/* * PROJECT: ReactOS Setup Library * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later) * PURPOSE: Partition list functions * COPYRIGHT: Copyright 2003-2019 Casper S. Hornstrup (chorns@users.sourceforge.net) * Copyright 2018-2024 Hermès Bélusca-Maïto */ #include "precomp.h" #include #include "partlist.h" #include "volutil.h" #include "fsrec.h" // For FileSystemToMBRPartitionType() #include "registry.h" #define NDEBUG #include // #define DUMP_PARTITION_TABLE #include typedef struct _REG_DISK_MOUNT_INFO { ULONG Signature; ULONGLONG StartingOffset; } REG_DISK_MOUNT_INFO, *PREG_DISK_MOUNT_INFO; #include /* FUNCTIONS ****************************************************************/ #ifdef DUMP_PARTITION_TABLE static VOID DumpPartitionTable( PDISKENTRY DiskEntry) { PPARTITION_INFORMATION PartitionInfo; ULONG i; DbgPrint("\n"); DbgPrint("Index Start Length Hidden Nr Type Boot RW\n"); DbgPrint("----- ------------ ------------ ---------- -- ---- ---- --\n"); for (i = 0; i < DiskEntry->LayoutBuffer->PartitionCount; i++) { PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[i]; DbgPrint(" %3lu %12I64u %12I64u %10lu %2lu %2x %c %c\n", i, PartitionInfo->StartingOffset.QuadPart / DiskEntry->BytesPerSector, PartitionInfo->PartitionLength.QuadPart / DiskEntry->BytesPerSector, PartitionInfo->HiddenSectors, PartitionInfo->PartitionNumber, PartitionInfo->PartitionType, PartitionInfo->BootIndicator ? '*': ' ', PartitionInfo->RewritePartition ? 'Y': 'N'); } DbgPrint("\n"); } #endif ULONGLONG AlignDown( IN ULONGLONG Value, IN ULONG Alignment) { ULONGLONG Temp; Temp = Value / Alignment; return Temp * Alignment; } ULONGLONG AlignUp( IN ULONGLONG Value, IN ULONG Alignment) { ULONGLONG Temp, Result; Temp = Value / Alignment; Result = Temp * Alignment; if (Value % Alignment) Result += Alignment; return Result; } ULONGLONG RoundingDivide( IN ULONGLONG Dividend, IN ULONGLONG Divisor) { return (Dividend + Divisor / 2) / Divisor; } static VOID GetDriverName( IN PDISKENTRY DiskEntry) { RTL_QUERY_REGISTRY_TABLE QueryTable[2]; WCHAR KeyName[32]; NTSTATUS Status; RtlInitUnicodeString(&DiskEntry->DriverName, NULL); RtlStringCchPrintfW(KeyName, ARRAYSIZE(KeyName), L"\\Scsi\\Scsi Port %hu", DiskEntry->Port); RtlZeroMemory(&QueryTable, sizeof(QueryTable)); QueryTable[0].Name = L"Driver"; QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT; QueryTable[0].EntryContext = &DiskEntry->DriverName; /* This will allocate DiskEntry->DriverName if needed */ Status = RtlQueryRegistryValues(RTL_REGISTRY_DEVICEMAP, KeyName, QueryTable, NULL, NULL); if (!NT_SUCCESS(Status)) { DPRINT1("RtlQueryRegistryValues() failed (Status %lx)\n", Status); } } static VOID AssignDriveLetters( IN PPARTLIST List) { PDISKENTRY DiskEntry; PPARTENTRY PartEntry; PLIST_ENTRY Entry1; PLIST_ENTRY Entry2; WCHAR Letter; Letter = L'C'; /* Assign drive letters to primary partitions */ for (Entry1 = List->DiskListHead.Flink; Entry1 != &List->DiskListHead; Entry1 = Entry1->Flink) { DiskEntry = CONTAINING_RECORD(Entry1, DISKENTRY, ListEntry); for (Entry2 = DiskEntry->PrimaryPartListHead.Flink; Entry2 != &DiskEntry->PrimaryPartListHead; Entry2 = Entry2->Flink) { PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry); if (!PartEntry->Volume) continue; PartEntry->Volume->Info.DriveLetter = UNICODE_NULL; if (PartEntry->IsPartitioned && !IsContainerPartition(PartEntry->PartitionType) && (IsRecognizedPartition(PartEntry->PartitionType) || PartEntry->SectorCount.QuadPart != 0LL)) { if (Letter <= L'Z') PartEntry->Volume->Info.DriveLetter = Letter++; } } } /* Assign drive letters to logical drives */ for (Entry1 = List->DiskListHead.Flink; Entry1 != &List->DiskListHead; Entry1 = Entry1->Flink) { DiskEntry = CONTAINING_RECORD(Entry1, DISKENTRY, ListEntry); for (Entry2 = DiskEntry->LogicalPartListHead.Flink; Entry2 != &DiskEntry->LogicalPartListHead; Entry2 = Entry2->Flink) { PartEntry = CONTAINING_RECORD(Entry2, PARTENTRY, ListEntry); if (!PartEntry->Volume) continue; PartEntry->Volume->Info.DriveLetter = UNICODE_NULL; if (PartEntry->IsPartitioned && (IsRecognizedPartition(PartEntry->PartitionType) || PartEntry->SectorCount.QuadPart != 0LL)) { if (Letter <= L'Z') PartEntry->Volume->Info.DriveLetter = Letter++; } } } } static NTSTATUS NTAPI DiskIdentifierQueryRoutine( PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext) { PBIOSDISKENTRY BiosDiskEntry = (PBIOSDISKENTRY)Context; UNICODE_STRING NameU; if (ValueType == REG_SZ && ValueLength == 20 * sizeof(WCHAR) && ((PWCHAR)ValueData)[8] == L'-') { NameU.Buffer = (PWCHAR)ValueData; NameU.Length = NameU.MaximumLength = 8 * sizeof(WCHAR); RtlUnicodeStringToInteger(&NameU, 16, &BiosDiskEntry->Checksum); NameU.Buffer = (PWCHAR)ValueData + 9; RtlUnicodeStringToInteger(&NameU, 16, &BiosDiskEntry->Signature); return STATUS_SUCCESS; } return STATUS_UNSUCCESSFUL; } static NTSTATUS NTAPI DiskConfigurationDataQueryRoutine( PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext) { PBIOSDISKENTRY BiosDiskEntry = (PBIOSDISKENTRY)Context; PCM_FULL_RESOURCE_DESCRIPTOR FullResourceDescriptor; PCM_DISK_GEOMETRY_DEVICE_DATA DiskGeometry; ULONG i; if (ValueType != REG_FULL_RESOURCE_DESCRIPTOR || ValueLength < sizeof(CM_FULL_RESOURCE_DESCRIPTOR)) return STATUS_UNSUCCESSFUL; FullResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR)ValueData; /* Hm. Version and Revision are not set on Microsoft Windows XP... */ #if 0 if (FullResourceDescriptor->PartialResourceList.Version != 1 || FullResourceDescriptor->PartialResourceList.Revision != 1) return STATUS_UNSUCCESSFUL; #endif for (i = 0; i < FullResourceDescriptor->PartialResourceList.Count; i++) { if (FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].Type != CmResourceTypeDeviceSpecific || FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize != sizeof(CM_DISK_GEOMETRY_DEVICE_DATA)) continue; DiskGeometry = (PCM_DISK_GEOMETRY_DEVICE_DATA)&FullResourceDescriptor->PartialResourceList.PartialDescriptors[i + 1]; BiosDiskEntry->DiskGeometry = *DiskGeometry; return STATUS_SUCCESS; } return STATUS_UNSUCCESSFUL; } static NTSTATUS NTAPI SystemConfigurationDataQueryRoutine( PWSTR ValueName, ULONG ValueType, PVOID ValueData, ULONG ValueLength, PVOID Context, PVOID EntryContext) { PCM_FULL_RESOURCE_DESCRIPTOR FullResourceDescriptor; PCM_INT13_DRIVE_PARAMETER* Int13Drives = (PCM_INT13_DRIVE_PARAMETER*)Context; ULONG i; if (ValueType != REG_FULL_RESOURCE_DESCRIPTOR || ValueLength < sizeof(CM_FULL_RESOURCE_DESCRIPTOR)) return STATUS_UNSUCCESSFUL; FullResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR)ValueData; /* Hm. Version and Revision are not set on Microsoft Windows XP... */ #if 0 if (FullResourceDescriptor->PartialResourceList.Version != 1 || FullResourceDescriptor->PartialResourceList.Revision != 1) return STATUS_UNSUCCESSFUL; #endif for (i = 0; i < FullResourceDescriptor->PartialResourceList.Count; i++) { if (FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].Type != CmResourceTypeDeviceSpecific || FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize % sizeof(CM_INT13_DRIVE_PARAMETER) != 0) continue; *Int13Drives = (CM_INT13_DRIVE_PARAMETER*)RtlAllocateHeap(ProcessHeap, 0, FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize); if (*Int13Drives == NULL) return STATUS_NO_MEMORY; memcpy(*Int13Drives, &FullResourceDescriptor->PartialResourceList.PartialDescriptors[i + 1], FullResourceDescriptor->PartialResourceList.PartialDescriptors[i].u.DeviceSpecificData.DataSize); return STATUS_SUCCESS; } return STATUS_UNSUCCESSFUL; } static VOID EnumerateBiosDiskEntries( IN PPARTLIST PartList) { RTL_QUERY_REGISTRY_TABLE QueryTable[3]; WCHAR Name[120]; ULONG AdapterCount; ULONG ControllerCount; ULONG DiskCount; NTSTATUS Status; PCM_INT13_DRIVE_PARAMETER Int13Drives; PBIOSDISKENTRY BiosDiskEntry; #define ROOT_NAME L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter" memset(QueryTable, 0, sizeof(QueryTable)); QueryTable[1].Name = L"Configuration Data"; QueryTable[1].QueryRoutine = SystemConfigurationDataQueryRoutine; Int13Drives = NULL; Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System", &QueryTable[1], (PVOID)&Int13Drives, NULL); if (!NT_SUCCESS(Status)) { DPRINT1("Unable to query the 'Configuration Data' key in '\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System', status=%lx\n", Status); return; } for (AdapterCount = 0; ; ++AdapterCount) { RtlStringCchPrintfW(Name, ARRAYSIZE(Name), L"%s\\%lu", ROOT_NAME, AdapterCount); Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, Name, &QueryTable[2], NULL, NULL); if (!NT_SUCCESS(Status)) { break; } RtlStringCchPrintfW(Name, ARRAYSIZE(Name), L"%s\\%lu\\DiskController", ROOT_NAME, AdapterCount); Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, Name, &QueryTable[2], NULL, NULL); if (NT_SUCCESS(Status)) { for (ControllerCount = 0; ; ++ControllerCount) { RtlStringCchPrintfW(Name, ARRAYSIZE(Name), L"%s\\%lu\\DiskController\\%lu", ROOT_NAME, AdapterCount, ControllerCount); Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, Name, &QueryTable[2], NULL, NULL); if (!NT_SUCCESS(Status)) { RtlFreeHeap(ProcessHeap, 0, Int13Drives); return; } RtlStringCchPrintfW(Name, ARRAYSIZE(Name), L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral", ROOT_NAME, AdapterCount, ControllerCount); Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, Name, &QueryTable[2], NULL, NULL); if (NT_SUCCESS(Status)) { QueryTable[0].Name = L"Identifier"; QueryTable[0].QueryRoutine = DiskIdentifierQueryRoutine; QueryTable[1].Name = L"Configuration Data"; QueryTable[1].QueryRoutine = DiskConfigurationDataQueryRoutine; for (DiskCount = 0; ; ++DiskCount) { BiosDiskEntry = (BIOSDISKENTRY*)RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(BIOSDISKENTRY)); if (BiosDiskEntry == NULL) { RtlFreeHeap(ProcessHeap, 0, Int13Drives); return; } RtlStringCchPrintfW(Name, ARRAYSIZE(Name), L"%s\\%lu\\DiskController\\%lu\\DiskPeripheral\\%lu", ROOT_NAME, AdapterCount, ControllerCount, DiskCount); Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE, Name, QueryTable, (PVOID)BiosDiskEntry, NULL); if (!NT_SUCCESS(Status)) { RtlFreeHeap(ProcessHeap, 0, BiosDiskEntry); RtlFreeHeap(ProcessHeap, 0, Int13Drives); return; } BiosDiskEntry->AdapterNumber = 0; // And NOT "AdapterCount" as it needs to be hardcoded for BIOS! BiosDiskEntry->ControllerNumber = ControllerCount; BiosDiskEntry->DiskNumber = DiskCount; BiosDiskEntry->DiskEntry = NULL; if (DiskCount < Int13Drives[0].NumberDrives) { BiosDiskEntry->Int13DiskData = Int13Drives[DiskCount]; } else { DPRINT1("Didn't find Int13 drive data for disk %u\n", DiskCount); } InsertTailList(&PartList->BiosDiskListHead, &BiosDiskEntry->ListEntry); DPRINT("--->\n"); DPRINT("AdapterNumber: %lu\n", BiosDiskEntry->AdapterNumber); DPRINT("ControllerNumber: %lu\n", BiosDiskEntry->ControllerNumber); DPRINT("DiskNumber: %lu\n", BiosDiskEntry->DiskNumber); DPRINT("Signature: %08lx\n", BiosDiskEntry->Signature); DPRINT("Checksum: %08lx\n", BiosDiskEntry->Checksum); DPRINT("BytesPerSector: %lu\n", BiosDiskEntry->DiskGeometry.BytesPerSector); DPRINT("NumberOfCylinders: %lu\n", BiosDiskEntry->DiskGeometry.NumberOfCylinders); DPRINT("NumberOfHeads: %lu\n", BiosDiskEntry->DiskGeometry.NumberOfHeads); DPRINT("DriveSelect: %02x\n", BiosDiskEntry->Int13DiskData.DriveSelect); DPRINT("MaxCylinders: %lu\n", BiosDiskEntry->Int13DiskData.MaxCylinders); DPRINT("SectorsPerTrack: %d\n", BiosDiskEntry->Int13DiskData.SectorsPerTrack); DPRINT("MaxHeads: %d\n", BiosDiskEntry->Int13DiskData.MaxHeads); DPRINT("NumberDrives: %d\n", BiosDiskEntry->Int13DiskData.NumberDrives); DPRINT("<---\n"); } } } } } RtlFreeHeap(ProcessHeap, 0, Int13Drives); #undef ROOT_NAME } /* * Detects whether a disk is a "super-floppy", i.e. an unpartitioned * disk with only a valid VBR, as reported by IoReadPartitionTable() * and IoWritePartitionTable(): * only one single partition starting at offset zero and spanning the * whole disk, without hidden sectors, whose type is FAT16 non-bootable. * * Accessing \Device\HarddiskN\Partition0 or Partition1 on such disks * returns the same data. */ BOOLEAN IsDiskSuperFloppy2( _In_ const DISK_PARTITION_INFO* DiskInfo, _In_opt_ const ULONGLONG* DiskSize, _In_ const PARTITION_INFORMATION* PartitionInfo) { /* 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; } BOOLEAN IsDiskSuperFloppy( _In_ const DRIVE_LAYOUT_INFORMATION* Layout, _In_opt_ const ULONGLONG* DiskSize) { 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); } BOOLEAN IsDiskSuperFloppyEx( _In_ const DRIVE_LAYOUT_INFORMATION_EX* LayoutEx, _In_opt_ const ULONGLONG* DiskSize) { 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); } BOOLEAN IsSuperFloppy( _In_ PDISKENTRY DiskEntry) { 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); } /* * Inserts the disk region represented by PartEntry into either * the primary or the logical partition list of the given disk. * The lists are kept sorted by increasing order of start sectors. * Of course no disk region should overlap at all with one another. */ static BOOLEAN InsertDiskRegion( IN PDISKENTRY DiskEntry, IN PPARTENTRY PartEntry, IN BOOLEAN LogicalPartition) { PLIST_ENTRY List; PLIST_ENTRY Entry; PPARTENTRY PartEntry2; /* Use the correct partition list */ if (LogicalPartition) List = &DiskEntry->LogicalPartListHead; else List = &DiskEntry->PrimaryPartListHead; /* Find the first disk region before which we need to insert the new one */ for (Entry = List->Flink; Entry != List; Entry = Entry->Flink) { PartEntry2 = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry); /* Ignore any unused empty region */ if ((PartEntry2->PartitionType == PARTITION_ENTRY_UNUSED && PartEntry2->StartSector.QuadPart == 0) || PartEntry2->SectorCount.QuadPart == 0) { continue; } /* If the current region ends before the one to be inserted, try again */ if (PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1 < PartEntry->StartSector.QuadPart) continue; /* * One of the disk region boundaries crosses the desired region * (it starts after the desired region, or ends before the end * of the desired region): this is an impossible situation because * disk regions (partitions) cannot overlap! * Throw an error and bail out. */ if (max(PartEntry->StartSector.QuadPart, PartEntry2->StartSector.QuadPart) <= min( PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1, PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1)) { DPRINT1("Disk region overlap problem, stopping there!\n" "Partition to be inserted:\n" " StartSector = %I64u ; EndSector = %I64u\n" "Existing disk region:\n" " StartSector = %I64u ; EndSector = %I64u\n", PartEntry->StartSector.QuadPart, PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1, PartEntry2->StartSector.QuadPart, PartEntry2->StartSector.QuadPart + PartEntry2->SectorCount.QuadPart - 1); return FALSE; } /* We have found the first region before which the new one has to be inserted */ break; } /* Insert the disk region */ InsertTailList(Entry, &PartEntry->ListEntry); return TRUE; } static PPARTENTRY CreateInsertBlankRegion( IN PDISKENTRY DiskEntry, IN OUT PLIST_ENTRY ListHead, IN ULONGLONG StartSector, IN ULONGLONG SectorCount, IN BOOLEAN LogicalSpace) { PPARTENTRY NewPartEntry; NewPartEntry = RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(PARTENTRY)); if (!NewPartEntry) return NULL; NewPartEntry->DiskEntry = DiskEntry; NewPartEntry->StartSector.QuadPart = StartSector; NewPartEntry->SectorCount.QuadPart = SectorCount; NewPartEntry->LogicalPartition = LogicalSpace; NewPartEntry->IsPartitioned = FALSE; NewPartEntry->PartitionType = PARTITION_ENTRY_UNUSED; NewPartEntry->Volume = NULL; DPRINT1("First Sector : %I64u\n", NewPartEntry->StartSector.QuadPart); DPRINT1("Last Sector : %I64u\n", NewPartEntry->StartSector.QuadPart + NewPartEntry->SectorCount.QuadPart - 1); DPRINT1("Total Sectors: %I64u\n", NewPartEntry->SectorCount.QuadPart); /* Insert the new entry into the list */ InsertTailList(ListHead, &NewPartEntry->ListEntry); return NewPartEntry; } static VOID DestroyRegion( _Inout_ PPARTENTRY PartEntry) { // RemoveEntryList(&PartEntry->Volume->ListEntry); if (PartEntry->Volume) RtlFreeHeap(ProcessHeap, 0, PartEntry->Volume); RtlFreeHeap(ProcessHeap, 0, PartEntry); } static VOID AddLogicalDiskSpace( _In_ PDISKENTRY DiskEntry) { ULONGLONG StartSector; ULONGLONG SectorCount; PPARTENTRY NewPartEntry; DPRINT("AddLogicalDiskSpace()\n"); /* Create a partition entry that represents the empty space in the container partition */ StartSector = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment; SectorCount = DiskEntry->ExtendedPartition->SectorCount.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment; NewPartEntry = CreateInsertBlankRegion(DiskEntry, &DiskEntry->LogicalPartListHead, StartSector, SectorCount, TRUE); if (!NewPartEntry) DPRINT1("Failed to create a new empty region for full extended partition space!\n"); } // TODO: Improve upon the PartitionInfo parameter later // (see VDS::CREATE_PARTITION_PARAMETERS and PPARTITION_INFORMATION_MBR/GPT for example) // So far we only use it as the optional type of the partition to create. // // See also CreatePartition(). static BOOLEAN InitializePartitionEntry( _Inout_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo) { PDISKENTRY DiskEntry = PartEntry->DiskEntry; ULONGLONG SectorCount; BOOLEAN isContainer = IsContainerPartition((UCHAR)PartitionInfo); DPRINT1("Current entry sector count: %I64u\n", PartEntry->SectorCount.QuadPart); /* The entry must not be already partitioned and not be void */ ASSERT(!PartEntry->IsPartitioned); ASSERT(PartEntry->SectorCount.QuadPart); ASSERT(!PartEntry->Volume); /* Either we create a primary/logical partition, or we create an * extended partition but the entry must not be logical space */ ASSERT(!isContainer || !PartEntry->LogicalPartition); /* Convert the size in bytes to sector count. SizeBytes being * zero means the caller wants to use all the empty space. */ if ((SizeBytes == 0) || (SizeBytes == GetPartEntrySizeInBytes(PartEntry))) { /* Use all of the unpartitioned disk space */ SectorCount = PartEntry->SectorCount.QuadPart; } else { SectorCount = SizeBytes / DiskEntry->BytesPerSector; if (SectorCount == 0) { /* SizeBytes was certainly less than the minimal size, so fail */ DPRINT1("Partition size %I64u too small\n", SizeBytes); return FALSE; } } DPRINT1(" New sector count: %I64u\n", SectorCount); /* Fail if we request more sectors than what the entry actually contains */ if (SectorCount > PartEntry->SectorCount.QuadPart) return FALSE; if ((SectorCount == 0) || (AlignDown(PartEntry->StartSector.QuadPart + SectorCount, DiskEntry->SectorAlignment) - PartEntry->StartSector.QuadPart == PartEntry->SectorCount.QuadPart)) { /* Reuse the whole current entry */ } else { ULONGLONG StartSector; ULONGLONG SectorCount2; PPARTENTRY NewPartEntry; /* Create a partition entry that represents the remaining space * after the partition to be initialized */ StartSector = AlignDown(PartEntry->StartSector.QuadPart + SectorCount, DiskEntry->SectorAlignment); SectorCount2 = PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - StartSector; NewPartEntry = CreateInsertBlankRegion(DiskEntry, PartEntry->ListEntry.Flink, StartSector, SectorCount2, PartEntry->LogicalPartition); if (!NewPartEntry) { DPRINT1("Failed to create a new empty region for disk space!\n"); return FALSE; } /* Resize down the partition entry; its StartSector remains the same */ PartEntry->SectorCount.QuadPart = StartSector - PartEntry->StartSector.QuadPart; } /* Convert to a new partition entry */ PartEntry->New = TRUE; PartEntry->IsPartitioned = TRUE; PartEntry->BootIndicator = FALSE; if (PartitionInfo) { if (!isContainer) { PartEntry->PartitionType = (UCHAR)PartitionInfo; } else { /* Set the correct extended container partition type, * depending on whether it is contained below or above * the 1024-cylinder (usually 8.4GB/7.8GiB) boundary: * - below: INT13h CHS partition; * - above: Extended INT13h LBA partition. */ if ((PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1) / (DiskEntry->TracksPerCylinder * DiskEntry->SectorsPerTrack) < 1024) { PartEntry->PartitionType = PARTITION_EXTENDED; } else { PartEntry->PartitionType = PARTITION_XINT13_EXTENDED; } } } else { // FIXME: Use FileSystemToMBRPartitionType() only for MBR, otherwise use PARTITION_BASIC_DATA_GUID. ASSERT(!isContainer); PartEntry->PartitionType = FileSystemToMBRPartitionType(L"RAW", PartEntry->StartSector.QuadPart, PartEntry->SectorCount.QuadPart); } ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED); if (isContainer) { DiskEntry->ExtendedPartition = PartEntry; AddLogicalDiskSpace(DiskEntry); } DPRINT1("First Sector : %I64u\n", PartEntry->StartSector.QuadPart); DPRINT1("Last Sector : %I64u\n", PartEntry->StartSector.QuadPart + PartEntry->SectorCount.QuadPart - 1); DPRINT1("Total Sectors: %I64u\n", PartEntry->SectorCount.QuadPart); return TRUE; } static VOID InitPartitionDeviceName( _Inout_ PPARTENTRY PartEntry) { NTSTATUS Status; /* Ignore if this is a container partition */ if (IsContainerPartition(PartEntry->PartitionType)) return; ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0); /* Make a device name for the partition */ Status = RtlStringCchPrintfW(PartEntry->DeviceName, _countof(PartEntry->DeviceName), L"\\Device\\Harddisk%lu\\Partition%lu", PartEntry->DiskEntry->DiskNumber, PartEntry->PartitionNumber); ASSERT(NT_SUCCESS(Status)); } static VOID InitVolumeDeviceName( _Inout_ PVOLENTRY Volume) { NTSTATUS Status; PPARTENTRY PartEntry; /* If we already have a volume device name, do nothing more */ if (*Volume->Info.DeviceName) return; /* Use the partition device name as a temporary volume device name */ // TODO: Ask instead the MOUNTMGR for the name. PartEntry = Volume->PartEntry; ASSERT(PartEntry); ASSERT(PartEntry->IsPartitioned && PartEntry->PartitionNumber != 0); /* Copy the volume device name */ Status = RtlStringCchCopyW(Volume->Info.DeviceName, _countof(Volume->Info.DeviceName), PartEntry->DeviceName); ASSERT(NT_SUCCESS(Status)); } static PVOLENTRY InitVolume( _In_ PPARTLIST List, _In_opt_ PPARTENTRY PartEntry) { PVOLENTRY Volume; Volume = RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(VOLENTRY)); if (!Volume) return NULL; /* Reset some volume information */ /* No device name for now */ Volume->Info.DeviceName[0] = UNICODE_NULL; // Volume->Info.VolumeName[0] = UNICODE_NULL; /* Initialize the volume letter and label */ Volume->Info.DriveLetter = UNICODE_NULL; Volume->Info.VolumeLabel[0] = UNICODE_NULL; /* Specify the volume as initially unformatted */ Volume->Info.FileSystem[0] = UNICODE_NULL; Volume->FormatState = Unformatted; Volume->NeedsCheck = FALSE; Volume->New = TRUE; if (PartEntry) { ASSERT(PartEntry->DiskEntry->PartList == List); Volume->PartEntry = PartEntry; } InsertTailList(&List->VolumesList, &Volume->ListEntry); return Volume; } static VOID AddPartitionToDisk( IN ULONG DiskNumber, IN PDISKENTRY DiskEntry, IN ULONG PartitionIndex, IN BOOLEAN LogicalPartition) { PPARTITION_INFORMATION PartitionInfo; PPARTENTRY PartEntry; PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[PartitionIndex]; /* Ignore empty partitions */ if (PartitionInfo->PartitionType == PARTITION_ENTRY_UNUSED) return; /* Request must be consistent, though! */ ASSERT(!(LogicalPartition && IsContainerPartition(PartitionInfo->PartitionType))); PartEntry = RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(PARTENTRY)); if (!PartEntry) return; PartEntry->DiskEntry = DiskEntry; PartEntry->StartSector.QuadPart = (ULONGLONG)PartitionInfo->StartingOffset.QuadPart / DiskEntry->BytesPerSector; PartEntry->SectorCount.QuadPart = (ULONGLONG)PartitionInfo->PartitionLength.QuadPart / DiskEntry->BytesPerSector; PartEntry->BootIndicator = PartitionInfo->BootIndicator; PartEntry->PartitionType = PartitionInfo->PartitionType; PartEntry->LogicalPartition = LogicalPartition; PartEntry->IsPartitioned = TRUE; PartEntry->OnDiskPartitionNumber = PartitionInfo->PartitionNumber; PartEntry->PartitionNumber = PartitionInfo->PartitionNumber; PartEntry->PartitionIndex = PartitionIndex; InitPartitionDeviceName(PartEntry); /* No volume initially */ PartEntry->Volume = NULL; if (IsContainerPartition(PartEntry->PartitionType)) { if (!LogicalPartition && DiskEntry->ExtendedPartition == NULL) DiskEntry->ExtendedPartition = PartEntry; } else if (IsRecognizedPartition(PartEntry->PartitionType) || // PartitionInfo->RecognizedPartition IsOEMPartition(PartEntry->PartitionType)) { PVOLENTRY Volume; NTSTATUS Status; ASSERT(PartEntry->PartitionNumber != 0); /* The PARTMGR should have notified the MOUNTMGR that a volume * associated with this partition had to be created */ Volume = InitVolume(DiskEntry->PartList, PartEntry); if (!Volume) { DPRINT1("Couldn't allocate a volume for device '%S'\n", PartEntry->DeviceName); goto SkipVolume; } PartEntry->Volume = Volume; InitVolumeDeviceName(Volume); Volume->New = FALSE; /* Attach and mount the volume */ Status = MountVolume(&Volume->Info, PartEntry->PartitionType); if (!NT_SUCCESS(Status)) { DPRINT1("Failed to mount volume '%S', Status 0x%08lx\n", Volume->Info.DeviceName, Status); } // // FIXME: TEMP Backward-compatibility: Set the FormatState // flag in accordance with the FileSystem volume value. // /* * MountVolume() determines whether the given volume is actually * unformatted, if it was mounted with RawFS and the partition * type has specific values for FAT volumes. If so, the volume * stays mounted with RawFS (the FileSystem is "RAW"). However, * if the partition type has different values, the volume is * considered as having an unknown format (it may or may not be * formatted) and the FileSystem value has been emptied. */ if (IsUnknown(&Volume->Info)) Volume->FormatState = UnknownFormat; else if (IsUnformatted(&Volume->Info)) // FileSystem is "RAW" Volume->FormatState = Unformatted; else // !IsUnknown && !IsUnformatted == IsFormatted Volume->FormatState = Formatted; SkipVolume:; } else { /* Unknown partition (may or may not be actually formatted): * the partition is hidden, hence no volume */ DPRINT1("Disk %lu Partition %lu is not recognized (Type 0x%02x)\n", DiskEntry->DiskNumber, PartEntry->PartitionNumber, PartEntry->PartitionType); } InsertDiskRegion(DiskEntry, PartEntry, LogicalPartition); } static VOID ScanForUnpartitionedDiskSpace( IN PDISKENTRY DiskEntry) { ULONGLONG StartSector; ULONGLONG SectorCount; ULONGLONG LastStartSector; ULONGLONG LastSectorCount; ULONGLONG LastUnusedSectorCount; PPARTENTRY PartEntry; PPARTENTRY NewPartEntry; PLIST_ENTRY Entry; DPRINT("ScanForUnpartitionedDiskSpace()\n"); if (IsListEmpty(&DiskEntry->PrimaryPartListHead)) { DPRINT1("No primary partition!\n"); /* Create a partition entry that represents the empty disk */ if (DiskEntry->SectorAlignment < 2048) StartSector = 2048ULL; else StartSector = (ULONGLONG)DiskEntry->SectorAlignment; SectorCount = AlignDown(DiskEntry->SectorCount.QuadPart, DiskEntry->SectorAlignment) - StartSector; NewPartEntry = CreateInsertBlankRegion(DiskEntry, &DiskEntry->PrimaryPartListHead, StartSector, SectorCount, FALSE); if (!NewPartEntry) DPRINT1("Failed to create a new empty region for full disk space!\n"); return; } /* Start partition at head 1, cylinder 0 */ if (DiskEntry->SectorAlignment < 2048) LastStartSector = 2048ULL; else LastStartSector = (ULONGLONG)DiskEntry->SectorAlignment; LastSectorCount = 0ULL; LastUnusedSectorCount = 0ULL; for (Entry = DiskEntry->PrimaryPartListHead.Flink; Entry != &DiskEntry->PrimaryPartListHead; Entry = Entry->Flink) { PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry); if (PartEntry->PartitionType != PARTITION_ENTRY_UNUSED || PartEntry->SectorCount.QuadPart != 0ULL) { LastUnusedSectorCount = PartEntry->StartSector.QuadPart - (LastStartSector + LastSectorCount); if (PartEntry->StartSector.QuadPart > (LastStartSector + LastSectorCount) && LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment) { DPRINT("Unpartitioned disk space %I64u sectors\n", LastUnusedSectorCount); StartSector = LastStartSector + LastSectorCount; SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector; /* Insert the table into the list */ NewPartEntry = CreateInsertBlankRegion(DiskEntry, &PartEntry->ListEntry, StartSector, SectorCount, FALSE); if (!NewPartEntry) { DPRINT1("Failed to create a new empty region for disk space!\n"); return; } } LastStartSector = PartEntry->StartSector.QuadPart; LastSectorCount = PartEntry->SectorCount.QuadPart; } } /* Check for trailing unpartitioned disk space */ if ((LastStartSector + LastSectorCount) < DiskEntry->SectorCount.QuadPart) { LastUnusedSectorCount = AlignDown(DiskEntry->SectorCount.QuadPart - (LastStartSector + LastSectorCount), DiskEntry->SectorAlignment); if (LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment) { DPRINT("Unpartitioned disk space: %I64u sectors\n", LastUnusedSectorCount); StartSector = LastStartSector + LastSectorCount; SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector; /* Append the table to the list */ NewPartEntry = CreateInsertBlankRegion(DiskEntry, &DiskEntry->PrimaryPartListHead, StartSector, SectorCount, FALSE); if (!NewPartEntry) { DPRINT1("Failed to create a new empty region for trailing disk space!\n"); return; } } } if (DiskEntry->ExtendedPartition != NULL) { if (IsListEmpty(&DiskEntry->LogicalPartListHead)) { DPRINT1("No logical partition!\n"); /* Create a partition entry that represents the empty extended partition */ AddLogicalDiskSpace(DiskEntry); return; } /* Start partition at head 1, cylinder 0 */ LastStartSector = DiskEntry->ExtendedPartition->StartSector.QuadPart + (ULONGLONG)DiskEntry->SectorAlignment; LastSectorCount = 0ULL; LastUnusedSectorCount = 0ULL; for (Entry = DiskEntry->LogicalPartListHead.Flink; Entry != &DiskEntry->LogicalPartListHead; Entry = Entry->Flink) { PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry); if (PartEntry->PartitionType != PARTITION_ENTRY_UNUSED || PartEntry->SectorCount.QuadPart != 0ULL) { LastUnusedSectorCount = PartEntry->StartSector.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment - (LastStartSector + LastSectorCount); if ((PartEntry->StartSector.QuadPart - (ULONGLONG)DiskEntry->SectorAlignment) > (LastStartSector + LastSectorCount) && LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment) { DPRINT("Unpartitioned disk space %I64u sectors\n", LastUnusedSectorCount); StartSector = LastStartSector + LastSectorCount; SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector; /* Insert the table into the list */ NewPartEntry = CreateInsertBlankRegion(DiskEntry, &PartEntry->ListEntry, StartSector, SectorCount, TRUE); if (!NewPartEntry) { DPRINT1("Failed to create a new empty region for extended partition space!\n"); return; } } LastStartSector = PartEntry->StartSector.QuadPart; LastSectorCount = PartEntry->SectorCount.QuadPart; } } /* Check for trailing unpartitioned disk space */ if ((LastStartSector + LastSectorCount) < DiskEntry->ExtendedPartition->StartSector.QuadPart + DiskEntry->ExtendedPartition->SectorCount.QuadPart) { LastUnusedSectorCount = AlignDown(DiskEntry->ExtendedPartition->StartSector.QuadPart + DiskEntry->ExtendedPartition->SectorCount.QuadPart - (LastStartSector + LastSectorCount), DiskEntry->SectorAlignment); if (LastUnusedSectorCount >= (ULONGLONG)DiskEntry->SectorAlignment) { DPRINT("Unpartitioned disk space: %I64u sectors\n", LastUnusedSectorCount); StartSector = LastStartSector + LastSectorCount; SectorCount = AlignDown(StartSector + LastUnusedSectorCount, DiskEntry->SectorAlignment) - StartSector; /* Append the table to the list */ NewPartEntry = CreateInsertBlankRegion(DiskEntry, &DiskEntry->LogicalPartListHead, StartSector, SectorCount, TRUE); if (!NewPartEntry) { DPRINT1("Failed to create a new empty region for extended partition space!\n"); return; } } } } DPRINT("ScanForUnpartitionedDiskSpace() done\n"); } static VOID SetDiskSignature( IN PPARTLIST List, IN PDISKENTRY DiskEntry) { LARGE_INTEGER SystemTime; TIME_FIELDS TimeFields; PLIST_ENTRY Entry2; PDISKENTRY DiskEntry2; PUCHAR Buffer; if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT) { DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n"); return; } Buffer = (PUCHAR)&DiskEntry->LayoutBuffer->Signature; while (TRUE) { NtQuerySystemTime(&SystemTime); RtlTimeToTimeFields(&SystemTime, &TimeFields); Buffer[0] = (UCHAR)(TimeFields.Year & 0xFF) + (UCHAR)(TimeFields.Hour & 0xFF); Buffer[1] = (UCHAR)(TimeFields.Year >> 8) + (UCHAR)(TimeFields.Minute & 0xFF); Buffer[2] = (UCHAR)(TimeFields.Month & 0xFF) + (UCHAR)(TimeFields.Second & 0xFF); Buffer[3] = (UCHAR)(TimeFields.Day & 0xFF) + (UCHAR)(TimeFields.Milliseconds & 0xFF); if (DiskEntry->LayoutBuffer->Signature == 0) { continue; } /* Check if the signature already exist */ /* FIXME: * Check also signatures from disks, which are * not visible (bootable) by the BIOS. */ for (Entry2 = List->DiskListHead.Flink; Entry2 != &List->DiskListHead; Entry2 = Entry2->Flink) { DiskEntry2 = CONTAINING_RECORD(Entry2, DISKENTRY, ListEntry); if (DiskEntry2->DiskStyle == PARTITION_STYLE_GPT) { DPRINT("GPT-partitioned disk detected, not currently supported by SETUP!\n"); continue; } if (DiskEntry != DiskEntry2 && DiskEntry->LayoutBuffer->Signature == DiskEntry2->LayoutBuffer->Signature) break; } if (Entry2 == &List->DiskListHead) break; } } static VOID UpdateDiskSignatures( IN PPARTLIST List) { PLIST_ENTRY Entry; PDISKENTRY DiskEntry; /* Update each disk */ 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->LayoutBuffer && DiskEntry->LayoutBuffer->Signature == 0) { SetDiskSignature(List, DiskEntry); DiskEntry->LayoutBuffer->PartitionEntry[0].RewritePartition = TRUE; } } } static VOID UpdateHwDiskNumbers( IN PPARTLIST List) { PLIST_ENTRY ListEntry; PBIOSDISKENTRY BiosDiskEntry; PDISKENTRY DiskEntry; ULONG HwAdapterNumber = 0; ULONG HwControllerNumber = 0; ULONG RemovableDiskCount = 0; /* * Enumerate the disks recognized by the BIOS and recompute the disk * numbers on the system when *ALL* removable disks are not connected. * The entries are inserted in increasing order of AdapterNumber, * ControllerNumber and DiskNumber. */ for (ListEntry = List->BiosDiskListHead.Flink; ListEntry != &List->BiosDiskListHead; ListEntry = ListEntry->Flink) { BiosDiskEntry = CONTAINING_RECORD(ListEntry, BIOSDISKENTRY, ListEntry); DiskEntry = BiosDiskEntry->DiskEntry; /* * If the adapter or controller numbers change, update them and reset * the number of removable disks on this adapter/controller. */ if (HwAdapterNumber != BiosDiskEntry->AdapterNumber || HwControllerNumber != BiosDiskEntry->ControllerNumber) { HwAdapterNumber = BiosDiskEntry->AdapterNumber; HwControllerNumber = BiosDiskEntry->ControllerNumber; RemovableDiskCount = 0; } /* Adjust the actual hardware disk number */ if (DiskEntry) { ASSERT(DiskEntry->HwDiskNumber == BiosDiskEntry->DiskNumber); if (DiskEntry->MediaType == RemovableMedia) { /* Increase the number of removable disks and set the disk number to zero */ ++RemovableDiskCount; DiskEntry->HwFixedDiskNumber = 0; } else // if (DiskEntry->MediaType == FixedMedia) { /* Adjust the fixed disk number, offset by the number of removable disks found before this one */ DiskEntry->HwFixedDiskNumber = BiosDiskEntry->DiskNumber - RemovableDiskCount; } } else { DPRINT1("BIOS disk %lu is not recognized by NTOS!\n", BiosDiskEntry->DiskNumber); } } } static VOID AddDiskToList( IN HANDLE FileHandle, IN ULONG DiskNumber, IN PPARTLIST List) { DISK_GEOMETRY DiskGeometry; SCSI_ADDRESS ScsiAddress; PDISKENTRY DiskEntry; IO_STATUS_BLOCK Iosb; NTSTATUS Status; PPARTITION_SECTOR Mbr; PULONG Buffer; LARGE_INTEGER FileOffset; WCHAR Identifier[20]; ULONG Checksum; ULONG Signature; ULONG i; PLIST_ENTRY ListEntry; PBIOSDISKENTRY BiosDiskEntry; ULONG LayoutBufferSize; PDRIVE_LAYOUT_INFORMATION NewLayoutBuffer; /* Retrieve the drive geometry */ Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL, &Iosb, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &DiskGeometry, sizeof(DiskGeometry)); if (!NT_SUCCESS(Status)) return; if (DiskGeometry.MediaType != FixedMedia && DiskGeometry.MediaType != RemovableMedia) { return; } /* * FIXME: Here we suppose the disk is always SCSI. What if it is * of another type? To check this we need to retrieve the name of * the driver the disk device belongs to. */ Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL, &Iosb, IOCTL_SCSI_GET_ADDRESS, NULL, 0, &ScsiAddress, sizeof(ScsiAddress)); if (!NT_SUCCESS(Status)) return; /* * Check whether the disk is initialized, by looking at its MBR. * NOTE that this must be generalized to GPT disks as well! */ Mbr = (PARTITION_SECTOR*)RtlAllocateHeap(ProcessHeap, 0, DiskGeometry.BytesPerSector); if (Mbr == NULL) return; FileOffset.QuadPart = 0; Status = NtReadFile(FileHandle, NULL, NULL, NULL, &Iosb, (PVOID)Mbr, DiskGeometry.BytesPerSector, &FileOffset, NULL); if (!NT_SUCCESS(Status)) { RtlFreeHeap(ProcessHeap, 0, Mbr); DPRINT1("NtReadFile failed, status=%x\n", Status); return; } Signature = Mbr->Signature; /* Calculate the MBR checksum */ Checksum = 0; Buffer = (PULONG)Mbr; for (i = 0; i < 128; i++) { Checksum += Buffer[i]; } Checksum = ~Checksum + 1; RtlStringCchPrintfW(Identifier, ARRAYSIZE(Identifier), L"%08x-%08x-%c", Checksum, Signature, (Mbr->Magic == PARTITION_MAGIC) ? L'A' : L'X'); DPRINT("Identifier: %S\n", Identifier); DiskEntry = RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, sizeof(DISKENTRY)); if (DiskEntry == NULL) { RtlFreeHeap(ProcessHeap, 0, Mbr); DPRINT1("Failed to allocate a new disk entry.\n"); return; } DiskEntry->PartList = List; #if 0 { FILE_FS_DEVICE_INFORMATION FileFsDevice; /* Query the device for its type */ Status = NtQueryVolumeInformationFile(FileHandle, &Iosb, &FileFsDevice, sizeof(FileFsDevice), FileFsDeviceInformation); if (!NT_SUCCESS(Status)) { DPRINT1("Couldn't detect device type for disk %lu of identifier '%S'...\n", DiskNumber, Identifier); } else { DPRINT1("Disk %lu : DeviceType: 0x%08x ; Characteristics: 0x%08x\n", DiskNumber, FileFsDevice.DeviceType, FileFsDevice.Characteristics); } } // NOTE: We may also use NtQueryVolumeInformationFile(FileFsDeviceInformation). #endif DiskEntry->MediaType = DiskGeometry.MediaType; if (DiskEntry->MediaType == RemovableMedia) { DPRINT1("Disk %lu of identifier '%S' is removable\n", DiskNumber, Identifier); } else // if (DiskEntry->MediaType == FixedMedia) { DPRINT1("Disk %lu of identifier '%S' is fixed\n", DiskNumber, Identifier); } // DiskEntry->Checksum = Checksum; // DiskEntry->Signature = Signature; DiskEntry->BiosFound = FALSE; /* * Check if this disk has a valid MBR: verify its signature, * and whether its two first bytes are a valid instruction * (related to this, see IsThereAValidBootSector() in partlist.c). * * See also ntoskrnl/fstub/fstubex.c!FstubDetectPartitionStyle(). */ // DiskEntry->NoMbr = (Mbr->Magic != PARTITION_MAGIC || (*(PUSHORT)Mbr->BootCode) == 0x0000); /* If we have not the 0xAA55 then it's raw partition */ if (Mbr->Magic != PARTITION_MAGIC) { DiskEntry->DiskStyle = PARTITION_STYLE_RAW; } /* Check partitions types: if first is 0xEE and all the others 0, we have GPT */ else if (Mbr->Partition[0].PartitionType == EFI_PMBR_OSTYPE_EFI && Mbr->Partition[1].PartitionType == 0 && Mbr->Partition[2].PartitionType == 0 && Mbr->Partition[3].PartitionType == 0) { DiskEntry->DiskStyle = PARTITION_STYLE_GPT; } /* Otherwise, partition table is in MBR */ else { DiskEntry->DiskStyle = PARTITION_STYLE_MBR; } /* Free the MBR sector buffer */ RtlFreeHeap(ProcessHeap, 0, Mbr); for (ListEntry = List->BiosDiskListHead.Flink; ListEntry != &List->BiosDiskListHead; ListEntry = ListEntry->Flink) { BiosDiskEntry = CONTAINING_RECORD(ListEntry, BIOSDISKENTRY, ListEntry); /* FIXME: * Compare the size from BIOS and the reported size from driver. * If we have more than one disk with a zero or with the same signature * we must create new signatures and reboot. After the reboot, * it is possible to identify the disks. */ if (BiosDiskEntry->Signature == Signature && BiosDiskEntry->Checksum == Checksum && BiosDiskEntry->DiskEntry == NULL) { if (!DiskEntry->BiosFound) { DiskEntry->HwAdapterNumber = BiosDiskEntry->AdapterNumber; DiskEntry->HwControllerNumber = BiosDiskEntry->ControllerNumber; DiskEntry->HwDiskNumber = BiosDiskEntry->DiskNumber; if (DiskEntry->MediaType == RemovableMedia) { /* Set the removable disk number to zero */ DiskEntry->HwFixedDiskNumber = 0; } else // if (DiskEntry->MediaType == FixedMedia) { /* The fixed disk number will later be adjusted using the number of removable disks */ DiskEntry->HwFixedDiskNumber = BiosDiskEntry->DiskNumber; } DiskEntry->BiosFound = TRUE; BiosDiskEntry->DiskEntry = DiskEntry; break; } else { // FIXME: What to do? DPRINT1("Disk %lu of identifier '%S' has already been found?!\n", DiskNumber, Identifier); } } } if (!DiskEntry->BiosFound) { DPRINT1("WARNING: Setup could not find a matching BIOS disk entry. Disk %lu may not be bootable by the BIOS!\n", DiskNumber); } DiskEntry->Cylinders = DiskGeometry.Cylinders.QuadPart; DiskEntry->TracksPerCylinder = DiskGeometry.TracksPerCylinder; DiskEntry->SectorsPerTrack = DiskGeometry.SectorsPerTrack; DiskEntry->BytesPerSector = DiskGeometry.BytesPerSector; DPRINT("Cylinders %I64u\n", DiskEntry->Cylinders); DPRINT("TracksPerCylinder %lu\n", DiskEntry->TracksPerCylinder); DPRINT("SectorsPerTrack %lu\n", DiskEntry->SectorsPerTrack); DPRINT("BytesPerSector %lu\n", DiskEntry->BytesPerSector); DiskEntry->SectorCount.QuadPart = DiskGeometry.Cylinders.QuadPart * (ULONGLONG)DiskGeometry.TracksPerCylinder * (ULONGLONG)DiskGeometry.SectorsPerTrack; DiskEntry->SectorAlignment = DiskGeometry.SectorsPerTrack; DiskEntry->CylinderAlignment = DiskGeometry.TracksPerCylinder * DiskGeometry.SectorsPerTrack; DPRINT("SectorCount %I64u\n", DiskEntry->SectorCount.QuadPart); DPRINT("SectorAlignment %lu\n", DiskEntry->SectorAlignment); DiskEntry->DiskNumber = DiskNumber; DiskEntry->Port = ScsiAddress.PortNumber; DiskEntry->Bus = ScsiAddress.PathId; DiskEntry->Id = ScsiAddress.TargetId; GetDriverName(DiskEntry); /* * Actually it would be more correct somehow to use: * * OBJECT_NAME_INFORMATION NameInfo; // ObjectNameInfo; * ULONG ReturnedLength; * * Status = NtQueryObject(SomeHandleToTheDisk, * ObjectNameInformation, * &NameInfo, * sizeof(NameInfo), * &ReturnedLength); * etc... * * See examples in https://git.reactos.org/?p=reactos.git;a=blob;f=reactos/ntoskrnl/io/iomgr/error.c;hb=2f3a93ee9cec8322a86bf74b356f1ad83fc912dc#l267 */ InitializeListHead(&DiskEntry->PrimaryPartListHead); InitializeListHead(&DiskEntry->LogicalPartListHead); InsertAscendingList(&List->DiskListHead, DiskEntry, DISKENTRY, ListEntry, DiskNumber); /* * We now retrieve the disk partition layout */ /* * Stop there now if the disk is GPT-partitioned, * since we currently do not support such disks. */ if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT) { DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n"); return; } /* Allocate a layout buffer with 4 partition entries first */ LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) + ((4 - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION)); DiskEntry->LayoutBuffer = RtlAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, LayoutBufferSize); if (DiskEntry->LayoutBuffer == NULL) { DPRINT1("Failed to allocate the disk layout buffer!\n"); return; } /* Keep looping while the drive layout buffer is too small */ for (;;) { DPRINT1("Buffer size: %lu\n", LayoutBufferSize); Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL, &Iosb, IOCTL_DISK_GET_DRIVE_LAYOUT, NULL, 0, DiskEntry->LayoutBuffer, LayoutBufferSize); if (NT_SUCCESS(Status)) break; if (Status != STATUS_BUFFER_TOO_SMALL) { DPRINT1("NtDeviceIoControlFile() failed (Status: 0x%08lx)\n", Status); return; } LayoutBufferSize += 4 * sizeof(PARTITION_INFORMATION); NewLayoutBuffer = RtlReAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, DiskEntry->LayoutBuffer, LayoutBufferSize); if (NewLayoutBuffer == NULL) { DPRINT1("Failed to reallocate the disk layout buffer!\n"); return; } DiskEntry->LayoutBuffer = NewLayoutBuffer; } DPRINT1("PartitionCount: %lu\n", DiskEntry->LayoutBuffer->PartitionCount); #ifdef DUMP_PARTITION_TABLE DumpPartitionTable(DiskEntry); #endif if (IsSuperFloppy(DiskEntry)) DPRINT1("Disk %lu is a super-floppy\n", DiskNumber); if (DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart != 0 && DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionLength.QuadPart != 0 && DiskEntry->LayoutBuffer->PartitionEntry[0].PartitionType != PARTITION_ENTRY_UNUSED) { if ((DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart / DiskEntry->BytesPerSector) % DiskEntry->SectorsPerTrack == 0) { DPRINT("Use %lu Sector alignment!\n", DiskEntry->SectorsPerTrack); } else if (DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart % (1024 * 1024) == 0) { DPRINT1("Use megabyte (%lu Sectors) alignment!\n", (1024 * 1024) / DiskEntry->BytesPerSector); } else { DPRINT1("No matching alignment found! Partition 1 starts at %I64u\n", DiskEntry->LayoutBuffer->PartitionEntry[0].StartingOffset.QuadPart); } } else { DPRINT1("No valid partition table found! Use megabyte (%lu Sectors) alignment!\n", (1024 * 1024) / DiskEntry->BytesPerSector); } if (DiskEntry->LayoutBuffer->PartitionCount == 0) { DiskEntry->NewDisk = TRUE; DiskEntry->LayoutBuffer->PartitionCount = 4; for (i = 0; i < 4; i++) { DiskEntry->LayoutBuffer->PartitionEntry[i].RewritePartition = TRUE; } } else { /* Enumerate and add the first four primary partitions */ for (i = 0; i < 4; i++) { AddPartitionToDisk(DiskNumber, DiskEntry, i, FALSE); } /* Enumerate and add the remaining partitions as logical ones */ for (i = 4; i < DiskEntry->LayoutBuffer->PartitionCount; i += 4) { AddPartitionToDisk(DiskNumber, DiskEntry, i, TRUE); } } ScanForUnpartitionedDiskSpace(DiskEntry); } /* * Retrieve the system disk, i.e. the fixed disk that is accessible by the * firmware during boot time and where the system partition resides. * If no system partition has been determined, we retrieve the first disk * that verifies the mentioned criteria above. */ static PDISKENTRY GetSystemDisk( IN PPARTLIST List) { PLIST_ENTRY Entry; PDISKENTRY DiskEntry; /* Check for empty disk list */ if (IsListEmpty(&List->DiskListHead)) return NULL; /* * If we already have a system partition, the system disk * is the one on which the system partition resides. */ if (List->SystemPartition) return List->SystemPartition->DiskEntry; /* 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); /* The disk must be a fixed disk and be found by the firmware */ if (DiskEntry->MediaType == FixedMedia && DiskEntry->BiosFound) { break; } } if (Entry == &List->DiskListHead) { /* We haven't encountered any suitable disk */ return NULL; } if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT) { DPRINT1("System disk -- GPT-partitioned disk detected, not currently supported by SETUP!\n"); } return DiskEntry; } /* * Retrieve the actual "active" partition of the given disk. * On MBR disks, partition with the Active/Boot flag set; * on GPT disks, partition with the correct GUID. */ BOOLEAN IsPartitionActive( IN PPARTENTRY PartEntry) { // 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; } static PPARTENTRY GetActiveDiskPartition( IN PDISKENTRY DiskEntry) { PLIST_ENTRY ListEntry; PPARTENTRY PartEntry; PPARTENTRY ActivePartition = NULL; /* Check for empty disk list */ // ASSERT(DiskEntry); if (!DiskEntry) return NULL; /* Check for empty partition list */ if (IsListEmpty(&DiskEntry->PrimaryPartListHead)) return NULL; if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT) { DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n"); return NULL; } /* Scan all (primary) partitions to find the active disk partition */ for (ListEntry = DiskEntry->PrimaryPartListHead.Flink; ListEntry != &DiskEntry->PrimaryPartListHead; ListEntry = ListEntry->Flink) { /* Retrieve the partition */ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry); if (IsPartitionActive(PartEntry)) { /* Yes, we've found it */ ASSERT(DiskEntry == PartEntry->DiskEntry); ASSERT(PartEntry->IsPartitioned); ASSERT(PartEntry->Volume); ActivePartition = PartEntry; DPRINT1("Found active system partition %lu in disk %lu, drive letter %C\n", PartEntry->PartitionNumber, DiskEntry->DiskNumber, !PartEntry->Volume->Info.DriveLetter ? L'-' : PartEntry->Volume->Info.DriveLetter); break; } } /* Check if the disk is new and if so, use its first partition as the active system partition */ if (DiskEntry->NewDisk && ActivePartition != NULL) { // FIXME: What to do?? DPRINT1("NewDisk TRUE but already existing active partition?\n"); } /* Return the active partition found (or none) */ return ActivePartition; } PPARTLIST CreatePartitionList(VOID) { 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); /* * 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; } VOID DestroyPartitionList( IN PPARTLIST List) { 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); 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 list head */ RtlFreeHeap(ProcessHeap, 0, List); } PDISKENTRY GetDiskByBiosNumber( _In_ PPARTLIST List, _In_ ULONG HwDiskNumber) { 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; } PDISKENTRY GetDiskByNumber( _In_ PPARTLIST List, _In_ ULONG DiskNumber) { 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; } PDISKENTRY GetDiskBySCSI( _In_ PPARTLIST List, _In_ USHORT Port, _In_ USHORT Bus, _In_ USHORT Id) { 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; } PDISKENTRY GetDiskBySignature( _In_ PPARTLIST List, _In_ ULONG Signature) { 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; } PPARTENTRY GetPartition( _In_ PDISKENTRY DiskEntry, _In_ ULONG PartitionNumber) { 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; } PPARTENTRY SelectPartition( _In_ PPARTLIST List, _In_ ULONG DiskNumber, _In_ ULONG PartitionNumber) { 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; } PPARTENTRY GetNextPartition( IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL) { 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; } PPARTENTRY GetPrevPartition( IN PPARTLIST List, IN PPARTENTRY CurrentPart OPTIONAL) { 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; } static inline BOOLEAN IsEmptyLayoutEntry( _In_ PPARTITION_INFORMATION PartitionInfo) { return (PartitionInfo->StartingOffset.QuadPart == 0 && PartitionInfo->PartitionLength.QuadPart == 0); } static inline BOOLEAN IsSamePrimaryLayoutEntry( _In_ PPARTITION_INFORMATION PartitionInfo, _In_ PPARTENTRY PartEntry) { return ((PartitionInfo->StartingOffset.QuadPart == GetPartEntryOffsetInBytes(PartEntry)) && (PartitionInfo->PartitionLength.QuadPart == GetPartEntrySizeInBytes(PartEntry))); // PartitionInfo->PartitionType == PartEntry->PartitionType } /** * @brief * Counts the number of partitioned disk regions in a given partition list. **/ static ULONG GetPartitionCount( _In_ PLIST_ENTRY PartListHead) { PLIST_ENTRY Entry; PPARTENTRY PartEntry; ULONG Count = 0; for (Entry = PartListHead->Flink; Entry != PartListHead; Entry = Entry->Flink) { PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry); if (PartEntry->IsPartitioned) ++Count; } return Count; } #define GetPrimaryPartitionCount(DiskEntry) \ GetPartitionCount(&(DiskEntry)->PrimaryPartListHead) #define GetLogicalPartitionCount(DiskEntry) \ (((DiskEntry)->DiskStyle == PARTITION_STYLE_MBR) \ ? GetPartitionCount(&(DiskEntry)->LogicalPartListHead) : 0) static BOOLEAN ReAllocateLayoutBuffer( IN PDISKENTRY DiskEntry) { PDRIVE_LAYOUT_INFORMATION NewLayoutBuffer; ULONG NewPartitionCount; ULONG CurrentPartitionCount = 0; ULONG LayoutBufferSize; ULONG i; DPRINT1("ReAllocateLayoutBuffer()\n"); NewPartitionCount = 4 + GetLogicalPartitionCount(DiskEntry) * 4; if (DiskEntry->LayoutBuffer) CurrentPartitionCount = DiskEntry->LayoutBuffer->PartitionCount; DPRINT1("CurrentPartitionCount: %lu ; NewPartitionCount: %lu\n", CurrentPartitionCount, NewPartitionCount); if (CurrentPartitionCount == NewPartitionCount) return TRUE; LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) + ((NewPartitionCount - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION)); NewLayoutBuffer = RtlReAllocateHeap(ProcessHeap, HEAP_ZERO_MEMORY, DiskEntry->LayoutBuffer, LayoutBufferSize); if (NewLayoutBuffer == NULL) { DPRINT1("Failed to allocate the new layout buffer (size: %lu)\n", LayoutBufferSize); return FALSE; } NewLayoutBuffer->PartitionCount = NewPartitionCount; /* If the layout buffer grows, make sure the new (empty) entries are written to the disk */ if (NewPartitionCount > CurrentPartitionCount) { for (i = CurrentPartitionCount; i < NewPartitionCount; i++) { NewLayoutBuffer->PartitionEntry[i].RewritePartition = TRUE; } } DiskEntry->LayoutBuffer = NewLayoutBuffer; return TRUE; } static VOID UpdateDiskLayout( IN PDISKENTRY DiskEntry) { PPARTITION_INFORMATION PartitionInfo; PPARTITION_INFORMATION LinkInfo; PLIST_ENTRY ListEntry; PPARTENTRY PartEntry; LARGE_INTEGER HiddenSectors64; ULONG Index; ULONG PartitionNumber = 1; DPRINT1("UpdateDiskLayout()\n"); if (DiskEntry->DiskStyle == PARTITION_STYLE_GPT) { DPRINT1("GPT-partitioned disk detected, not currently supported by SETUP!\n"); return; } /* Resize the layout buffer if necessary */ if (!ReAllocateLayoutBuffer(DiskEntry)) { DPRINT("ReAllocateLayoutBuffer() failed.\n"); return; } /* Update the primary partition table */ Index = 0; for (ListEntry = DiskEntry->PrimaryPartListHead.Flink; ListEntry != &DiskEntry->PrimaryPartListHead; ListEntry = ListEntry->Flink) { PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry); if (PartEntry->IsPartitioned) { ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED); PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index]; PartEntry->PartitionIndex = Index; /* Reset the current partition number only for not-yet written partitions */ if (PartEntry->New) PartEntry->PartitionNumber = 0; PartEntry->OnDiskPartitionNumber = (!IsContainerPartition(PartEntry->PartitionType) ? PartitionNumber : 0); if (!IsSamePrimaryLayoutEntry(PartitionInfo, PartEntry)) { DPRINT1("Updating primary partition entry %lu\n", Index); PartitionInfo->StartingOffset.QuadPart = GetPartEntryOffsetInBytes(PartEntry); PartitionInfo->PartitionLength.QuadPart = GetPartEntrySizeInBytes(PartEntry); PartitionInfo->HiddenSectors = PartEntry->StartSector.LowPart; PartitionInfo->PartitionNumber = PartEntry->PartitionNumber; PartitionInfo->PartitionType = PartEntry->PartitionType; PartitionInfo->BootIndicator = PartEntry->BootIndicator; PartitionInfo->RecognizedPartition = IsRecognizedPartition(PartEntry->PartitionType); PartitionInfo->RewritePartition = TRUE; } if (!IsContainerPartition(PartEntry->PartitionType)) PartitionNumber++; Index++; } } ASSERT(Index <= 4); /* Update the logical partition table */ LinkInfo = NULL; Index = 4; for (ListEntry = DiskEntry->LogicalPartListHead.Flink; ListEntry != &DiskEntry->LogicalPartListHead; ListEntry = ListEntry->Flink) { PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry); if (PartEntry->IsPartitioned) { ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED); PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index]; PartEntry->PartitionIndex = Index; /* Reset the current partition number only for not-yet written partitions */ if (PartEntry->New) PartEntry->PartitionNumber = 0; PartEntry->OnDiskPartitionNumber = PartitionNumber; DPRINT1("Updating logical partition entry %lu\n", Index); PartitionInfo->StartingOffset.QuadPart = GetPartEntryOffsetInBytes(PartEntry); PartitionInfo->PartitionLength.QuadPart = GetPartEntrySizeInBytes(PartEntry); PartitionInfo->HiddenSectors = DiskEntry->SectorAlignment; PartitionInfo->PartitionNumber = PartEntry->PartitionNumber; PartitionInfo->PartitionType = PartEntry->PartitionType; PartitionInfo->BootIndicator = FALSE; PartitionInfo->RecognizedPartition = IsRecognizedPartition(PartEntry->PartitionType); PartitionInfo->RewritePartition = TRUE; /* Fill the link entry of the previous partition entry */ if (LinkInfo) { LinkInfo->StartingOffset.QuadPart = (PartEntry->StartSector.QuadPart - DiskEntry->SectorAlignment) * DiskEntry->BytesPerSector; LinkInfo->PartitionLength.QuadPart = (PartEntry->StartSector.QuadPart + DiskEntry->SectorAlignment) * DiskEntry->BytesPerSector; HiddenSectors64.QuadPart = PartEntry->StartSector.QuadPart - DiskEntry->SectorAlignment - DiskEntry->ExtendedPartition->StartSector.QuadPart; LinkInfo->HiddenSectors = HiddenSectors64.LowPart; LinkInfo->PartitionNumber = 0; /* Extended partition links only use type 0x05, as observed * on Windows NT. Alternatively they could inherit the type * of the main extended container. */ LinkInfo->PartitionType = PARTITION_EXTENDED; // DiskEntry->ExtendedPartition->PartitionType; LinkInfo->BootIndicator = FALSE; LinkInfo->RecognizedPartition = FALSE; LinkInfo->RewritePartition = TRUE; } /* Save a pointer to the link entry of the current partition entry */ LinkInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index + 1]; PartitionNumber++; Index += 4; } } /* Wipe unused primary partition entries */ for (Index = GetPrimaryPartitionCount(DiskEntry); Index < 4; Index++) { DPRINT1("Primary partition entry %lu\n", Index); PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index]; if (!IsEmptyLayoutEntry(PartitionInfo)) { DPRINT1("Wiping primary partition entry %lu\n", Index); PartitionInfo->StartingOffset.QuadPart = 0; PartitionInfo->PartitionLength.QuadPart = 0; PartitionInfo->HiddenSectors = 0; PartitionInfo->PartitionNumber = 0; PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED; PartitionInfo->BootIndicator = FALSE; PartitionInfo->RecognizedPartition = FALSE; PartitionInfo->RewritePartition = TRUE; } } /* Wipe unused logical partition entries */ for (Index = 4; Index < DiskEntry->LayoutBuffer->PartitionCount; Index++) { if (Index % 4 >= 2) { DPRINT1("Logical partition entry %lu\n", Index); PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index]; if (!IsEmptyLayoutEntry(PartitionInfo)) { DPRINT1("Wiping partition entry %lu\n", Index); PartitionInfo->StartingOffset.QuadPart = 0; PartitionInfo->PartitionLength.QuadPart = 0; PartitionInfo->HiddenSectors = 0; PartitionInfo->PartitionNumber = 0; PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED; PartitionInfo->BootIndicator = FALSE; PartitionInfo->RecognizedPartition = FALSE; PartitionInfo->RewritePartition = TRUE; } } } // HACK: See the FIXMEs in WritePartitions(): (Re)set the PartitionStyle to MBR. DiskEntry->DiskStyle = PARTITION_STYLE_MBR; DiskEntry->Dirty = TRUE; #ifdef DUMP_PARTITION_TABLE DumpPartitionTable(DiskEntry); #endif } /** * @brief * Retrieves, if any, the unpartitioned disk region that is adjacent * (next or previous) to the specified partition. * * @param[in] PartEntry * Partition from where to find the adjacent unpartitioned region. * * @param[in] Direction * TRUE or FALSE to search the next or previous region, respectively. * * @return The adjacent unpartitioned region, if it exists, or NULL. **/ PPARTENTRY GetAdjUnpartitionedEntry( _In_ PPARTENTRY PartEntry, _In_ BOOLEAN Direction) { 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; } ERROR_NUMBER PartitionCreationChecks( _In_ PPARTENTRY PartEntry) { 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; } ERROR_NUMBER ExtendedPartitionCreationChecks( _In_ PPARTENTRY PartEntry) { 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; } // TODO: Improve upon the PartitionInfo parameter later // (see VDS::CREATE_PARTITION_PARAMETERS and PPARTITION_INFORMATION_MBR/GPT for example) // So far we only use it as the optional type of the partition to create. BOOLEAN CreatePartition( _In_ PPARTLIST List, _Inout_ PPARTENTRY PartEntry, _In_opt_ ULONGLONG SizeBytes, _In_opt_ ULONG_PTR PartitionInfo) { 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; } 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; 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; } static NTSTATUS DismountPartition( _In_ PPARTLIST List, _In_ PPARTENTRY PartEntry) { NTSTATUS Status; PVOLENTRY Volume = PartEntry->Volume; ASSERT(PartEntry->DiskEntry->PartList == List); /* Check whether the partition is valid and was mounted by the system */ if (!PartEntry->IsPartitioned || IsContainerPartition(PartEntry->PartitionType) || !IsRecognizedPartition(PartEntry->PartitionType) || !Volume || Volume->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->PartitionNumber == 0) { /* The partition is not mounted, so just return success */ return STATUS_SUCCESS; } ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED); ASSERT(Volume->PartEntry == PartEntry); /* Unlink the basic volume from the volumes list and dismount it */ PartEntry->Volume = NULL; Volume->PartEntry = NULL; RemoveEntryList(&Volume->ListEntry); Status = DismountVolume(&Volume->Info, TRUE); RtlFreeHeap(ProcessHeap, 0, Volume); return Status; } BOOLEAN DeletePartition( _In_ PPARTLIST List, _In_ PPARTENTRY PartEntry, _Out_opt_ PPARTENTRY* FreeRegion) { 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; } static BOOLEAN IsSupportedActivePartition( IN PPARTENTRY PartEntry) { PVOLENTRY Volume; /* Check the type and the file system of this partition */ /* * We do not support extended partition containers (on MBR disks) marked * as active, and containing code inside their extended boot records. */ if (IsContainerPartition(PartEntry->PartitionType)) { DPRINT1("System partition %lu in disk %lu is an extended partition container?!\n", PartEntry->PartitionNumber, PartEntry->DiskEntry->DiskNumber); return FALSE; } Volume = PartEntry->Volume; if (!Volume) { /* Still no recognizable volume mounted: partition not supported */ return FALSE; } /* * ADDITIONAL CHECKS / BIG HACK: * * Retrieve its file system and check whether we have * write support for it. If that is the case we are fine * and we can use it directly. However if we don't have * write support we will need to change the active system * partition. * * NOTE that this is completely useless on architectures * where a real system partition is required, as on these * architectures the partition uses the FAT FS, for which * we do have write support. * NOTE also that for those architectures looking for a * partition boot indicator is insufficient. */ if (Volume->FormatState == Unformatted) { /* If this partition is mounted, it would use RawFS ("RAW") */ return TRUE; } else if (Volume->FormatState == Formatted) { ASSERT(*Volume->Info.FileSystem); /* NOTE: Please keep in sync with the RegisteredFileSystems list! */ if (_wcsicmp(Volume->Info.FileSystem, L"FAT") == 0 || _wcsicmp(Volume->Info.FileSystem, L"FAT32") == 0 || // _wcsicmp(Volume->Info.FileSystem, L"NTFS") == 0 || _wcsicmp(Volume->Info.FileSystem, L"BTRFS") == 0) { return TRUE; } else { // WARNING: We cannot write on this FS yet! DPRINT1("Recognized file system '%S' that doesn't have write support yet!\n", Volume->Info.FileSystem); return FALSE; } } else // if (Volume->FormatState == UnknownFormat) { ASSERT(!*Volume->Info.FileSystem); DPRINT1("System partition %lu in disk %lu with no or unknown FS?!\n", PartEntry->PartitionNumber, PartEntry->DiskEntry->DiskNumber); return FALSE; } // HACK: WARNING: We cannot write on this FS yet! // See fsutil.c:InferFileSystem() if (PartEntry->PartitionType == PARTITION_IFS) { DPRINT1("Recognized file system '%S' that doesn't have write support yet!\n", Volume->Info.FileSystem); return FALSE; } return TRUE; } PPARTENTRY FindSupportedSystemPartition( IN PPARTLIST List, IN BOOLEAN ForceSelect, IN PDISKENTRY AlternativeDisk OPTIONAL, IN PPARTENTRY AlternativePart OPTIONAL) { 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->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->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->Info.DriveLetter ? L'-' : CandidatePartition->Volume->Info.DriveLetter); /* Return the candidate system partition */ return CandidatePartition; } BOOLEAN SetActivePartition( IN PPARTLIST List, IN PPARTENTRY PartEntry, IN PPARTENTRY OldActivePart OPTIONAL) { /* 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; } NTSTATUS WritePartitions( IN PDISKENTRY DiskEntry) { 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; } BOOLEAN WritePartitionsToDisk( IN PPARTLIST List) { NTSTATUS Status; PLIST_ENTRY Entry; PDISKENTRY DiskEntry; PVOLENTRY Volume; if (!List) return TRUE; /* 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); } return TRUE; } /** * @brief * Assign a "\DosDevices\#:" mount point drive letter to a disk partition or * volume, specified by a given disk signature and starting partition offset. **/ static BOOLEAN SetMountedDeviceValue( _In_ PVOLENTRY Volume) { PPARTENTRY PartEntry = Volume->PartEntry; WCHAR Letter = Volume->Info.DriveLetter; NTSTATUS Status; OBJECT_ATTRIBUTES ObjectAttributes; UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"SYSTEM\\MountedDevices"); UNICODE_STRING ValueName; WCHAR Buffer[16]; HANDLE KeyHandle; REG_DISK_MOUNT_INFO MountInfo; /* Ignore no letter */ if (!Letter) return TRUE; RtlStringCchPrintfW(Buffer, _countof(Buffer), L"\\DosDevices\\%c:", Letter); RtlInitUnicodeString(&ValueName, Buffer); InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE, GetRootKeyByPredefKey(HKEY_LOCAL_MACHINE, NULL), NULL); Status = NtOpenKey(&KeyHandle, KEY_ALL_ACCESS, &ObjectAttributes); if (!NT_SUCCESS(Status)) { Status = NtCreateKey(&KeyHandle, KEY_ALL_ACCESS, &ObjectAttributes, 0, NULL, REG_OPTION_NON_VOLATILE, NULL); } if (!NT_SUCCESS(Status)) { DPRINT1("NtCreateKey() failed (Status %lx)\n", Status); return FALSE; } MountInfo.Signature = PartEntry->DiskEntry->LayoutBuffer->Signature; MountInfo.StartingOffset = GetPartEntryOffsetInBytes(PartEntry); Status = NtSetValueKey(KeyHandle, &ValueName, 0, REG_BINARY, (PVOID)&MountInfo, sizeof(MountInfo)); NtClose(KeyHandle); if (!NT_SUCCESS(Status)) { DPRINT1("NtSetValueKey() failed (Status %lx)\n", Status); return FALSE; } return TRUE; } BOOLEAN SetMountedDeviceValues( _In_ PPARTLIST List) { 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; } VOID SetMBRPartitionType( IN PPARTENTRY PartEntry, IN UCHAR PartitionType) { 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; } /* EOF */