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windows-nt/Source/XPSP1/NT/base/remoteboot/imirror/ckmach.c

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/*++
Copyright (c) 1998 Microsoft Corporation
Module Name:
ckmach.c
Abstract:
This is for supporting checking a machine to see if it can be converted to IntelliMirror.
Author:
Sean Selitrennikoff - 4/5/98
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
#include <ntverp.h>
PMIRROR_CFG_INFO GlobalMirrorCfgInfo = NULL;
//
// Support functions to do individual tasks
//
NTSTATUS
AddCheckMachineToDoItems(
VOID
)
/*++
Routine Description:
This routine adds all the to do items necessary for checking out the local machine for
conversion.
Arguments:
None
Return Value:
STATUS_SUCCESS if it completes adding all the to do items properly.
--*/
{
NTSTATUS Status;
Status = AddToDoItem(VerifySystemIsNt5, NULL, 0);
if (!NT_SUCCESS(Status)) {
IMirrorHandleError(Status, IMirrorInitialize);
return Status;
}
return STATUS_SUCCESS;
}
NTSTATUS
CheckIfNt5(
IN PVOID pBuffer,
IN ULONG Length
)
/*++
Routine Description:
This routine verifies that the current system is NT5 workstation, x86
Arguments:
pBuffer - Pointer to any arguments passed in the to do item.
Length - Length, in bytes of the arguments.
Return Value:
STATUS_SUCCESS if it completes adding all the to do items properly.
--*/
{
OSVERSIONINFO OsVersion;
DWORD productVersion[] = { VER_PRODUCTVERSION };
IMirrorNowDoing(VerifySystemIsNt5, NULL);
RtlZeroMemory(&OsVersion, sizeof(OSVERSIONINFO));
OsVersion.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&OsVersion)) {
IMirrorHandleError(GetLastError(), VerifySystemIsNt5);
return GetLastError();
}
if (OsVersion.dwPlatformId != VER_PLATFORM_WIN32_NT) {
IMirrorHandleError(ERROR_OLD_WIN_VERSION, VerifySystemIsNt5);
return ERROR_OLD_WIN_VERSION;
}
if (OsVersion.dwMajorVersion != productVersion[0]) {
IMirrorHandleError(ERROR_OLD_WIN_VERSION, VerifySystemIsNt5);
return ERROR_OLD_WIN_VERSION;
}
//
// We're changing the format of the alternate data stream. As such,
// we're introducing an incompatiblility. We'll pick this up here and
// return to riprep.exe the error. Otherwise the user doesn't find out
// about it until text mode setup on restoring the image.
//
// The NT build number that this is getting checked into is 2080.
//
if (OsVersion.dwBuildNumber < 2080) {
DbgPrint("build number is %u\n", OsVersion.dwBuildNumber);
IMirrorHandleError(ERROR_OLD_WIN_VERSION, VerifySystemIsNt5);
return ERROR_OLD_WIN_VERSION;
}
return STATUS_SUCCESS;
}
BOOLEAN
ReadRegistryString(
IN PWCHAR KeyName,
IN PWCHAR ValueName,
IN PVOID Buffer,
IN ULONG BufferLength
)
/*++
Routine Description:
This routine reads a string from the registry into Buffer.
Arguments:
KeyName - The registry key.
ValueName - The value under that key to read, or NULL if the name of
the first key under that key is to be read.
Buffer - The buffer to hold the result.
BufferLength - The length of Buffer.
Return Value:
TRUE if success, FALSE if any errors occur.
--*/
{
UNICODE_STRING UnicodeString;
OBJECT_ATTRIBUTES ObjectAttributes;
PKEY_VALUE_PARTIAL_INFORMATION pValueInfo = NULL;
PKEY_BASIC_INFORMATION pKeyInfo = NULL;
HANDLE Handle = NULL;
ULONG ByteCount;
ULONG BytesLeft;
PBYTE pBuffer;
NTSTATUS Status;
PVOID ResultData;
ULONG ResultDataLength;
BOOLEAN ReturnValue = FALSE;
//
//
// Open the key.
//
//
RtlInitUnicodeString(&UnicodeString, KeyName);
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenKey(&Handle,
KEY_ALL_ACCESS,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
goto Cleanup;
}
if (ValueName != NULL) {
RtlInitUnicodeString(&UnicodeString, ValueName);
//
// Get the size of the buffer needed
//
ByteCount = 0;
Status = NtQueryValueKey(Handle,
&UnicodeString,
KeyValuePartialInformation,
NULL,
0,
&ByteCount
);
if (Status != STATUS_BUFFER_TOO_SMALL) {
goto Cleanup;
}
pValueInfo = (PKEY_VALUE_PARTIAL_INFORMATION)IMirrorAllocMem(ByteCount);
if (pValueInfo == NULL) {
goto Cleanup;
}
//
// Get the buffer from the registry
//
Status = NtQueryValueKey(Handle,
&UnicodeString,
KeyValuePartialInformation,
pValueInfo,
ByteCount,
&ByteCount
);
if (!NT_SUCCESS(Status)) {
goto Cleanup;
}
if (pValueInfo->Type != REG_SZ) {
goto Cleanup;
}
ResultData = pValueInfo->Data;
ResultDataLength = pValueInfo->DataLength;
} else {
//
// Get the size of the buffer needed
//
ByteCount = 0;
Status = NtEnumerateKey(Handle,
0,
KeyBasicInformation,
NULL,
0,
&ByteCount
);
if (Status != STATUS_BUFFER_TOO_SMALL) {
goto Cleanup;
}
pKeyInfo = (PKEY_BASIC_INFORMATION)IMirrorAllocMem(ByteCount);
if (pKeyInfo == NULL) {
goto Cleanup;
}
//
// Get the name from the registry
//
Status = NtEnumerateKey(Handle,
0,
KeyBasicInformation,
pKeyInfo,
ByteCount,
&ByteCount
);
if (!NT_SUCCESS(Status)) {
goto Cleanup;
}
ResultData = pKeyInfo->Name;
ResultDataLength = pKeyInfo->NameLength;
}
if (ResultDataLength > BufferLength) {
goto Cleanup;
}
memcpy(Buffer, ResultData, ResultDataLength);
//
// NULL-terminate it just in case, if there is room.
//
if (ResultDataLength <= BufferLength - sizeof(WCHAR)) {
((PWCHAR)Buffer)[ResultDataLength / sizeof(WCHAR)] = L'\0';
}
ReturnValue = TRUE;
Cleanup:
if (pValueInfo != NULL) {
IMirrorFreeMem(pValueInfo);
}
if (pKeyInfo != NULL) {
IMirrorFreeMem(pKeyInfo);
}
if (Handle != NULL) {
NtClose(Handle);
}
return ReturnValue;
}
NTSTATUS
CheckForPartitions(
IN PVOID pBuffer,
IN ULONG Length
)
/*++
Routine Description:
This routine enumerates all partitions and formats the GlobalMirrorCfgInfo
global structure.
It also fills in the pConfigPath.
Arguments:
pBuffer - Pointer to any arguments passed in the to do item.
Length - Length, in bytes of the arguments.
Return Value:
STATUS_SUCCESS if it completes adding all the to do items properly.
--*/
{
UNICODE_STRING UnicodeString;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatus;
PARTITION_INFORMATION_EX PartitionInfoEx;
PARTITION_INFORMATION PartitionInfo;
HANDLE Handle;
ULONG MirrorNumber;
ULONG DiskNumber;
ULONG PartitionNumber;
PULONG pTmpUlong;
NTSTATUS Status;
BOOLEAN foundBoot = FALSE;
BOOLEAN foundSystem = FALSE;
FILE_FS_SIZE_INFORMATION SizeInfo;
LARGE_INTEGER UsedSpace;
LARGE_INTEGER FreeSpace;
ON_DISK_MBR OnDiskMbr;
PUCHAR AlignedBuffer;
UINT previousMode;
HANDLE DosDevicesDir;
ULONG Context;
WCHAR SystemDriveLetter;
POBJECT_DIRECTORY_INFORMATION DirInfo;
ULONG dosLength;
BOOLEAN RestartScan;
PMIRROR_VOLUME_INFO mirrorVolInfo;
ULONG diskSignature;
DWORD fileSystemFlags;
WCHAR fileSystemName[16];
WCHAR volumeLabel[33];
ULONG volumeLabelLength;
WCHAR arcName[MAX_PATH];
ULONG ntNameLength;
ULONG arcNameLength;
OSVERSIONINFO osVersionInfo;
SYSTEM_INFO systemInfo;
DWORD fileVersionInfoSize;
DWORD versionHandle;
PVOID versionInfo;
VS_FIXEDFILEINFO * fixedFileInfo;
UINT fixedFileInfoLength;
WCHAR kernelPath[MAX_PATH];
PWCHAR kernelPathPart;
WCHAR versionString[64];
BOOL b;
#ifndef IMIRROR_NO_TESTING_LIMITATIONS
ULONG numberOfDrives = 0;
#endif
BOOLEAN isDynamic = FALSE;
BOOLEAN UsePartitionInfoEx = TRUE;
IMirrorNowDoing(CheckPartitions, NULL);
if (GlobalMirrorCfgInfo) {
return STATUS_SUCCESS;
}
GlobalMirrorCfgInfo = IMirrorAllocMem(sizeof(MIRROR_CFG_INFO));
if (GlobalMirrorCfgInfo == NULL) {
Status = STATUS_NO_MEMORY;
IMirrorHandleError(Status, CheckPartitions);
return Status;
}
//
// Disable hard error popups for this thread.
//
previousMode = SetErrorMode( SEM_FAILCRITICALERRORS );
GlobalMirrorCfgInfo->MirrorVersion = IMIRROR_CURRENT_VERSION;
GlobalMirrorCfgInfo->FileLength = 0;
GlobalMirrorCfgInfo->SystemPath = NULL;
GlobalMirrorCfgInfo->SysPrepImage = TRUE;
GlobalMirrorCfgInfo->NumberVolumes = 0;
osVersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (GetVersionEx(&osVersionInfo)) {
GlobalMirrorCfgInfo->MajorVersion = osVersionInfo.dwMajorVersion;
GlobalMirrorCfgInfo->MinorVersion = osVersionInfo.dwMinorVersion;
GlobalMirrorCfgInfo->BuildNumber = osVersionInfo.dwBuildNumber;
lstrcpyW(pCSDVersion, osVersionInfo.szCSDVersion);
GlobalMirrorCfgInfo->CSDVersion = pCSDVersion;
}
if (SearchPath(
NULL,
L"ntoskrnl.exe",
NULL,
MAX_PATH,
kernelPath,
&kernelPathPart)) {
fileVersionInfoSize = GetFileVersionInfoSize(kernelPath, &versionHandle);
if (fileVersionInfoSize != 0) {
versionInfo = IMirrorAllocMem(fileVersionInfoSize);
if (versionInfo != NULL) {
if (GetFileVersionInfo(
kernelPath,
versionHandle,
fileVersionInfoSize,
versionInfo)) {
if (VerQueryValue(
versionInfo,
L"\\",
&fixedFileInfo,
&fixedFileInfoLength)) {
GlobalMirrorCfgInfo->KernelFileVersionMS = fixedFileInfo->dwFileVersionMS;
GlobalMirrorCfgInfo->KernelFileVersionLS = fixedFileInfo->dwFileVersionLS;
GlobalMirrorCfgInfo->KernelFileFlags = fixedFileInfo->dwFileFlags;
DbgPrint("MS %lx LS %lx flags %lx\n",
GlobalMirrorCfgInfo->KernelFileVersionMS,
GlobalMirrorCfgInfo->KernelFileVersionLS,
GlobalMirrorCfgInfo->KernelFileFlags);
}
}
IMirrorFreeMem(versionInfo);
}
}
}
if (GetSystemMetrics(SM_DEBUG)) {
GlobalMirrorCfgInfo->Debug = TRUE;
}
GetSystemInfo(&systemInfo);
GlobalMirrorCfgInfo->NumberOfProcessors = systemInfo.dwNumberOfProcessors;
if (ReadRegistryString(
L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Session Manager\\Environment",
L"PROCESSOR_ARCHITECTURE",
pProcessorArchitecture,
sizeof(pProcessorArchitecture))) {
DbgPrint("processor arch is %ws\n", pProcessorArchitecture);
GlobalMirrorCfgInfo->ProcessorArchitecture = pProcessorArchitecture;
}
if (ReadRegistryString(
L"\\Registry\\Machine\\Software\\Microsoft\\Windows NT\\CurrentVersion",
L"CurrentType",
pCurrentType,
sizeof(pCurrentType))) {
DbgPrint("current type is %ws\n", pCurrentType);
GlobalMirrorCfgInfo->CurrentType = pCurrentType;
}
if (ReadRegistryString(
L"\\Registry\\Machine\\Hardware\\RESOURCEMAP\\Hardware Abstraction Layer",
NULL,
pHalName,
sizeof(pHalName))) {
DbgPrint("HAL name is %ws\n", pHalName);
GlobalMirrorCfgInfo->HalName = pHalName;
}
InitializeListHead( &GlobalMirrorCfgInfo->MirrorVolumeList );
//
// Get local system drive letter and \\Systemroot\System32\Config path
//
Status = GetBaseDeviceName(L"\\SystemRoot", (PWCHAR)TmpBuffer2, sizeof(TmpBuffer2));
if (!NT_SUCCESS(Status)) {
IMirrorHandleError(Status, CheckPartitions);
goto ExitCheckPartitions;
}
Status = NtPathToDosPath( (PWCHAR) TmpBuffer2,
pConfigPath,
FALSE,
FALSE);
if (!NT_SUCCESS(Status)) {
IMirrorHandleError(Status, CheckPartitions);
goto ExitCheckPartitions;
}
ASSERT( pConfigPath[1] == L':' );
SystemDriveLetter = (WCHAR) pConfigPath[0];
//
// save off the system path so that we can write it out to
// the imirror.dat file
//
lstrcpyW( pSystemPath, pConfigPath );
GlobalMirrorCfgInfo->SystemPath = pSystemPath;
wcscat( pConfigPath, L"\\System32\\Config");
//
// Open \DosDevices directory.
//
RtlInitUnicodeString(&UnicodeString,L"\\Device");
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenDirectoryObject(&DosDevicesDir,
DIRECTORY_QUERY,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
IMirrorHandleError(Status, CheckPartitions);
goto ExitCheckPartitions;
}
//
// Iterate each object in that directory that is a directory.
//
Context = 0;
RestartScan = TRUE;
Status = NtQueryDirectoryObject(DosDevicesDir,
TmpBuffer,
sizeof(TmpBuffer),
TRUE,
RestartScan,
&Context,
&dosLength
);
RestartScan = FALSE;
DirInfo = (POBJECT_DIRECTORY_INFORMATION)TmpBuffer;
MirrorNumber = 1;
while (NT_SUCCESS(Status)) {
DirInfo->Name.Buffer[DirInfo->Name.Length/sizeof(WCHAR)] = 0;
DirInfo->TypeName.Buffer[DirInfo->TypeName.Length/sizeof(WCHAR)] = 0;
//
// Skip this entry if it's not a "HardDiskN"
//
if ((DirInfo->Name.Length > (sizeof(L"Harddisk")-sizeof(WCHAR))) &&
(!wcsncmp(DirInfo->Name.Buffer,L"Harddisk",(sizeof(L"Harddisk")/sizeof(WCHAR))-1)) &&
!lstrcmpi(DirInfo->TypeName.Buffer, L"Directory")) {
PWCHAR diskNumberPtr;
PartitionNumber = 0;
DiskNumber = 0;
diskNumberPtr = &DirInfo->Name.Buffer[(sizeof(L"Harddisk")/sizeof(WCHAR))-1];
while (*diskNumberPtr >= L'0' && *diskNumberPtr <= L'9' ) {
DiskNumber *= 10;
DiskNumber += *(diskNumberPtr) - L'0';
diskNumberPtr++;
}
if (*diskNumberPtr != L'\0') {
//
// if the device name wasn't of form HardDiskN, skip this entry.
//
goto getNextDevice;
}
diskSignature = 0;
//
// get the disk signature, continue if it fails.
//
swprintf((PWCHAR)TmpBuffer2, L"\\Device\\Harddisk%d\\Partition0", DiskNumber);
RtlInitUnicodeString(&UnicodeString, (PWCHAR)TmpBuffer2);
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtCreateFile(&Handle,
(ACCESS_MASK)FILE_GENERIC_READ,
&ObjectAttributes,
&IoStatus,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ,
FILE_OPEN,
FILE_SYNCHRONOUS_IO_NONALERT,
NULL,
0
);
if (NT_SUCCESS(Status)) {
ASSERT(sizeof(ON_DISK_MBR) == 512);
AlignedBuffer = ALIGN(TmpBuffer, 512);
Status = NtReadFile(Handle,
NULL,
NULL,
NULL,
&IoStatus,
AlignedBuffer,
sizeof(ON_DISK_MBR),
NULL,
NULL
);
if (NT_SUCCESS(Status)) {
RtlMoveMemory(&OnDiskMbr, AlignedBuffer, sizeof(ON_DISK_MBR));
ASSERT(U_USHORT(OnDiskMbr.AA55Signature) == 0xAA55);
diskSignature = U_ULONG(OnDiskMbr.NTFTSignature);
//
// check to see if this disk is dynamic
//
if (OnDiskMbr.PartitionTable[0].SystemId == PARTITION_LDM ||
OnDiskMbr.PartitionTable[1].SystemId == PARTITION_LDM ||
OnDiskMbr.PartitionTable[2].SystemId == PARTITION_LDM ||
OnDiskMbr.PartitionTable[3].SystemId == PARTITION_LDM) {
isDynamic = TRUE;
NtClose(Handle);
goto getNextDevice;
}
}
NtClose(Handle);
}
while (1) {
PartitionNumber++;
swprintf((PWCHAR)TmpBuffer2, L"\\Device\\Harddisk%d\\Partition%d", DiskNumber, PartitionNumber);
RtlInitUnicodeString(&UnicodeString, (PWCHAR)TmpBuffer2);
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtCreateFile(&Handle,
(ACCESS_MASK)FILE_GENERIC_READ,
&ObjectAttributes,
&IoStatus,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ | FILE_SHARE_WRITE,
FILE_OPEN,
FILE_SYNCHRONOUS_IO_NONALERT,
NULL,
0
);
if (!NT_SUCCESS(Status)) {
break; // on to next disk
}
Status = NtDeviceIoControlFile(Handle,
NULL,
NULL,
NULL,
&IoStatus,
IOCTL_DISK_GET_PARTITION_INFO_EX,
NULL,
0,
&PartitionInfoEx,
sizeof(PARTITION_INFORMATION_EX) );
if( (Status == STATUS_NOT_IMPLEMENTED) || (Status == STATUS_INVALID_DEVICE_REQUEST) ) {
//
// We're on an old build that didn't have this IOCTL.
//
UsePartitionInfoEx = FALSE;
Status = NtDeviceIoControlFile(Handle,
NULL,
NULL,
NULL,
&IoStatus,
IOCTL_DISK_GET_PARTITION_INFO,
NULL,
0,
&PartitionInfo,
sizeof(PARTITION_INFORMATION) );
}
if (!NT_SUCCESS(Status)) {
NtClose(Handle);
continue; // on to next partition
}
//
// For Whistler, ignore GPT partitions.
//
if( (UsePartitionInfoEx) && (PartitionInfoEx.PartitionStyle != PARTITION_STYLE_MBR) ) {
NtClose(Handle);
continue;
}
Status = NtQueryVolumeInformationFile(Handle,
&IoStatus,
&SizeInfo,
sizeof(SizeInfo),
FileFsSizeInformation );
NtClose(Handle);
if (!NT_SUCCESS(Status)) {
continue; // on to next partition
}
Status = NtPathToDosPath( (PWCHAR) TmpBuffer2,
(PWCHAR) TmpBuffer,
TRUE,
FALSE);
if (!NT_SUCCESS(Status)) {
continue; // on to next partition
}
if ((lstrlenW((PWCHAR) TmpBuffer) == 0) ||
*(((PWCHAR)TmpBuffer)+1) != L':') {
continue; // on to next partition
}
//
// Get the ARC name of the partition.
//
NtNameToArcName( (PWCHAR) TmpBuffer2,
(PWCHAR) arcName,
FALSE);
//
// Get the file system type. We add a \ to the end
// of TmpBuffer if there isn't one.
//
if (((PWCHAR)TmpBuffer)[lstrlenW((PWCHAR)TmpBuffer) - 1] != L'\\') {
wcscat((PWCHAR)TmpBuffer, L"\\");
}
b = GetVolumeInformationW(
(PWCHAR) TmpBuffer,
volumeLabel,
ARRAYSIZE(volumeLabel),
NULL, // no volume serial number requested
NULL, // no maximum name length requested
&fileSystemFlags,
fileSystemName,
ARRAYSIZE(fileSystemName));
if (!b) {
continue;
}
//
// Calculate the amount of free space on the drive.
//
FreeSpace = RtlExtendedIntegerMultiply(
SizeInfo.AvailableAllocationUnits,
SizeInfo.SectorsPerAllocationUnit * SizeInfo.BytesPerSector
);
UsedSpace = RtlExtendedIntegerMultiply(
SizeInfo.TotalAllocationUnits,
SizeInfo.SectorsPerAllocationUnit * SizeInfo.BytesPerSector
);
UsedSpace = RtlLargeIntegerSubtract(
UsedSpace,
FreeSpace
);
#ifndef IMIRROR_NO_TESTING_LIMITATIONS
numberOfDrives++;
//
// for NT 5.0, the test group doesn't want to test more than a single
// partition. Now that the test team is dictating what the feature set
// is, we'll return an error if we have more than a single partition or
// disk.
//
if ( (UsePartitionInfoEx && !PartitionInfoEx.Mbr.BootIndicator) ||
(!UsePartitionInfoEx && !PartitionInfo.BootIndicator)) {
if (*(PWCHAR)TmpBuffer == SystemDriveLetter) {
IMirrorHandleError(STATUS_MISSING_SYSTEMFILE, CheckPartitions);
NtClose(DosDevicesDir);
Status = STATUS_MISSING_SYSTEMFILE;
goto ExitCheckPartitions;
}
continue;
}
if (*(PWCHAR)TmpBuffer != SystemDriveLetter) {
// if another drive is marked bootable but it isn't the
// system drive, we'll ignore it. We'll pick up the
// error down below if this is the only bootable drive.
#if 0
if ( (UsePartitionInfoEx && PartitionInfoEx.Mbr.BootIndicator) ||
(!UsePartitionInfoEx && PartitionInfo.BootIndicator)) {
IMirrorHandleError(STATUS_MISSING_SYSTEMFILE, CheckPartitions);
NtClose(DosDevicesDir);
Status = STATUS_MISSING_SYSTEMFILE;
goto ExitCheckPartitions;
}
#endif
continue;
}
#endif
mirrorVolInfo = IMirrorAllocMem(sizeof(MIRROR_VOLUME_INFO));
if (mirrorVolInfo == NULL) {
NtClose(DosDevicesDir);
Status = STATUS_NO_MEMORY;
IMirrorHandleError(Status, CheckPartitions);
goto ExitCheckPartitions;
}
//
// Save the NT and ARC device names.
//
ntNameLength = (lstrlenW( (PWCHAR)TmpBuffer2 ) + 1) * sizeof(WCHAR);
mirrorVolInfo->NtName = IMirrorAllocMem(ntNameLength);
if (mirrorVolInfo->NtName == NULL) {
Status = STATUS_NO_MEMORY;
IMirrorHandleError(Status, CheckPartitions);
NtClose(DosDevicesDir);
goto ExitCheckPartitions;
}
arcNameLength = (lstrlenW( (PWCHAR)arcName ) + 1) * sizeof(WCHAR);
mirrorVolInfo->ArcName = IMirrorAllocMem(arcNameLength);
if (mirrorVolInfo->ArcName == NULL) {
Status = STATUS_NO_MEMORY;
IMirrorHandleError(Status, CheckPartitions);
NtClose(DosDevicesDir);
goto ExitCheckPartitions;
}
memcpy(mirrorVolInfo->NtName, TmpBuffer2, ntNameLength);
memcpy(mirrorVolInfo->ArcName, arcName, arcNameLength);
mirrorVolInfo->DriveLetter = *(PWCHAR)TmpBuffer;
mirrorVolInfo->PartitionType = UsePartitionInfoEx ? PartitionInfoEx.Mbr.PartitionType : PartitionInfo.PartitionType;
//
// If this is a non-NTFS volume, check if it is configured
// for compression
//
if ( ((UsePartitionInfoEx && (PartitionInfoEx.Mbr.PartitionType != PARTITION_IFS)) ||
(!UsePartitionInfoEx && (PartitionInfo.PartitionType != PARTITION_IFS)))
&&
(fileSystemFlags & FS_VOL_IS_COMPRESSED) ) {
mirrorVolInfo->CompressedVolume = TRUE;
} else {
mirrorVolInfo->CompressedVolume = FALSE;
}
if ( (UsePartitionInfoEx && (PartitionInfoEx.Mbr.BootIndicator)) ||
(!UsePartitionInfoEx && (PartitionInfo.BootIndicator)) ) {
foundBoot = TRUE;
mirrorVolInfo->PartitionActive = TRUE;
} else {
mirrorVolInfo->PartitionActive = FALSE;
}
if (*(PWCHAR)TmpBuffer == SystemDriveLetter) {
foundSystem = TRUE;
mirrorVolInfo->IsBootDisk = TRUE;
} else {
mirrorVolInfo->IsBootDisk = FALSE;
}
mirrorVolInfo->DiskNumber = DiskNumber;
mirrorVolInfo->PartitionNumber = PartitionNumber;
mirrorVolInfo->MirrorTableIndex = MirrorNumber++;
mirrorVolInfo->MirrorUncPath = NULL;
mirrorVolInfo->LastUSNMirrored = 0;
mirrorVolInfo->BlockSize = SizeInfo.BytesPerSector;
mirrorVolInfo->DiskSignature = diskSignature;
mirrorVolInfo->FileSystemFlags = fileSystemFlags;
wcscpy(mirrorVolInfo->FileSystemName, fileSystemName);
volumeLabelLength = (lstrlenW( (PWCHAR)volumeLabel ) + 1) * sizeof(WCHAR);
mirrorVolInfo->VolumeLabel = IMirrorAllocMem(volumeLabelLength);
if (mirrorVolInfo->VolumeLabel == NULL) {
Status = STATUS_NO_MEMORY;
IMirrorHandleError(Status, CheckPartitions);
NtClose(DosDevicesDir);
goto ExitCheckPartitions;
}
memcpy(mirrorVolInfo->VolumeLabel, volumeLabel, volumeLabelLength);
mirrorVolInfo->StartingOffset = UsePartitionInfoEx ? PartitionInfoEx.StartingOffset : PartitionInfo.StartingOffset;
mirrorVolInfo->PartitionSize = UsePartitionInfoEx ? PartitionInfoEx.PartitionLength : PartitionInfo.PartitionLength;
mirrorVolInfo->DiskSpaceUsed = UsedSpace;
InsertTailList( &GlobalMirrorCfgInfo->MirrorVolumeList,
&mirrorVolInfo->ListEntry );
GlobalMirrorCfgInfo->NumberVolumes = MirrorNumber - 1;
}
}
//
// Go on to next object.
//
getNextDevice:
Status = NtQueryDirectoryObject(
DosDevicesDir,
TmpBuffer,
sizeof(TmpBuffer),
TRUE,
RestartScan,
&Context,
&dosLength
);
}
NtClose(DosDevicesDir);
if ((!foundBoot) || (!foundSystem) ) {
Status = (isDynamic ? STATUS_OBJECT_TYPE_MISMATCH : STATUS_MISSING_SYSTEMFILE);
IMirrorHandleError(Status, CheckPartitions);
goto ExitCheckPartitions;
}
#ifndef IMIRROR_NO_TESTING_LIMITATIONS
if (numberOfDrives > 1) {
IMirrorHandleError(ERROR_INVALID_DRIVE, CheckPartitions);
Status = ERROR_INVALID_DRIVE;
} else {
Status = STATUS_SUCCESS;
}
#else
Status = STATUS_SUCCESS;
#endif
ExitCheckPartitions:
SetErrorMode( previousMode );
return Status;
}
NTSTATUS
NtPathToDosPath(
IN PWSTR NtPath,
OUT PWSTR DosPath,
IN BOOLEAN GetDriveOnly,
IN BOOLEAN NtPathIsBasic
)
/*++
Routine Description:
This routine calls off to convert a \Device\HarddiskX\PartitionY\<path> to Z:\<path>
Arguments:
NtPath - Something like \Device\Harddisk0\Partition2\WINNT
DosPath - Will be something like D: or D:\WINNT, depending on flag below.
GetDriveOnly - TRUE if the caller only wants the DOS drive.
NtPathIsBasic - TRUE if NtPath is not symbolic link.
Return Value:
STATUS_SUCCESS if it completes filling in DosDrive, else an appropriate error code.
--*/
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING UnicodeString;
NTSTATUS Status;
HANDLE DosDevicesDir;
HANDLE DosDevicesObj;
HANDLE ObjectHandle;
ULONG Context;
ULONG Length;
BOOLEAN RestartScan;
WCHAR LinkTarget[2*MAX_PATH];
POBJECT_DIRECTORY_INFORMATION DirInfo;
WCHAR LocalBuffer[MAX_PATH];
WCHAR LocalBuffer2[MAX_PATH];
PWCHAR pTmp;
PWCHAR NameSpace[] = { L"\\??", L"\\GLOBAL??" };
UINT i;
if (NtPath == NULL) {
return ERROR_PATH_NOT_FOUND;
}
if (!NtPathIsBasic) {
//
// Find the end of the \device\harddiskX\partitionY string
//
wcscpy(LocalBuffer2, NtPath);
pTmp = LocalBuffer2;
if (*pTmp != L'\\') {
return ERROR_PATH_NOT_FOUND;
}
pTmp = wcsstr(pTmp + 1, L"\\");
if (pTmp == NULL) {
return ERROR_PATH_NOT_FOUND;
}
pTmp = wcsstr(pTmp + 1, L"\\");
if (pTmp == NULL) {
return ERROR_PATH_NOT_FOUND;
}
pTmp = wcsstr(pTmp + 1, L"\\");
if (pTmp != NULL) {
*pTmp = UNICODE_NULL;
pTmp++;
}
//
// Find the base NT device name
//
Status = GetBaseDeviceName(LocalBuffer2, LocalBuffer, sizeof(LocalBuffer));
if (!NT_SUCCESS(Status)) {
return Status;
}
} else {
wcscpy(LocalBuffer, NtPath);
pTmp = NULL;
}
//
// Open \DosDevices directory. First try the "normal" dosdevices path,
// then try the global dosdevices path.
//
for (i = 0; i < sizeof(NameSpace)/sizeof(PWCHAR *); i++) {
RtlInitUnicodeString(&UnicodeString,NameSpace[i]);
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenDirectoryObject(&DosDevicesDir,
DIRECTORY_QUERY,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
DosDevicesDir = NULL;
} else {
//
// Iterate each object in that directory.
//
Context = 0;
RestartScan = TRUE;
Status = NtQueryDirectoryObject(DosDevicesDir,
TmpBuffer3,
sizeof(TmpBuffer3),
TRUE,
RestartScan,
&Context,
&Length
);
RestartScan = FALSE;
DirInfo = (POBJECT_DIRECTORY_INFORMATION)TmpBuffer3;
while (NT_SUCCESS(Status)) {
DirInfo->Name.Buffer[DirInfo->Name.Length/sizeof(WCHAR)] = 0;
DirInfo->TypeName.Buffer[DirInfo->TypeName.Length/sizeof(WCHAR)] = 0;
//
// Skip this entry if it's not a symbolic link.
//
if ((DirInfo->Name.Length != 0) &&
(DirInfo->Name.Buffer[1] == L':') &&
!lstrcmpi(DirInfo->TypeName.Buffer, L"SymbolicLink")) {
//
// Get this \DosDevices object's link target.
//
swprintf(LocalBuffer2, L"%ws\\%ws", NameSpace[i], DirInfo->Name.Buffer);
Status = GetBaseDeviceName(LocalBuffer2, LinkTarget, sizeof(LinkTarget));
if (NT_SUCCESS(Status)) {
//
// See if it's a prefix of the path we're converting,
//
if(!_wcsnicmp(LocalBuffer, LinkTarget, wcslen(LinkTarget))) {
//
// Got a match.
//
lstrcpy(DosPath, DirInfo->Name.Buffer);
if (!GetDriveOnly) {
if (NtPathIsBasic) {
lstrcat(DosPath, LocalBuffer + wcslen(LinkTarget));
} else if (pTmp != NULL) {
lstrcat(DosPath, L"\\");
lstrcat(DosPath, pTmp);
}
}
NtClose(DosDevicesDir);
return(STATUS_SUCCESS);
}
}
}
//
// Go on to next object.
//
Status = NtQueryDirectoryObject(
DosDevicesDir,
TmpBuffer3,
sizeof(TmpBuffer3),
TRUE,
RestartScan,
&Context,
&Length
);
}
NtClose(DosDevicesDir);
}
}
return(Status);
}
NTSTATUS
NtNameToArcName(
IN PWSTR NtName,
OUT PWSTR ArcName,
IN BOOLEAN NtNameIsBasic
)
/*++
Routine Description:
This routine calls off to convert a \Device\HarddiskX\PartitionY to
the ARC name.
Arguments:
NtPath - Something like \Device\Harddisk0\Partition2
DosPath - Will be something like \Arcname\multi(0)disk(0)rdisk(0)partition(1).
NtNameIsBasic - TRUE if NtName is not symbolic link.
Return Value:
STATUS_SUCCESS if it completes filling in ArcName, else an appropriate error code.
--*/
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING UnicodeString;
NTSTATUS Status;
HANDLE DosDevicesDir;
HANDLE DosDevicesObj;
HANDLE ObjectHandle;
ULONG Context;
ULONG Length;
BOOLEAN RestartScan;
WCHAR LinkTarget[2*MAX_PATH];
POBJECT_DIRECTORY_INFORMATION DirInfo;
WCHAR LocalBuffer[MAX_PATH];
WCHAR LocalBuffer2[MAX_PATH];
PWCHAR pTmp;
if (!NtNameIsBasic) {
//
// Find the base NT device name
//
Status = GetBaseDeviceName(NtName, LocalBuffer, sizeof(LocalBuffer));
if (!NT_SUCCESS(Status)) {
return Status;
}
} else {
wcscpy(LocalBuffer, NtName);
}
//
// Open \ArcName directory.
//
RtlInitUnicodeString(&UnicodeString,L"\\ArcName");
InitializeObjectAttributes(&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenDirectoryObject(&DosDevicesDir,
DIRECTORY_QUERY,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
return Status;
}
//
// Iterate each object in that directory.
//
Context = 0;
RestartScan = TRUE;
Status = NtQueryDirectoryObject(DosDevicesDir,
TmpBuffer3,
sizeof(TmpBuffer3),
TRUE,
RestartScan,
&Context,
&Length
);
RestartScan = FALSE;
DirInfo = (POBJECT_DIRECTORY_INFORMATION)TmpBuffer3;
while (NT_SUCCESS(Status)) {
DirInfo->Name.Buffer[DirInfo->Name.Length/sizeof(WCHAR)] = 0;
DirInfo->TypeName.Buffer[DirInfo->TypeName.Length/sizeof(WCHAR)] = 0;
//
// Skip this entry if it's not a symbolic link.
//
if ((DirInfo->Name.Length != 0) &&
!lstrcmpi(DirInfo->TypeName.Buffer, L"SymbolicLink")) {
//
// Get this \DosDevices object's link target.
//
swprintf(LocalBuffer2, L"\\ArcName\\%ws", DirInfo->Name.Buffer);
Status = GetBaseDeviceName(LocalBuffer2, LinkTarget, sizeof(LinkTarget));
if (NT_SUCCESS(Status)) {
//
// See if the base name of this link matches the base
// name of what we are looking for.
//
if(!_wcsnicmp(LocalBuffer, LinkTarget, wcslen(LinkTarget))) {
//
// Got a match.
//
lstrcpy(ArcName, DirInfo->Name.Buffer);
NtClose(DosDevicesDir);
return STATUS_SUCCESS;
}
}
}
//
// Go on to next object.
//
Status = NtQueryDirectoryObject(
DosDevicesDir,
TmpBuffer3,
sizeof(TmpBuffer3),
TRUE,
RestartScan,
&Context,
&Length
);
}
NtClose(DosDevicesDir);
return Status;
}
NTSTATUS
GetBaseDeviceName(
IN PWSTR SymbolicName,
OUT PWSTR Buffer,
IN ULONG Size
)
/*++
Routine Description:
This routine drills down thru symbolic links until it finds the base device name.
Arguments:
SymbolicName - The name to start with.
Buffer - The output buffer.
Size - Length, in bytes of Buffer
Return Value:
STATUS_SUCCESS if it completes adding all the to do items properly.
--*/
{
UNICODE_STRING UnicodeString;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
NTSTATUS Status;
//
// Start at the first name
//
RtlInitUnicodeString(&UnicodeString, SymbolicName);
InitializeObjectAttributes(
&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenSymbolicLinkObject(&Handle,
(ACCESS_MASK)SYMBOLIC_LINK_QUERY,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
return Status;
}
while (TRUE) {
//
// Take this open and get the next name
//
UnicodeString.Length = 0;
UnicodeString.MaximumLength = (USHORT)Size;
UnicodeString.Buffer = (PWCHAR)Buffer;
Status = NtQuerySymbolicLinkObject(Handle,
&UnicodeString,
NULL
);
NtClose(Handle);
Buffer[(UnicodeString.Length / sizeof(WCHAR))] = UNICODE_NULL;
if (!NT_SUCCESS(Status)) {
return Status;
}
//
// See if the next name is also a symbolic name
//
RtlInitUnicodeString(&UnicodeString, Buffer);
InitializeObjectAttributes(
&ObjectAttributes,
&UnicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
NULL
);
Status = NtOpenSymbolicLinkObject(&Handle,
(ACCESS_MASK)SYMBOLIC_LINK_QUERY,
&ObjectAttributes
);
if (!NT_SUCCESS(Status)) {
return STATUS_SUCCESS;
}
}
}
Reference in a new issue Copy permalink