if (!AlternativeDisk && AlternativePart)
        AlternativeDisk = AlternativePart->DiskEntry;
 
    /* Ensure that the alternative partition is on the alternative disk */
    if (AlternativePart)
        ASSERT(AlternativeDisk && (AlternativePart->DiskEntry == AlternativeDisk));
 
    /* Ensure that the alternative disk is in the list */
    if (AlternativeDisk)
        ASSERT(AlternativeDisk->PartList == List);
 
    /* Start fresh */
    CandidatePartition = NULL;
 
//
// Step 1 : Check the system disk.
//
 
    /*
     * First, check whether the system disk, i.e. the one that will be booted
     * by default by the hardware, contains an active partition. If so this
     * should be our system partition.
     */
    DiskEntry = GetSystemDisk(List);
    if (!DiskEntry)
    {
        /* No system disk found, directly go check the alternative disk */
        goto UseAlternativeDisk;
    }
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("System disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n");
        goto UseAlternativeDisk;
    }
 
    /* If we have a system partition (in the system disk), validate it */
    ActivePartition = List->SystemPartition;
    if (ActivePartition && IsSupportedActivePartition(ActivePartition))
    {
        CandidatePartition = ActivePartition;
 
        DPRINT1("Use the current system partition %lu in disk %lu, drive letter %C\n",
                CandidatePartition->PartitionNumber,
                CandidatePartition->DiskEntry->DiskNumber,
                !CandidatePartition->Volume->Info.DriveLetter ? L'-' : CandidatePartition->Volume->Info.DriveLetter);
 
        /* Return the candidate system partition */
        return CandidatePartition;
    }
 
    /* If the system disk is not the optional alternative disk, perform the minimal checks */
    if (DiskEntry != AlternativeDisk)
    {
        /*
         * No active partition has been recognized. Enumerate all the (primary)
         * partitions in the system disk, excluding the possible current active
         * partition, to find a new candidate.
         */
        for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
             ListEntry != &DiskEntry->PrimaryPartListHead;
             ListEntry = ListEntry->Flink)
        {
            /* Retrieve the partition */
            PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
            /* Skip the current active partition */
            if (PartEntry == ActivePartition)
                continue;
 
            /* Check if the partition is partitioned and used */
            if (PartEntry->IsPartitioned &&
                !IsContainerPartition(PartEntry->PartitionType))
            {
                ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
                /* If we get a candidate active partition in the disk, validate it */
                if (IsSupportedActivePartition(PartEntry))
                {
                    CandidatePartition = PartEntry;
                    goto UseAlternativePartition;
                }
            }
 
#if 0
            /* Check if the partition is partitioned and used */
            if (!PartEntry->IsPartitioned)
            {
                ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
 
                // TODO: Check for minimal size!!
                CandidatePartition = PartEntry;
                goto UseAlternativePartition;
            }
#endif
        }
 
        /*
         * Still nothing, look whether there is some free space that we can use
         * for the new system partition. We must be sure that the total number
         * of partition is less than the maximum allowed, and that the minimal
         * size is fine.
         */
//
// TODO: Fix the handling of system partition being created in unpartitioned space!!
// --> When to partition it? etc...
//
        if (GetPrimaryPartitionCount(DiskEntry) < 4)
        {
            for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
                 ListEntry != &DiskEntry->PrimaryPartListHead;
                 ListEntry = ListEntry->Flink)
            {
                /* Retrieve the partition */
                PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
                /* Skip the current active partition */
                if (PartEntry == ActivePartition)
                    continue;
 
                /* Check for unpartitioned space */
                if (!PartEntry->IsPartitioned)
                {
                    ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
 
                    // TODO: Check for minimal size!!
                    CandidatePartition = PartEntry;
                    goto UseAlternativePartition;
                }
            }
        }
    }
 
 
//
// Step 2 : No active partition found: Check the alternative disk if specified.
//
 
UseAlternativeDisk:
    if (!AlternativeDisk || (!ForceSelect && (DiskEntry != AlternativeDisk)))
        goto NoSystemPartition;
 
    if (AlternativeDisk->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("Alternative disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n");
        goto NoSystemPartition;
    }
 
    if (DiskEntry != AlternativeDisk)
    {
        /* Choose the alternative disk */
        DiskEntry = AlternativeDisk;
 
        /* If we get a candidate active partition, validate it */
        ActivePartition = GetActiveDiskPartition(DiskEntry);
        if (ActivePartition && IsSupportedActivePartition(ActivePartition))
        {
            CandidatePartition = ActivePartition;
            goto UseAlternativePartition;
        }
    }
 
    /* We now may have an unsupported active partition, or none */
 
/***
 *** TODO: Improve the selection:
 *** - If we want a really separate system partition from the partition where
 ***   we install, do something similar to what's done below in the code.
 *** - Otherwise if we allow for the system partition to be also the partition
 ***   where we install, just directly fall down to using AlternativePart.
 ***/
 
    /* Retrieve the first partition of the disk */
    PartEntry = CONTAINING_RECORD(DiskEntry->PrimaryPartListHead.Flink,
                                  PARTENTRY, ListEntry);
    ASSERT(DiskEntry == PartEntry->DiskEntry);
 
    CandidatePartition = PartEntry;
 
    //
    // See: https://svn.reactos.org/svn/reactos/trunk/reactos/base/setup/usetup/partlist.c?r1=63355&r2=63354&pathrev=63355#l2318
    //
 
    /* Check if the disk is new and if so, use its first partition as the active system partition */
    if (DiskEntry->NewDisk)
    {
        // !IsContainerPartition(PartEntry->PartitionType);
        if (!CandidatePartition->IsPartitioned || !CandidatePartition->BootIndicator) /* CandidatePartition != ActivePartition */
        {
            ASSERT(DiskEntry == CandidatePartition->DiskEntry);
 
            DPRINT1("Use new first active system partition %lu in disk %lu, drive letter %C\n",
                    CandidatePartition->PartitionNumber,
                    CandidatePartition->DiskEntry->DiskNumber,
                    (!CandidatePartition->Volume || !CandidatePartition->Volume->Info.DriveLetter) ?
                    L'-' : CandidatePartition->Volume->Info.DriveLetter);
 
            /* Return the candidate system partition */
            return CandidatePartition;
        }
 
        // FIXME: What to do??
        DPRINT1("NewDisk TRUE but first partition is used?\n");
    }
 
    /*
     * The disk is not new, check if any partition is initialized;
     * if not, the first one becomes the system partition.
     */
    for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
         ListEntry != &DiskEntry->PrimaryPartListHead;
         ListEntry = ListEntry->Flink)
    {
        /* Retrieve the partition */
        PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
 
        /* Check if the partition is partitioned and is used */
        // !IsContainerPartition(PartEntry->PartitionType);
        if (/* PartEntry->IsPartitioned && */
            PartEntry->PartitionType != PARTITION_ENTRY_UNUSED || PartEntry->BootIndicator)
        {
            break;
        }
    }
    if (ListEntry == &DiskEntry->PrimaryPartListHead)
    {
        /*
         * OK we haven't encountered any used and active partition,
         * so use the first one as the system partition.
         */
        ASSERT(DiskEntry == CandidatePartition->DiskEntry);
 
        DPRINT1("Use first active system partition %lu in disk %lu, drive letter %C\n",
                CandidatePartition->PartitionNumber,
                CandidatePartition->DiskEntry->DiskNumber,
                (!CandidatePartition->Volume || !CandidatePartition->Volume->Info.DriveLetter) ?
                L'-' : CandidatePartition->Volume->Info.DriveLetter);
 
        /* Return the candidate system partition */
        return CandidatePartition;
    }
 
    /*
     * The disk is not new, we did not find any actual active partition,
     * or the one we found was not supported, or any possible other candidate
     * is not supported. We then use the alternative partition if specified.
     */
    if (AlternativePart)
    {
        DPRINT1("No valid or supported system partition has been found, use the alternative partition!\n");
        CandidatePartition = AlternativePart;
        goto UseAlternativePartition;
    }
    else
    {
NoSystemPartition:
        DPRINT1("No valid or supported system partition has been found on this system!\n");
        return NULL;
    }
 
UseAlternativePartition:
    /*
     * We are here because we did not find any (active) candidate system
     * partition that we know how to support. What we are going to do is
     * to change the existing system partition and use the alternative partition
     * (e.g. on which we install ReactOS) as the new system partition.
     * Then we will need to add in FreeLdr's boot menu an entry for booting
     * from the original system partition.
     */
    ASSERT(CandidatePartition);
 
    DPRINT1("Use alternative active system partition %lu in disk %lu, drive letter %C\n",
            CandidatePartition->PartitionNumber,
            CandidatePartition->DiskEntry->DiskNumber,
            (!CandidatePartition->Volume || !CandidatePartition->Volume->Info.DriveLetter) ?
            L'-' : CandidatePartition->Volume->Info.DriveLetter);
 
    /* Return the candidate system partition */
    return CandidatePartition;
}

Referenced by InitSystemPartition().

GetAdjUnpartitionedEntry()

PPARTENTRY NTAPI GetAdjUnpartitionedEntry	(	_In_ PPARTENTRY	PartEntry,
		_In_ BOOLEAN	Direction
	)

Retrieves, if any, the unpartitioned disk region that is adjacent (next or previous) to the specified partition.

Parameters

[in]	PartEntry	Partition from where to find the adjacent unpartitioned region.
[in]	Direction	TRUE or FALSE to search the next or previous region, respectively.

Returns

The adjacent unpartitioned region, if it exists, or NULL.

Definition at line 2856 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
    PLIST_ENTRY ListHead, AdjEntry;
 
    /* In case of MBR disks only, check the logical partitions if necessary */
    if ((DiskEntry->DiskStyle == PARTITION_STYLE_MBR) &&
        PartEntry->LogicalPartition)
    {
        ListHead = &DiskEntry->LogicalPartListHead;
    }
    else
    {
        ListHead = &DiskEntry->PrimaryPartListHead;
    }
 
    if (Direction)
        AdjEntry = PartEntry->ListEntry.Flink; // Next region.
    else
        AdjEntry = PartEntry->ListEntry.Blink; // Previous region.
 
    if (AdjEntry != ListHead)
    {
        PartEntry = CONTAINING_RECORD(AdjEntry, PARTENTRY, ListEntry);
        if (!PartEntry->IsPartitioned)
        {
            ASSERT(PartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
            return PartEntry;
        }
    }
    return NULL;
}

Referenced by DeletePartition(), DoCreatePartition(), and DoDeletePartition().

GetDiskByBiosNumber()

PDISKENTRY GetDiskByBiosNumber	(	_In_ PPARTLIST	List,
		_In_ ULONG	HwDiskNumber
	)

Definition at line 2193 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->HwDiskNumber == HwDiskNumber)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

GetDiskByNumber()

PDISKENTRY GetDiskByNumber	(	_In_ PPARTLIST	List,
		_In_ ULONG	DiskNumber
	)

Definition at line 2216 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->DiskNumber == DiskNumber)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by SelectPartition().

GetDiskBySCSI()

PDISKENTRY GetDiskBySCSI	(	_In_ PPARTLIST	List,
		_In_ USHORT	Port,
		_In_ USHORT	Bus,
		_In_ USHORT	Id
	)

Definition at line 2239 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->Port == Port &&
            DiskEntry->Bus  == Bus  &&
            DiskEntry->Id   == Id)
        {
            /* Disk found, return it */
            return DiskEntry;
        }
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually().

GetDiskBySignature()

PDISKENTRY GetDiskBySignature	(	_In_ PPARTLIST	List,
		_In_ ULONG	Signature
	)

Definition at line 2269 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PLIST_ENTRY Entry;
 
    /* Loop over the disks and find the correct one */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->LayoutBuffer->Signature == Signature)
            return DiskEntry; /* Disk found, return it */
    }
 
    /* Disk not found, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually().

GetNextPartition()

PPARTENTRY NTAPI GetNextPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2359 of file partlist.c.

{
    PLIST_ENTRY DiskListEntry;
    PLIST_ENTRY PartListEntry;
    PDISKENTRY CurrentDisk;
 
    /* Fail if no disks are available */
    if (IsListEmpty(&List->DiskListHead))
        return NULL;
 
    /* Check for the next usable entry on the current partition's disk */
    if (CurrentPart != NULL)
    {
        CurrentDisk = CurrentPart->DiskEntry;
 
        if (CurrentPart->LogicalPartition)
        {
            /* Logical partition */
 
            PartListEntry = CurrentPart->ListEntry.Flink;
            if (PartListEntry != &CurrentDisk->LogicalPartListHead)
            {
                /* Next logical partition */
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                return CurrentPart;
            }
            else
            {
                PartListEntry = CurrentDisk->ExtendedPartition->ListEntry.Flink;
                if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
        }
        else
        {
            /* Primary or extended partition */
 
            if (CurrentPart->IsPartitioned &&
                IsContainerPartition(CurrentPart->PartitionType))
            {
                /* First logical partition */
                PartListEntry = CurrentDisk->LogicalPartListHead.Flink;
                if (PartListEntry != &CurrentDisk->LogicalPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
            else
            {
                /* Next primary partition */
                PartListEntry = CurrentPart->ListEntry.Flink;
                if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
        }
    }
 
    /* Search for the first partition entry on the next disk */
    for (DiskListEntry = (CurrentPart ? CurrentDisk->ListEntry.Flink
                                      : List->DiskListHead.Flink);
         DiskListEntry != &List->DiskListHead;
         DiskListEntry = DiskListEntry->Flink)
    {
        CurrentDisk = CONTAINING_RECORD(DiskListEntry, DISKENTRY, ListEntry);
 
        if (CurrentDisk->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        PartListEntry = CurrentDisk->PrimaryPartListHead.Flink;
        if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
        {
            CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
            return CurrentPart;
        }
    }
 
    return NULL;
}

Referenced by ScrollUpDownPartitionList().

GetPartition()

PPARTENTRY GetPartition	(	_In_ PDISKENTRY	DiskEntry,
		_In_ ULONG	PartitionNumber
	)

Definition at line 2292 of file partlist.c.

{
    PPARTENTRY PartEntry;
    PLIST_ENTRY Entry;
 
    /* Forbid whole-disk or extended container partition access */
    if (PartitionNumber == 0)
        return NULL;
 
    /* Loop over the primary partitions first... */
    for (Entry = DiskEntry->PrimaryPartListHead.Flink;
         Entry != &DiskEntry->PrimaryPartListHead;
         Entry = Entry->Flink)
    {
        PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
        if (PartEntry->PartitionNumber == PartitionNumber)
            return PartEntry; /* Partition found, return it */
    }
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        return NULL;
 
    /* ... then over the logical partitions if needed */
    for (Entry = DiskEntry->LogicalPartListHead.Flink;
         Entry != &DiskEntry->LogicalPartListHead;
         Entry = Entry->Flink)
    {
        PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
        if (PartEntry->PartitionNumber == PartitionNumber)
            return PartEntry; /* Partition found, return it */
    }
 
    /* The partition was not found on the disk, stop there */
    return NULL;
}

Referenced by ResolveArcNameManually(), and SelectPartition().

GetPrevPartition()

PPARTENTRY NTAPI GetPrevPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2452 of file partlist.c.

{
    PLIST_ENTRY DiskListEntry;
    PLIST_ENTRY PartListEntry;
    PDISKENTRY CurrentDisk;
 
    /* Fail if no disks are available */
    if (IsListEmpty(&List->DiskListHead))
        return NULL;
 
    /* Check for the previous usable entry on the current partition's disk */
    if (CurrentPart != NULL)
    {
        CurrentDisk = CurrentPart->DiskEntry;
 
        if (CurrentPart->LogicalPartition)
        {
            /* Logical partition */
 
            PartListEntry = CurrentPart->ListEntry.Blink;
            if (PartListEntry != &CurrentDisk->LogicalPartListHead)
            {
                /* Previous logical partition */
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
            }
            else
            {
                /* Extended partition */
                CurrentPart = CurrentDisk->ExtendedPartition;
            }
            return CurrentPart;
        }
        else
        {
            /* Primary or extended partition */
 
            PartListEntry = CurrentPart->ListEntry.Blink;
            if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
            {
                CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
 
                if (CurrentPart->IsPartitioned &&
                    IsContainerPartition(CurrentPart->PartitionType))
                {
                    PartListEntry = CurrentDisk->LogicalPartListHead.Blink;
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                }
 
                return CurrentPart;
            }
        }
    }
 
    /* Search for the last partition entry on the previous disk */
    for (DiskListEntry = (CurrentPart ? CurrentDisk->ListEntry.Blink
                                      : List->DiskListHead.Blink);
         DiskListEntry != &List->DiskListHead;
         DiskListEntry = DiskListEntry->Blink)
    {
        CurrentDisk = CONTAINING_RECORD(DiskListEntry, DISKENTRY, ListEntry);
 
        if (CurrentDisk->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        PartListEntry = CurrentDisk->PrimaryPartListHead.Blink;
        if (PartListEntry != &CurrentDisk->PrimaryPartListHead)
        {
            CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
 
            if (CurrentPart->IsPartitioned &&
                IsContainerPartition(CurrentPart->PartitionType))
            {
                PartListEntry = CurrentDisk->LogicalPartListHead.Blink;
                if (PartListEntry != &CurrentDisk->LogicalPartListHead)
                {
                    CurrentPart = CONTAINING_RECORD(PartListEntry, PARTENTRY, ListEntry);
                    return CurrentPart;
                }
            }
            else
            {
                return CurrentPart;
            }
        }
    }
 
    return NULL;
}

Referenced by ScrollUpDownPartitionList().

IsDiskSuperFloppy()

BOOLEAN IsDiskSuperFloppy	(	_In_ const DRIVE_LAYOUT_INFORMATION *	Layout,
		_In_opt_ const ULONGLONG *	DiskSize
	)

Definition at line 544 of file partlist.c.

{
    DISK_PARTITION_INFO DiskInfo;
 
    /* The layout must contain only one partition */
    if (Layout->PartitionCount != 1)
        return FALSE;
 
    /* Build the disk partition info */
    DiskInfo.SizeOfPartitionInfo = RTL_SIZEOF_THROUGH_FIELD(DISK_PARTITION_INFO, Mbr);
    DiskInfo.PartitionStyle = PARTITION_STYLE_MBR;
    DiskInfo.Mbr.Signature = Layout->Signature;
    DiskInfo.Mbr.CheckSum = 0; // Dummy value
 
    /* Call the helper on the single partition entry */
    return IsDiskSuperFloppy2(&DiskInfo, DiskSize, Layout->PartitionEntry);
}

Referenced by IsSuperFloppy().

IsDiskSuperFloppy2()

BOOLEAN IsDiskSuperFloppy2	(	_In_ const DISK_PARTITION_INFO *	DiskInfo,
		_In_opt_ const ULONGLONG *	DiskSize,
		_In_ const PARTITION_INFORMATION *	PartitionInfo
	)

Definition at line 493 of file partlist.c.

{
    /* Structure size must be valid */
    if (DiskInfo->SizeOfPartitionInfo < RTL_SIZEOF_THROUGH_FIELD(DISK_PARTITION_INFO, Mbr))
        return FALSE;
 
    /* The layout must be MBR */
    if (DiskInfo->PartitionStyle != PARTITION_STYLE_MBR)
        return FALSE;
 
    /* The single partition must start at the beginning of the disk */
    if (!(PartitionInfo->StartingOffset.QuadPart == 0 &&
          PartitionInfo->HiddenSectors == 0))
    {
        return FALSE;
    }
 
    /* The disk signature is usually set to 1; warn in case it's not */
    if (DiskInfo->Mbr.Signature != 1)
    {
        DPRINT1("Super-Floppy signature %08x != 1\n", DiskInfo->Mbr.Signature);
    }
 
    /* The partition must be recognized and report as FAT16 non-bootable */
    if ((PartitionInfo->RecognizedPartition != TRUE) ||
        (PartitionInfo->PartitionType != PARTITION_FAT_16) ||
        (PartitionInfo->BootIndicator != FALSE))
    {
        DPRINT1("Super-Floppy does not return default settings:\n"
                "    RecognizedPartition = %s, expected TRUE\n"
                "    PartitionType = 0x%02x, expected 0x04 (PARTITION_FAT_16)\n"
                "    BootIndicator = %s, expected FALSE\n",
                PartitionInfo->RecognizedPartition ? "TRUE" : "FALSE",
                PartitionInfo->PartitionType,
                PartitionInfo->BootIndicator ? "TRUE" : "FALSE");
    }
 
    /* The partition and disk sizes should agree */
    if (DiskSize && (PartitionInfo->PartitionLength.QuadPart != *DiskSize))
    {
        DPRINT1("PartitionLength = %I64u is different from DiskSize = %I64u\n",
                PartitionInfo->PartitionLength.QuadPart, *DiskSize);
    }
 
    return TRUE;
}

Referenced by InstallBootManagerAndBootEntries(), IsDiskSuperFloppy(), and IsDiskSuperFloppyEx().

IsDiskSuperFloppyEx()

BOOLEAN IsDiskSuperFloppyEx	(	_In_ const DRIVE_LAYOUT_INFORMATION_EX *	LayoutEx,
		_In_opt_ const ULONGLONG *	DiskSize
	)

Definition at line 565 of file partlist.c.

{
    DISK_PARTITION_INFO DiskInfo;
    const PARTITION_INFORMATION_EX* PartitionInfoEx;
    PARTITION_INFORMATION PartitionInfo;
 
    /* The layout must be MBR and contain only one partition */
    if (LayoutEx->PartitionStyle != PARTITION_STYLE_MBR)
        return FALSE;
    if (LayoutEx->PartitionCount != 1)
        return FALSE;
 
    /* Build the disk partition info */
    DiskInfo.SizeOfPartitionInfo = RTL_SIZEOF_THROUGH_FIELD(DISK_PARTITION_INFO, Mbr);
    DiskInfo.PartitionStyle = PARTITION_STYLE_MBR; // LayoutEx->PartitionStyle;
    DiskInfo.Mbr.Signature = LayoutEx->Mbr.Signature;
    DiskInfo.Mbr.CheckSum = 0; // Dummy value
 
    /* Convert the single partition entry */
    PartitionInfoEx = LayoutEx->PartitionEntry;
 
    PartitionInfo.StartingOffset = PartitionInfoEx->StartingOffset;
    PartitionInfo.PartitionLength = PartitionInfoEx->PartitionLength;
    PartitionInfo.HiddenSectors = PartitionInfoEx->Mbr.HiddenSectors;
    PartitionInfo.PartitionNumber = PartitionInfoEx->PartitionNumber;
    PartitionInfo.PartitionType = PartitionInfoEx->Mbr.PartitionType;
    PartitionInfo.BootIndicator = PartitionInfoEx->Mbr.BootIndicator;
    PartitionInfo.RecognizedPartition = PartitionInfoEx->Mbr.RecognizedPartition;
    PartitionInfo.RewritePartition = PartitionInfoEx->RewritePartition;
 
    /* Call the helper on the single partition entry */
    return IsDiskSuperFloppy2(&DiskInfo, DiskSize, &PartitionInfo);
}

IsPartitionActive()

BOOLEAN IsPartitionActive

(

IN PPARTENTRY

PartEntry

)

Definition at line 1962 of file partlist.c.

{
    // TODO: Support for GPT disks!
 
    if (IsContainerPartition(PartEntry->PartitionType))
        return FALSE;
 
    /* Check if the partition is partitioned, used and active */
    if (PartEntry->IsPartitioned &&
        // !IsContainerPartition(PartEntry->PartitionType) &&
        PartEntry->BootIndicator)
    {
        /* Yes it is */
        ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
        return TRUE;
    }
 
    return FALSE;
}

Referenced by GetActiveDiskPartition(), SelectPartitionPage(), and SetActivePartition().

IsSuperFloppy()

BOOLEAN IsSuperFloppy

(

_In_ PDISKENTRY

DiskEntry

)

Definition at line 602 of file partlist.c.

{
    ULONGLONG DiskSize;
 
    /* No layout buffer: we cannot say anything yet */
    if (!DiskEntry->LayoutBuffer)
        return FALSE;
 
    /* The disk must be MBR */
    if (DiskEntry->DiskStyle != PARTITION_STYLE_MBR)
        return FALSE;
 
    DiskSize = GetDiskSizeInBytes(DiskEntry);
    return IsDiskSuperFloppy(DiskEntry->LayoutBuffer, &DiskSize);
}

Referenced by AddDiskToList(), InstallBootManagerAndBootEntries(), InstallBootManagerAndBootEntriesWorker(), MBRPartitionCreateChecks(), and xHalIoWritePartitionTable().

PartitionCreateChecks()

ERROR_NUMBER NTAPI PartitionCreateChecks	(	_In_ PPARTENTRY	PartEntry,
		_In_opt_ ULONGLONG	SizeBytes,
		_In_opt_ ULONG_PTR	PartitionInfo
	)

Definition at line 2946 of file partlist.c.

{
    // PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    /* Fail if the partition is already in use */
    if (PartEntry->IsPartitioned)
        return ERROR_NEW_PARTITION;
 
    // TODO: Re-enable once we initialize unpartitioned disks before
    // using them; because such disks would be mistook as GPT otherwise.
    // if (DiskEntry->DiskStyle == PARTITION_STYLE_MBR)
    return MBRPartitionCreateChecks(PartEntry, SizeBytes, PartitionInfo);
#if 0
    else // if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return ERROR_WARN_PARTITION;
    }
#endif
}

Referenced by CreatePartition(), DriveDlgProc(), and SelectPartitionPage().

RoundingDivide()

ULONGLONG RoundingDivide	(	IN ULONGLONG	Dividend,
		IN ULONGLONG	Divisor
	)

Definition at line 97 of file partlist.c.

{
    return (Dividend + Divisor / 2) / Divisor;
}

Referenced by CreatePartitionPage(), DriveDlgProc(), IsMediumLargeEnough(), PrettifySize1(), PrettifySize2(), PrintSize(), and ShowFileSystemInfo().

SelectPartition()

PPARTENTRY SelectPartition	(	_In_ PPARTLIST	List,
		_In_ ULONG	DiskNumber,
		_In_ ULONG	PartitionNumber
	)

Definition at line 2333 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PPARTENTRY PartEntry;
 
    /* Find the disk */
    DiskEntry = GetDiskByNumber(List, DiskNumber);
    if (!DiskEntry)
        return NULL;
    ASSERT(DiskEntry->DiskNumber == DiskNumber);
 
    /* Find the partition */
    PartEntry = GetPartition(DiskEntry, PartitionNumber);
    if (!PartEntry)
        return NULL;
    ASSERT(PartEntry->DiskEntry == DiskEntry);
    ASSERT(PartEntry->PartitionNumber == PartitionNumber);
 
    return PartEntry;
}

Referenced by EnumerateInstallations(), and SelectPartitionPage().

SetActivePartition()

BOOLEAN SetActivePartition	(	IN PPARTLIST	List,
		IN PPARTENTRY	PartEntry,
		IN PPARTENTRY OldActivePart	OPTIONAL
	)

Definition at line 3603 of file partlist.c.

{
    /* Check for empty disk list */
    if (IsListEmpty(&List->DiskListHead))
        return FALSE;
 
    /* Validate the partition entry */
    if (!PartEntry)
        return FALSE;
 
    /*
     * If the partition entry is already the system partition, or if it is
     * the same as the old active partition hint the user provided (and if
     * it is already active), just return success.
     */
    if ((PartEntry == List->SystemPartition) ||
        ((PartEntry == OldActivePart) && IsPartitionActive(OldActivePart)))
    {
        return TRUE;
    }
 
    ASSERT(PartEntry->DiskEntry);
 
    /* Ensure that the partition's disk is in the list */
    ASSERT(PartEntry->DiskEntry->PartList == List);
 
    /*
     * If the user provided an old active partition hint, verify that it is
     * indeed active and belongs to the same disk where the new partition
     * belongs. Otherwise determine the current active partition on the disk
     * where the new partition belongs.
     */
    if (!(OldActivePart && IsPartitionActive(OldActivePart) && (OldActivePart->DiskEntry == PartEntry->DiskEntry)))
    {
        /* It's not, determine the current active partition for the disk */
        OldActivePart = GetActiveDiskPartition(PartEntry->DiskEntry);
    }
 
    /* Unset the old active partition if it exists */
    if (OldActivePart)
    {
        OldActivePart->BootIndicator = FALSE;
        OldActivePart->DiskEntry->LayoutBuffer->PartitionEntry[OldActivePart->PartitionIndex].BootIndicator = FALSE;
        OldActivePart->DiskEntry->LayoutBuffer->PartitionEntry[OldActivePart->PartitionIndex].RewritePartition = TRUE;
        OldActivePart->DiskEntry->Dirty = TRUE;
    }
 
    /* Modify the system partition if the new partition is on the system disk */
    if (PartEntry->DiskEntry == GetSystemDisk(List))
        List->SystemPartition = PartEntry;
 
    /* Set the new active partition */
    PartEntry->BootIndicator = TRUE;
    PartEntry->DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].BootIndicator = TRUE;
    PartEntry->DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RewritePartition = TRUE;
    PartEntry->DiskEntry->Dirty = TRUE;
 
    return TRUE;
}

Referenced by InitSystemPartition().

SetMBRPartitionType()

VOID SetMBRPartitionType	(	IN PPARTENTRY	PartEntry,
		IN UCHAR	PartitionType
	)

Definition at line 3991 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    ASSERT(DiskEntry->DiskStyle == PARTITION_STYLE_MBR);
 
    /* Nothing to do if we assign the same type */
    if (PartitionType == PartEntry->PartitionType)
        return;
 
    // TODO: We might need to remount the associated basic volume...
 
    PartEntry->PartitionType = PartitionType;
 
    DiskEntry->Dirty = TRUE;
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].PartitionType = PartitionType;
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RecognizedPartition = IsRecognizedPartition(PartitionType);
    DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex].RewritePartition = TRUE;
}

Referenced by FormatPartition().

SetMountedDeviceValues()

BOOLEAN SetMountedDeviceValues

(

_In_ PPARTLIST

List

)

Definition at line 3967 of file partlist.c.

{
    PLIST_ENTRY Entry;
    PVOLENTRY Volume;
 
    if (!List)
        return FALSE;
 
    for (Entry = List->VolumesList.Flink;
         Entry != &List->VolumesList;
         Entry = Entry->Flink)
    {
        Volume = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
 
        /* Assign a "\DosDevices\#:" mount point to this volume */
        if (!SetMountedDeviceValue(Volume))
            return FALSE;
    }
 
    return TRUE;
}

Referenced by UpdateRegistry().

WritePartitions()

NTSTATUS WritePartitions

(

IN PDISKENTRY

DiskEntry

)

Definition at line 3667 of file partlist.c.

{
    NTSTATUS Status;
    OBJECT_ATTRIBUTES ObjectAttributes;
    UNICODE_STRING Name;
    HANDLE FileHandle;
    IO_STATUS_BLOCK Iosb;
    ULONG BufferSize;
    PPARTITION_INFORMATION PartitionInfo;
    ULONG PartitionCount;
    PLIST_ENTRY ListEntry;
    PPARTENTRY PartEntry;
    WCHAR DstPath[MAX_PATH];
 
    DPRINT("WritePartitions() Disk: %lu\n", DiskEntry->DiskNumber);
 
    /* If the disk is not dirty, there is nothing to do */
    if (!DiskEntry->Dirty)
        return STATUS_SUCCESS;
 
    RtlStringCchPrintfW(DstPath, ARRAYSIZE(DstPath),
                        L"\\Device\\Harddisk%lu\\Partition0",
                        DiskEntry->DiskNumber);
    RtlInitUnicodeString(&Name, DstPath);
 
    InitializeObjectAttributes(&ObjectAttributes,
                               &Name,
                               OBJ_CASE_INSENSITIVE,
                               NULL,
                               NULL);
 
    Status = NtOpenFile(&FileHandle,
                        GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
                        &ObjectAttributes,
                        &Iosb,
                        0,
                        FILE_SYNCHRONOUS_IO_NONALERT);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtOpenFile() failed (Status %lx)\n", Status);
        return Status;
    }
 
#ifdef DUMP_PARTITION_TABLE
    DumpPartitionTable(DiskEntry);
#endif
 
    //
    // FIXME: We first *MUST* use IOCTL_DISK_CREATE_DISK to initialize
    // the disk in MBR or GPT format in case the disk was not initialized!!
    // For this we must ask the user which format to use.
    //
 
    /* Save the original partition count to be restored later (see comment below) */
    PartitionCount = DiskEntry->LayoutBuffer->PartitionCount;
 
    /* Set the new disk layout and retrieve its updated version with
     * new partition numbers for the new partitions. The PARTMGR will
     * automatically notify the MOUNTMGR of new or deleted volumes. */
    BufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
                 ((PartitionCount - 1) * sizeof(PARTITION_INFORMATION));
    Status = NtDeviceIoControlFile(FileHandle,
                                   NULL,
                                   NULL,
                                   NULL,
                                   &Iosb,
                                   IOCTL_DISK_SET_DRIVE_LAYOUT,
                                   DiskEntry->LayoutBuffer,
                                   BufferSize,
                                   DiskEntry->LayoutBuffer,
                                   BufferSize);
    NtClose(FileHandle);
 
    /*
     * IOCTL_DISK_SET_DRIVE_LAYOUT calls IoWritePartitionTable(), which converts
     * DiskEntry->LayoutBuffer->PartitionCount into a partition *table* count,
     * where such a table is expected to enumerate up to 4 partitions:
     * partition *table* count == ROUND_UP(PartitionCount, 4) / 4 .
     * Due to this we need to restore the original PartitionCount number.
     */
    DiskEntry->LayoutBuffer->PartitionCount = PartitionCount;
 
    /* Check whether the IOCTL_DISK_SET_DRIVE_LAYOUT call succeeded */
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("IOCTL_DISK_SET_DRIVE_LAYOUT failed (Status 0x%08lx)\n", Status);
        return Status;
    }
 
#ifdef DUMP_PARTITION_TABLE
    DumpPartitionTable(DiskEntry);
#endif
 
    /* Update the partition numbers and device names */
 
    /* Update the primary partition table */
    for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
         ListEntry != &DiskEntry->PrimaryPartListHead;
         ListEntry = ListEntry->Flink)
    {
        PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
        if (!PartEntry->IsPartitioned)
            continue;
        ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
        /*
         * Initialize the partition's number and its device name only
         * if the partition was new. Note that the partition number
         * should not change if this partition has not been deleted
         * during repartitioning.
         */
        // FIXME: Our PartMgr currently returns modified numbers
        // in the layout, this needs to be investigated and fixed.
        if (PartEntry->New)
        {
            PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
            PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
            InitPartitionDeviceName(PartEntry);
        }
        PartEntry->New = FALSE;
    }
 
    /* Update the logical partition table */
    for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
         ListEntry != &DiskEntry->LogicalPartListHead;
         ListEntry = ListEntry->Flink)
    {
        PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
        if (!PartEntry->IsPartitioned)
            continue;
        ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
        /* See comment above */
        if (PartEntry->New)
        {
            PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
            PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
            InitPartitionDeviceName(PartEntry);
        }
        PartEntry->New = FALSE;
    }
 
    //
    // NOTE: Originally (see r40437), we used to install here also a new MBR
    // for this disk (by calling InstallMbrBootCodeToDisk), only if:
    // DiskEntry->NewDisk == TRUE and DiskEntry->HwDiskNumber == 0.
    // Then after that, both DiskEntry->NewDisk and DiskEntry->NoMbr were set
    // to FALSE. In the other place (in usetup.c) where InstallMbrBootCodeToDisk
    // was called too, the installation test was modified by checking whether
    // DiskEntry->NoMbr was TRUE (instead of NewDisk).
    //
 
    // HACK: Parts of FIXMEs described above: (Re)set the PartitionStyle to MBR.
    DiskEntry->DiskStyle = PARTITION_STYLE_MBR;
 
    /* The layout has been successfully updated, the disk is not dirty anymore */
    DiskEntry->Dirty = FALSE;
 
    return Status;
}

Referenced by FormatPartition(), and WritePartitionsToDisk().

WritePartitionsToDisk()

BOOLEAN WritePartitionsToDisk

(

IN PPARTLIST

List

)

Definition at line 3830 of file partlist.c.

{
    NTSTATUS Status;
    PLIST_ENTRY Entry;
    PDISKENTRY DiskEntry;
    PVOLENTRY Volume;
 
    if (!List)
        return TRUE;
 
    /* Unmount all the pending volumes */
    Status = STATUS_SUCCESS;
    while (!IsListEmpty(&List->PendingUnmountVolumesList))
    {
        NTSTATUS UnmountStatus;
        Entry = RemoveHeadList(&List->PendingUnmountVolumesList);
        Volume = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
        UnmountStatus = DismountVolume(&Volume->Info, TRUE);
        if (!NT_SUCCESS(UnmountStatus))
            Status = UnmountStatus;
        RtlFreeHeap(ProcessHeap, 0, Volume);
    }
    if (!NT_SUCCESS(Status))
        return FALSE;
 
    /* Write all the partitions to all the disks */
    for (Entry = List->DiskListHead.Flink;
         Entry != &List->DiskListHead;
         Entry = Entry->Flink)
    {
        DiskEntry = CONTAINING_RECORD(Entry, DISKENTRY, ListEntry);
 
        if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
        {
            DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n");
            continue;
        }
 
        if (DiskEntry->Dirty != FALSE)
        {
            Status = WritePartitions(DiskEntry);
            if (!NT_SUCCESS(Status))
            {
                DPRINT1("WritePartitionsToDisk() failed to update disk %lu, Status 0x%08lx\n",
                        DiskEntry->DiskNumber, Status);
            }
        }
    }
 
    /* The PARTMGR should have notified the MOUNTMGR that new volumes
     * associated with the new partitions had to be created */
 
    /* Assign valid device names to new volumes */
    for (Entry = List->VolumesList.Flink;
         Entry != &List->VolumesList;
         Entry = Entry->Flink)
    {
        Volume = CONTAINING_RECORD(Entry, VOLENTRY, ListEntry);
        InitVolumeDeviceName(Volume, NULL);
    }
 
    return TRUE;
}

Referenced by FsVolCommitOpsQueue().