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

Include dependency graph for partlist.h:

This graph shows which files directly or indirectly include this file:

Classes
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 _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 , Preformatted , 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	IsSuperFloppy (IN PDISKENTRY DiskEntry)

BOOLEAN	IsPartitionActive (IN PPARTENTRY PartEntry)

PPARTLIST	CreatePartitionList (VOID)

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

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

ERROR_NUMBER	PartitionCreationChecks (_In_ PPARTENTRY PartEntry)

ERROR_NUMBER	ExtendedPartitionCreationChecks (_In_ PPARTENTRY PartEntry)

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

NTSTATUS	DismountVolume (IN PPARTENTRY PartEntry)

BOOLEAN	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	SetMountedDeviceValue (IN WCHAR Letter, IN ULONG Signature, IN LARGE_INTEGER StartingOffset)

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 172 of file partlist.h.

◆ GetDiskSizeInBytes

#define GetDiskSizeInBytes ( DiskEntry ) ((DiskEntry)->SectorCount.QuadPart * (DiskEntry)->BytesPerSector)

Definition at line 233 of file partlist.h.

◆ GetPartEntryOffsetInBytes

#define GetPartEntryOffsetInBytes ( PartEntry ) ((PartEntry)->StartSector.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)

Definition at line 227 of file partlist.h.

◆ GetPartEntrySizeInBytes

#define GetPartEntrySizeInBytes ( PartEntry ) ((PartEntry)->SectorCount.QuadPart * (PartEntry)->DiskEntry->BytesPerSector)

Definition at line 230 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 169 of file partlist.h.

◆ PARTITION_TBL_SIZE

#define PARTITION_TBL_SIZE 4

Definition at line 167 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

◆ 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

◆ PPARTITION

typedef struct _PARTITION * PPARTITION

◆ PPARTITION_SECTOR

typedef struct _PARTITION_SECTOR * PPARTITION_SECTOR

◆ PPARTLIST

typedef struct _PARTLIST * PPARTLIST

Enumeration Type Documentation

◆ _FORMATSTATE

enum _FORMATSTATE

Enumerator
Unformatted
UnformattedOrDamaged
UnknownFormat
Preformatted
Formatted
Unformatted
UnformattedOrDamaged
UnknownFormat
Preformatted
Formatted

Definition at line 32 of file partlist.h.

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

Function Documentation

◆ AlignDown()

ULONGLONG AlignDown	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 67 of file partlist.c.

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

Referenced by InitializePartitionEntry(), and ScanForUnpartitionedDiskSpace().

◆ AlignUp()

ULONGLONG AlignUp	(	IN ULONGLONG	Value,
		IN ULONG	Alignment
	)

Definition at line 79 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 CreatePartition	(	_In_ PPARTLIST	List,
		_Inout_ PPARTENTRY	PartEntry,
		_In_opt_ ULONGLONG	SizeBytes,
		_In_opt_ ULONG_PTR	PartitionInfo
	)

Definition at line 2844 of file partlist.c.

{
    ERROR_NUMBER Error;
    BOOLEAN isContainer = IsContainerPartition((UCHAR)PartitionInfo);
    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;
    }
 
    if (isContainer)
        Error = ExtendedPartitionCreationChecks(PartEntry);
    else
        Error = PartitionCreationChecks(PartEntry);
    if (Error != NOT_AN_ERROR)
    {
        DPRINT1("PartitionCreationChecks(%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;
 
    if (isContainer)
    {
        // FIXME? Possibly to make GetNextUnformattedPartition work (i.e. skip the extended partition container)
        PartEntry->New = FALSE;
        PartEntry->FormatState = Formatted;
    }
 
    UpdateDiskLayout(PartEntry->DiskEntry);
    AssignDriveLetters(List);
 
    return TRUE;
}

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

◆ CreatePartitionList()

PPARTLIST CreatePartitionList ( VOID )

Definition at line 1923 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 == NULL)
        return NULL;
 
    List->SystemPartition = NULL;
 
    InitializeListHead(&List->DiskListHead);
    InitializeListHead(&List->BiosDiskListHead);
 
    /*
     * 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 DeletePartition	(	_In_ PPARTLIST	List,
		_In_ PPARTENTRY	PartEntry,
		_Out_opt_ PPARTENTRY *	FreeRegion
	)

Definition at line 3002 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->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 */
            DismountVolume(LogicalPartEntry);
 
            /* Delete it */
            RtlFreeHeap(ProcessHeap, 0, LogicalPartEntry);
        }
 
        DiskEntry->ExtendedPartition = NULL;
    }
    else
    {
        /* A primary partition is being deleted: dismount it */
        DismountVolume(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);
        RtlFreeHeap(ProcessHeap, 0, PartEntry);
        RemoveEntryList(&NextPartEntry->ListEntry);
        RtlFreeHeap(ProcessHeap, 0, 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);
        RtlFreeHeap(ProcessHeap, 0, 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);
        RtlFreeHeap(ProcessHeap, 0, PartEntry);
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = NextPartEntry;
    }
    else
    {
        /* Nothing to merge but change the current entry */
        PartEntry->IsPartitioned = FALSE;
        PartEntry->OnDiskPartitionNumber = 0;
        PartEntry->PartitionNumber = 0;
        // PartEntry->PartitionIndex = 0;
        PartEntry->BootIndicator = FALSE;
        PartEntry->PartitionType = PARTITION_ENTRY_UNUSED;
        PartEntry->FormatState = Unformatted;
        PartEntry->FileSystem[0] = L'\0';
        PartEntry->DriveLetter = 0;
        RtlZeroMemory(PartEntry->VolumeLabel, sizeof(PartEntry->VolumeLabel));
 
        /* Optionally return the freed region */
        if (FreeRegion)
            *FreeRegion = PartEntry;
    }
 
    UpdateDiskLayout(DiskEntry);
    AssignDriveLetters(List);
 
    return TRUE;
}

Referenced by DeletePartitionPage().

◆ DestroyPartitionList()

VOID DestroyPartitionList ( IN PPARTLIST List )

Definition at line 2007 of file partlist.c.

{
    PDISKENTRY DiskEntry;
    PBIOSDISKENTRY BiosDiskEntry;
    PPARTENTRY PartEntry;
    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);
 
            RtlFreeHeap(ProcessHeap, 0, PartEntry);
        }
 
        /* Release logical partition list */
        while (!IsListEmpty(&DiskEntry->LogicalPartListHead))
        {
            Entry = RemoveHeadList(&DiskEntry->LogicalPartListHead);
            PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
 
            RtlFreeHeap(ProcessHeap, 0, 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 list head */
    RtlFreeHeap(ProcessHeap, 0, List);
}

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

◆ DismountVolume()

NTSTATUS DismountVolume ( IN PPARTENTRY PartEntry )

Definition at line 2895 of file partlist.c.

{
    NTSTATUS Status;
    NTSTATUS LockStatus;
    UNICODE_STRING Name;
    OBJECT_ATTRIBUTES ObjectAttributes;
    IO_STATUS_BLOCK IoStatusBlock;
    HANDLE PartitionHandle;
    WCHAR Buffer[MAX_PATH];
 
    /* Check whether the partition is valid and was mounted by the system */
    if (!PartEntry->IsPartitioned ||
        IsContainerPartition(PartEntry->PartitionType)   ||
        !IsRecognizedPartition(PartEntry->PartitionType) ||
        PartEntry->FormatState == UnknownFormat ||
        // NOTE: If FormatState == Unformatted but *FileSystem != 0 this means
        // it has been usually mounted with RawFS and thus needs to be dismounted.
        !*PartEntry->FileSystem ||
        PartEntry->PartitionNumber == 0)
    {
        /* The partition is not mounted, so just return success */
        return STATUS_SUCCESS;
    }
 
    ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
 
    /* Open the volume */
    RtlStringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
                        L"\\Device\\Harddisk%lu\\Partition%lu",
                        PartEntry->DiskEntry->DiskNumber,
                        PartEntry->PartitionNumber);
    RtlInitUnicodeString(&Name, Buffer);
 
    InitializeObjectAttributes(&ObjectAttributes,
                               &Name,
                               OBJ_CASE_INSENSITIVE,
                               NULL,
                               NULL);
 
    Status = NtOpenFile(&PartitionHandle,
                        GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
                        &ObjectAttributes,
                        &IoStatusBlock,
                        FILE_SHARE_READ | FILE_SHARE_WRITE,
                        FILE_SYNCHRONOUS_IO_NONALERT);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("ERROR: Cannot open volume %wZ for dismounting! (Status 0x%lx)\n", &Name, Status);
        return Status;
    }
 
    /* Lock the volume */
    LockStatus = NtFsControlFile(PartitionHandle,
                                 NULL,
                                 NULL,
                                 NULL,
                                 &IoStatusBlock,
                                 FSCTL_LOCK_VOLUME,
                                 NULL,
                                 0,
                                 NULL,
                                 0);
    if (!NT_SUCCESS(LockStatus))
    {
        DPRINT1("WARNING: Failed to lock volume! Operations may fail! (Status 0x%lx)\n", LockStatus);
    }
 
    /* Dismount the volume */
    Status = NtFsControlFile(PartitionHandle,
                             NULL,
                             NULL,
                             NULL,
                             &IoStatusBlock,
                             FSCTL_DISMOUNT_VOLUME,
                             NULL,
                             0,
                             NULL,
                             0);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("Failed to unmount volume (Status 0x%lx)\n", Status);
    }
 
    /* Unlock the volume */
    LockStatus = NtFsControlFile(PartitionHandle,
                                 NULL,
                                 NULL,
                                 NULL,
                                 &IoStatusBlock,
                                 FSCTL_UNLOCK_VOLUME,
                                 NULL,
                                 0,
                                 NULL,
                                 0);
    if (!NT_SUCCESS(LockStatus))
    {
        DPRINT1("Failed to unlock volume (Status 0x%lx)\n", LockStatus);
    }
 
    /* Close the volume */
    NtClose(PartitionHandle);
 
    return Status;
}

Referenced by AddPartitionToDisk(), clean_main(), and DeletePartition().

◆ ExtendedPartitionCreationChecks()

ERROR_NUMBER ExtendedPartitionCreationChecks ( _In_ PPARTENTRY PartEntry )

Definition at line 2806 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return ERROR_WARN_PARTITION;
    }
 
    /* Fail if the partition is already in use */
    if (PartEntry->IsPartitioned)
        return ERROR_NEW_PARTITION;
 
    /* Cannot create an extended partition within logical partition space */
    if (PartEntry->LogicalPartition)
        return ERROR_ONLY_ONE_EXTENDED;
 
    /* Only one primary partition is allowed on super-floppy */
    if (IsSuperFloppy(DiskEntry))
        return ERROR_PARTITION_TABLE_FULL;
 
    /* Fail if there are already 4 primary partitions in the list */
    if (GetPrimaryPartitionCount(DiskEntry) >= 4)
        return ERROR_PARTITION_TABLE_FULL;
 
    /* Fail if there is another extended partition in the list */
    if (DiskEntry->ExtendedPartition)
        return ERROR_ONLY_ONE_EXTENDED;
 
    return ERROR_SUCCESS;
}

Referenced by CreatePartition(), and SelectPartitionPage().

◆ FindSupportedSystemPartition()

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

Definition at line 3215 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->DriveLetter == 0) ? L'-' : CandidatePartition->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->DriveLetter == 0) ? L'-' : CandidatePartition->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->DriveLetter == 0) ? L'-' : CandidatePartition->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->DriveLetter == 0) ? L'-' : CandidatePartition->DriveLetter);
 
    /* Return the candidate system partition */
    return CandidatePartition;
}

Referenced by InitSystemPartition().

◆ GetDiskByBiosNumber()

PDISKENTRY GetDiskByBiosNumber	(	_In_ PPARTLIST	List,
		_In_ ULONG	HwDiskNumber
	)

Definition at line 2064 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 2087 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 2110 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 2140 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 GetNextPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2229 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 2163 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 GetPrevPartition	(	IN PPARTLIST	List,
		IN PPARTENTRY CurrentPart	OPTIONAL
	)

Definition at line 2321 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().

◆ IsPartitionActive()

BOOLEAN IsPartitionActive ( IN PPARTENTRY PartEntry )

Definition at line 1844 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 501 of file partlist.c.

{
    PPARTITION_INFORMATION PartitionInfo;
    ULONGLONG PartitionLengthEstimate;
 
    /* No layout buffer: we cannot say anything yet */
    if (DiskEntry->LayoutBuffer == NULL)
        return FALSE;
 
    /* We must have only one partition */
    if (DiskEntry->LayoutBuffer->PartitionCount != 1)
        return FALSE;
 
    /* Get the single partition entry */
    PartitionInfo = DiskEntry->LayoutBuffer->PartitionEntry;
 
    /* 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 one; warn in case it's not */
    if (DiskEntry->LayoutBuffer->Signature != 1)
    {
        DPRINT1("Super-Floppy disk %lu signature %08x != 1!\n",
                DiskEntry->DiskNumber, DiskEntry->LayoutBuffer->Signature);
    }
 
    /*
     * The partition number must be zero or one, be recognized,
     * have FAT16 type and report as non-bootable.
     */
    if ((PartitionInfo->PartitionNumber != 0 &&
         PartitionInfo->PartitionNumber != 1) ||
        PartitionInfo->RecognizedPartition != TRUE ||
        PartitionInfo->PartitionType != PARTITION_FAT_16 ||
        PartitionInfo->BootIndicator != FALSE)
    {
        DPRINT1("Super-Floppy disk %lu does not return default settings!\n"
                "    PartitionNumber = %lu, expected 0\n"
                "    RecognizedPartition = %s, expected TRUE\n"
                "    PartitionType = 0x%02x, expected 0x04 (PARTITION_FAT_16)\n"
                "    BootIndicator = %s, expected FALSE\n",
                DiskEntry->DiskNumber,
                PartitionInfo->PartitionNumber,
                PartitionInfo->RecognizedPartition ? "TRUE" : "FALSE",
                PartitionInfo->PartitionType,
                PartitionInfo->BootIndicator ? "TRUE" : "FALSE");
    }
 
    /* The partition lengths should agree */
    PartitionLengthEstimate = GetDiskSizeInBytes(DiskEntry);
    if (PartitionInfo->PartitionLength.QuadPart != PartitionLengthEstimate)
    {
        DPRINT1("PartitionLength = %I64u is different from PartitionLengthEstimate = %I64u\n",
                PartitionInfo->PartitionLength.QuadPart, PartitionLengthEstimate);
    }
 
    return TRUE;
}

Referenced by AddDiskToList(), BootLoaderHardDiskPage(), ExtendedPartitionCreationChecks(), PartitionCreationChecks(), and xHalIoWritePartitionTable().

◆ PartitionCreationChecks()

ERROR_NUMBER PartitionCreationChecks ( _In_ PPARTENTRY PartEntry )

Definition at line 2761 of file partlist.c.

{
    PDISKENTRY DiskEntry = PartEntry->DiskEntry;
 
    if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT)
    {
        DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n");
        return ERROR_WARN_PARTITION;
    }
 
    /* Fail if the partition is already in use */
    if (PartEntry->IsPartitioned)
        return ERROR_NEW_PARTITION;
 
    /*
     * For primary partitions
     */
    if (!PartEntry->LogicalPartition)
    {
        /* Only one primary partition is allowed on super-floppy */
        if (IsSuperFloppy(DiskEntry))
            return ERROR_PARTITION_TABLE_FULL;
 
        /* Fail if there are already 4 primary partitions in the list */
        if (GetPrimaryPartitionCount(DiskEntry) >= 4)
            return ERROR_PARTITION_TABLE_FULL;
    }
    /*
     * For logical partitions
     */
    else
    {
        // TODO: Check that we are inside an extended partition!!
        // Then the following check will be useless.
 
        /* Only one (primary) partition is allowed on super-floppy */
        if (IsSuperFloppy(DiskEntry))
            return ERROR_PARTITION_TABLE_FULL;
    }
 
    return ERROR_SUCCESS;
}

Referenced by CreatePartition(), and SelectPartitionPage().

◆ RoundingDivide()

ULONGLONG RoundingDivide	(	IN ULONGLONG	Dividend,
		IN ULONGLONG	Divisor
	)

Definition at line 95 of file partlist.c.

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

Referenced by CreatePartitionPage(), IsPartitionLargeEnough(), ListPartition(), PrettifySize1(), PrettifySize2(), PrintDisk(), PrintDiskData(), PrintPartitionData(), and PrintVolume().

◆ SelectPartition()

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

Definition at line 2204 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 3515 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
     * indeeed 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;
}