Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-28 01:55:19 +00:00
Code Issues Projects Releases Packages Wiki Activity
reactos/ntoskrnl/config/cmsysini.c
George Bișoc 578f2fc512
[NTOS:CM] Don't lazy flush the registry during unlocking operation 
Whenever ReactOS finishes its operations onto the registry and unlocks it, a lazy flush is invoked to do an eventual flushing of the registry to the backing storage of the system. Except that... lazy flushing never comes into place.

This is because whenever CmpLazyFlush is called that sets up a timer which needs to expire in order to trigger the lazy flusher engine worker. However, registry locking/unlocking is a frequent occurrence, mainly when on desktop. Therefore as a matter of fact, CmpLazyFlush keeps removing and inserting the timer and the lazy flusher will never kick in that way.

Ironically the lazy flusher actually does the flushing when on USETUP installation phase because during text-mode setup installation in ReactOS the frequency of registry operations is actually less so the timer has the opportunity to expire and fire up the flusher.

In addition to that, we must queue a lazy flush when marking cells as dirty because such dirty data has to be flushed down to the media storage of the system. Of course, the real place where lazy flushing operation is done should be in a subset helper like HvMarkDirty that marks parts of a hive as dirty but since we do not have that, we'll be lazy flushing the registry during cells dirty marking instead for now.

CORE-18303
2022-12-23 19:45:13 +01:00

2274 lines
70 KiB
C
Raw Blame History

/*
* PROJECT: ReactOS Kernel
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: ntoskrnl/config/cmsysini.c
* PURPOSE: Configuration Manager - System Initialization Code
* PROGRAMMERS: ReactOS Portable Systems Group
* Alex Ionescu (alex.ionescu@reactos.org)
*/
/* INCLUDES *******************************************************************/
#include "ntoskrnl.h"
#define NDEBUG
#include "debug.h"
POBJECT_TYPE CmpKeyObjectType;
PCMHIVE CmiVolatileHive;
LIST_ENTRY CmpHiveListHead;
ERESOURCE CmpRegistryLock;
KGUARDED_MUTEX CmpSelfHealQueueLock;
LIST_ENTRY CmpSelfHealQueueListHead;
KEVENT CmpLoadWorkerEvent;
LONG CmpLoadWorkerIncrement;
PEPROCESS CmpSystemProcess;
BOOLEAN HvShutdownComplete;
PVOID CmpRegistryLockCallerCaller, CmpRegistryLockCaller;
BOOLEAN CmpFlushOnLockRelease;
BOOLEAN CmpSpecialBootCondition;
BOOLEAN CmpNoWrite;
BOOLEAN CmpWasSetupBoot;
BOOLEAN CmpProfileLoaded;
BOOLEAN CmpNoVolatileCreates;
ULONG CmpTraceLevel = 0;
extern LONG CmpFlushStarveWriters;
extern BOOLEAN CmFirstTime;
/* FUNCTIONS ******************************************************************/
BOOLEAN
NTAPI
CmpLinkKeyToHive(
_In_z_ PCWSTR LinkKeyName,
_In_z_ PCWSTR TargetKeyName)
{
NTSTATUS Status;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
HANDLE LinkKeyHandle;
ULONG Disposition;
PAGED_CODE();
/* Initialize the object attributes */
RtlInitUnicodeString(&KeyName, LinkKeyName);
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
NULL,
NULL);
/* Create the link key */
Status = ZwCreateKey(&LinkKeyHandle,
KEY_CREATE_LINK,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE | REG_OPTION_CREATE_LINK,
&Disposition);
if (!NT_SUCCESS(Status))
{
DPRINT1("CM: CmpLinkKeyToHive: couldn't create %S, Status = 0x%lx\n",
LinkKeyName, Status);
return FALSE;
}
/* Check if the new key was actually created */
if (Disposition != REG_CREATED_NEW_KEY)
{
DPRINT1("CM: CmpLinkKeyToHive: %S already exists!\n", LinkKeyName);
ZwClose(LinkKeyHandle);
return FALSE;
}
/* Set the target key name as link target */
RtlInitUnicodeString(&KeyName, TargetKeyName);
Status = ZwSetValueKey(LinkKeyHandle,
&CmSymbolicLinkValueName,
0,
REG_LINK,
KeyName.Buffer,
KeyName.Length);
/* Close the link key handle */
ObCloseHandle(LinkKeyHandle, KernelMode);
if (!NT_SUCCESS(Status))
{
DPRINT1("CM: CmpLinkKeyToHive: couldn't create symbolic link for %S, Status = 0x%lx\n",
TargetKeyName, Status);
return FALSE;
}
return TRUE;
}
VOID
NTAPI
CmpDeleteKeyObject(PVOID DeletedObject)
{
PCM_KEY_BODY KeyBody = (PCM_KEY_BODY)DeletedObject;
PCM_KEY_CONTROL_BLOCK Kcb;
REG_KEY_HANDLE_CLOSE_INFORMATION KeyHandleCloseInfo;
REG_POST_OPERATION_INFORMATION PostOperationInfo;
NTSTATUS Status;
PAGED_CODE();
/* First off, prepare the handle close information callback */
PostOperationInfo.Object = KeyBody;
KeyHandleCloseInfo.Object = KeyBody;
Status = CmiCallRegisteredCallbacks(RegNtPreKeyHandleClose,
&KeyHandleCloseInfo);
if (!NT_SUCCESS(Status))
{
/* If we failed, notify the post routine */
PostOperationInfo.Status = Status;
CmiCallRegisteredCallbacks(RegNtPostKeyHandleClose, &PostOperationInfo);
return;
}
/* Acquire hive lock */
CmpLockRegistry();
/* Make sure this is a valid key body */
if (KeyBody->Type == CM_KEY_BODY_TYPE)
{
/* Get the KCB */
Kcb = KeyBody->KeyControlBlock;
if (Kcb)
{
/* Delist the key */
DelistKeyBodyFromKCB(KeyBody, FALSE);
/* Dereference the KCB */
CmpDelayDerefKeyControlBlock(Kcb);
}
}
/* Release the registry lock */
CmpUnlockRegistry();
/* Do the post callback */
PostOperationInfo.Status = STATUS_SUCCESS;
CmiCallRegisteredCallbacks(RegNtPostKeyHandleClose, &PostOperationInfo);
}
VOID
NTAPI
CmpCloseKeyObject(IN PEPROCESS Process OPTIONAL,
IN PVOID Object,
IN ACCESS_MASK GrantedAccess,
IN ULONG ProcessHandleCount,
IN ULONG SystemHandleCount)
{
PCM_KEY_BODY KeyBody = (PCM_KEY_BODY)Object;
PAGED_CODE();
/* Don't do anything if we're not the last handle */
if (SystemHandleCount > 1) return;
/* Make sure we're a valid key body */
if (KeyBody->Type == CM_KEY_BODY_TYPE)
{
/* Don't do anything if we don't have a notify block */
if (!KeyBody->NotifyBlock) return;
/* This shouldn't happen yet */
ASSERT(FALSE);
}
}
NTSTATUS
NTAPI
CmpQueryKeyName(IN PVOID ObjectBody,
IN BOOLEAN HasName,
IN OUT POBJECT_NAME_INFORMATION ObjectNameInfo,
IN ULONG Length,
OUT PULONG ReturnLength,
IN KPROCESSOR_MODE PreviousMode)
{
PUNICODE_STRING KeyName;
ULONG BytesToCopy;
NTSTATUS Status = STATUS_SUCCESS;
PCM_KEY_BODY KeyBody = (PCM_KEY_BODY)ObjectBody;
PCM_KEY_CONTROL_BLOCK Kcb = KeyBody->KeyControlBlock;
/* Acquire hive lock */
CmpLockRegistry();
/* Lock KCB shared */
CmpAcquireKcbLockShared(Kcb);
/* Check if it's a deleted block */
if (Kcb->Delete)
{
/* Release the locks */
CmpReleaseKcbLock(Kcb);
CmpUnlockRegistry();
/* Let the caller know it's deleted */
return STATUS_KEY_DELETED;
}
/* Get the name */
KeyName = CmpConstructName(Kcb);
/* Release the locks */
CmpReleaseKcbLock(Kcb);
CmpUnlockRegistry();
/* Check if we got the name */
if (!KeyName) return STATUS_INSUFFICIENT_RESOURCES;
/* Set the returned length */
*ReturnLength = KeyName->Length + sizeof(OBJECT_NAME_INFORMATION) + sizeof(WCHAR);
/* Calculate amount of bytes to copy into the buffer */
BytesToCopy = KeyName->Length + sizeof(WCHAR);
/* Check if the provided buffer is too small to fit even anything */
if ((Length <= sizeof(OBJECT_NAME_INFORMATION)) ||
((Length < (*ReturnLength)) && (BytesToCopy < sizeof(WCHAR))))
{
/* Free the buffer allocated by CmpConstructName */
ExFreePoolWithTag(KeyName, TAG_CM);
/* Return buffer length failure without writing anything there because nothing fits */
return STATUS_INFO_LENGTH_MISMATCH;
}
/* Check if the provided buffer can be partially written */
if (Length < (*ReturnLength))
{
/* Yes, indicate so in the return status */
Status = STATUS_INFO_LENGTH_MISMATCH;
/* Calculate amount of bytes which the provided buffer could handle */
BytesToCopy = Length - sizeof(OBJECT_NAME_INFORMATION);
}
/* Remove the null termination character from the size */
BytesToCopy -= sizeof(WCHAR);
/* Fill in the result */
_SEH2_TRY
{
/* Return data to user */
ObjectNameInfo->Name.Buffer = (PWCHAR)(ObjectNameInfo + 1);
ObjectNameInfo->Name.MaximumLength = KeyName->Length;
ObjectNameInfo->Name.Length = KeyName->Length;
/* Copy string content*/
RtlCopyMemory(ObjectNameInfo->Name.Buffer,
KeyName->Buffer,
BytesToCopy);
/* Null terminate it */
ObjectNameInfo->Name.Buffer[BytesToCopy / sizeof(WCHAR)] = UNICODE_NULL;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* Get the status */
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
/* Free the buffer allocated by CmpConstructName */
ExFreePoolWithTag(KeyName, TAG_CM);
/* Return status */
return Status;
}
NTSTATUS
NTAPI
CmpInitHiveFromFile(IN PCUNICODE_STRING HiveName,
IN ULONG HiveFlags,
OUT PCMHIVE *Hive,
IN OUT PBOOLEAN New,
IN ULONG CheckFlags)
{
ULONG HiveDisposition, LogDisposition;
HANDLE FileHandle = NULL, LogHandle = NULL;
NTSTATUS Status;
ULONG Operation, FileType;
PCMHIVE NewHive;
PAGED_CODE();
/* Assume failure */
*Hive = NULL;
/* Open or create the hive files */
Status = CmpOpenHiveFiles(HiveName,
L".LOG",
&FileHandle,
&LogHandle,
&HiveDisposition,
&LogDisposition,
*New,
FALSE,
TRUE,
NULL);
if (!NT_SUCCESS(Status)) return Status;
/* Check if we have a log handle */
FileType = (LogHandle) ? HFILE_TYPE_LOG : HFILE_TYPE_PRIMARY;
/* Check if we created or opened the hive */
if (HiveDisposition == FILE_CREATED)
{
/* Do a create operation */
Operation = HINIT_CREATE;
*New = TRUE;
}
else
{
/* Open it as a file */
Operation = HINIT_FILE;
*New = FALSE;
}
/* Check if we're sharing hives */
if (CmpShareSystemHives)
{
/* Then force using the primary hive */
FileType = HFILE_TYPE_PRIMARY;
if (LogHandle)
{
/* Get rid of the log handle */
ZwClose(LogHandle);
LogHandle = NULL;
}
}
/* Check if we're too late */
if (HvShutdownComplete)
{
/* Fail */
ZwClose(FileHandle);
if (LogHandle) ZwClose(LogHandle);
return STATUS_TOO_LATE;
}
/* Initialize the hive */
Status = CmpInitializeHive(&NewHive,
Operation,
HiveFlags,
FileType,
NULL,
FileHandle,
LogHandle,
NULL,
HiveName,
CheckFlags);
if (!NT_SUCCESS(Status))
{
/* Fail */
ZwClose(FileHandle);
if (LogHandle) ZwClose(LogHandle);
return Status;
}
/* Success, return hive */
*Hive = NewHive;
/* Duplicate the hive name */
NewHive->FileFullPath.Buffer = ExAllocatePoolWithTag(PagedPool,
HiveName->Length,
TAG_CM);
if (NewHive->FileFullPath.Buffer)
{
/* Copy the string */
RtlCopyMemory(NewHive->FileFullPath.Buffer,
HiveName->Buffer,
HiveName->Length);
NewHive->FileFullPath.Length = HiveName->Length;
NewHive->FileFullPath.MaximumLength = HiveName->Length;
}
/* Return success */
return STATUS_SUCCESS;
}
CODE_SEG("INIT")
NTSTATUS
NTAPI
CmpSetSystemValues(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
NTSTATUS Status;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE KeyHandle;
UNICODE_STRING KeyName, ValueName = { 0, 0, NULL };
ASSERT(LoaderBlock != NULL);
/* Setup attributes for loader options */
RtlInitUnicodeString(&KeyName,
L"\\REGISTRY\\MACHINE\\SYSTEM\\CurrentControlSet\\"
L"Control");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenKey(&KeyHandle, KEY_WRITE, &ObjectAttributes);
if (!NT_SUCCESS(Status))
return Status;
/* Setup the value for the system start options */
RtlInitUnicodeString(&KeyName, L"SystemStartOptions");
Status = NtSetValueKey(KeyHandle,
&KeyName,
0,
REG_SZ,
CmpLoadOptions.Buffer,
CmpLoadOptions.Length);
if (!NT_SUCCESS(Status))
goto Quit;
/* Setup the value for the system boot device in ARC format */
RtlInitUnicodeString(&KeyName, L"SystemBootDevice");
RtlCreateUnicodeStringFromAsciiz(&ValueName, LoaderBlock->ArcBootDeviceName);
Status = NtSetValueKey(KeyHandle,
&KeyName,
0,
REG_SZ,
ValueName.Buffer,
ValueName.Length);
/* Free the temporary string */
RtlFreeUnicodeString(&ValueName);
Quit:
/* Close the key and return */
NtClose(KeyHandle);
return Status;
}
static
CODE_SEG("INIT")
NTSTATUS
CmpCreateHardwareProfile(HANDLE ControlSetHandle)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
HANDLE ProfilesHandle = NULL;
HANDLE ProfileHandle = NULL;
ULONG Disposition;
NTSTATUS Status;
DPRINT("CmpCreateHardwareProfile()\n");
/* Create the Hardware Profiles key */
RtlInitUnicodeString(&KeyName, L"Hardware Profiles");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
ControlSetHandle,
NULL);
Status = NtCreateKey(&ProfilesHandle,
KEY_ALL_ACCESS,
&ObjectAttributes,
0,
NULL,
0,
&Disposition);
if (!NT_SUCCESS(Status))
{
DPRINT1("Creating the Hardware Profile key failed\n");
goto done;
}
/* Sanity check */
ASSERT(Disposition == REG_CREATED_NEW_KEY);
/* Create the 0000 key */
RtlInitUnicodeString(&KeyName, L"0000");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
ProfilesHandle,
NULL);
Status = NtCreateKey(&ProfileHandle,
KEY_ALL_ACCESS,
&ObjectAttributes,
0,
NULL,
0,
&Disposition);
if (!NT_SUCCESS(Status))
{
DPRINT1("Creating the Hardware Profile\\0000 key failed\n");
goto done;
}
/* Sanity check */
ASSERT(Disposition == REG_CREATED_NEW_KEY);
done:
if (ProfilesHandle)
NtClose(ProfilesHandle);
if (ProfileHandle)
NtClose(ProfileHandle);
DPRINT("CmpCreateHardwareProfile() done\n");
return Status;
}
CODE_SEG("INIT")
NTSTATUS
NTAPI
CmpCreateControlSet(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
UNICODE_STRING ConfigName = RTL_CONSTANT_STRING(L"Control\\IDConfigDB");
UNICODE_STRING SelectName =
RTL_CONSTANT_STRING(L"\\Registry\\Machine\\System\\Select");
UNICODE_STRING KeyName;
OBJECT_ATTRIBUTES ObjectAttributes;
CHAR ValueInfoBuffer[128];
PKEY_VALUE_FULL_INFORMATION ValueInfo;
WCHAR UnicodeBuffer[128];
HANDLE SelectHandle = NULL;
HANDLE KeyHandle = NULL;
HANDLE ConfigHandle = NULL;
HANDLE ProfileHandle = NULL;
HANDLE ParentHandle = NULL;
ULONG ControlSet, HwProfile;
NTSTATUS Status;
ULONG ResultLength, Disposition;
PLOADER_PARAMETER_EXTENSION LoaderExtension;
PAGED_CODE();
/* ReactOS Hack: Hard-code current to 001 for SetupLdr */
if (LoaderBlock->RegistryBase == NULL)
{
/* Build the ControlSet001 key */
RtlInitUnicodeString(&KeyName,
L"\\Registry\\Machine\\System\\ControlSet001");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtCreateKey(&KeyHandle,
KEY_ALL_ACCESS,
&ObjectAttributes,
0,
NULL,
0,
&Disposition);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create ControlSet001 key: 0x%lx\n", Status);
goto Cleanup;
}
/* Create the Hardware Profile keys */
Status = CmpCreateHardwareProfile(KeyHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create Hardware profile keys: 0x%lx\n", Status);
goto Cleanup;
}
/* Use hard-coded setting */
ControlSet = 1;
}
else
{
/* Open the select key */
InitializeObjectAttributes(&ObjectAttributes,
&SelectName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenKey(&SelectHandle, KEY_READ, &ObjectAttributes);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to open select key: 0x%lx\n", Status);
goto Cleanup;
}
/* Open the current value */
RtlInitUnicodeString(&KeyName, L"Current");
Status = NtQueryValueKey(SelectHandle,
&KeyName,
KeyValueFullInformation,
ValueInfoBuffer,
sizeof(ValueInfoBuffer),
&ResultLength);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to open the Current value: 0x%lx\n", Status);
goto Cleanup;
}
/* Get the actual value pointer, and get the control set ID */
ValueInfo = (PKEY_VALUE_FULL_INFORMATION)ValueInfoBuffer;
ControlSet = *(PULONG)((PUCHAR)ValueInfo + ValueInfo->DataOffset);
}
/* Create the current control set key */
RtlInitUnicodeString(&KeyName,
L"\\Registry\\Machine\\System\\CurrentControlSet");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtCreateKey(&KeyHandle,
KEY_CREATE_LINK,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE | REG_OPTION_CREATE_LINK,
&Disposition);
if (!NT_SUCCESS(Status))
goto Cleanup;
/* Sanity check */
ASSERT(Disposition == REG_CREATED_NEW_KEY);
/* Initialize the target link name */
Status = RtlStringCbPrintfW(UnicodeBuffer, sizeof(UnicodeBuffer),
L"\\Registry\\Machine\\System\\ControlSet%03ld",
ControlSet);
if (!NT_SUCCESS(Status))
goto Cleanup;
RtlInitUnicodeString(&KeyName, UnicodeBuffer);
/* Set the value */
Status = NtSetValueKey(KeyHandle,
&CmSymbolicLinkValueName,
0,
REG_LINK,
KeyName.Buffer,
KeyName.Length);
if (!NT_SUCCESS(Status))
goto Cleanup;
/* Get the configuration database key */
InitializeObjectAttributes(&ObjectAttributes,
&ConfigName,
OBJ_CASE_INSENSITIVE,
KeyHandle,
NULL);
Status = NtOpenKey(&ConfigHandle, KEY_READ, &ObjectAttributes);
/* Check if we don't have one */
if (!NT_SUCCESS(Status))
{
/* Cleanup and exit */
Status = STATUS_SUCCESS;
goto Cleanup;
}
/* ReactOS Hack: Hard-code current to 001 for SetupLdr */
if (LoaderBlock->RegistryBase == NULL)
{
HwProfile = 0;
}
else
{
/* Now get the current config */
RtlInitUnicodeString(&KeyName, L"CurrentConfig");
Status = NtQueryValueKey(ConfigHandle,
&KeyName,
KeyValueFullInformation,
ValueInfoBuffer,
sizeof(ValueInfoBuffer),
&ResultLength);
/* Set pointer to buffer */
ValueInfo = (PKEY_VALUE_FULL_INFORMATION)ValueInfoBuffer;
/* Check if we failed or got a non DWORD-value */
if (!(NT_SUCCESS(Status)) || (ValueInfo->Type != REG_DWORD))
{
Status = STATUS_SUCCESS;
goto Cleanup;
}
/* Get the hadware profile */
HwProfile = *(PULONG)((PUCHAR)ValueInfo + ValueInfo->DataOffset);
}
/* Open the hardware profile key */
RtlInitUnicodeString(&KeyName,
L"\\Registry\\Machine\\System\\CurrentControlSet"
L"\\Hardware Profiles");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenKey(&ParentHandle, KEY_READ, &ObjectAttributes);
if (!NT_SUCCESS(Status))
{
/* Exit and clean up */
Status = STATUS_SUCCESS;
goto Cleanup;
}
/* Build the profile name */
RtlStringCbPrintfW(UnicodeBuffer, sizeof(UnicodeBuffer),
L"%04ld", HwProfile);
RtlInitUnicodeString(&KeyName, UnicodeBuffer);
/* Open the associated key */
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
ParentHandle,
NULL);
Status = NtOpenKey(&ProfileHandle,
KEY_READ | KEY_WRITE,
&ObjectAttributes);
if (!NT_SUCCESS (Status))
{
/* Cleanup and exit */
Status = STATUS_SUCCESS;
goto Cleanup;
}
/* Check if we have a loader block extension */
LoaderExtension = LoaderBlock->Extension;
if (LoaderExtension)
{
DPRINT("ReactOS doesn't support NTLDR Profiles yet!\n");
}
/* Create the current hardware profile key */
RtlInitUnicodeString(&KeyName,
L"\\Registry\\Machine\\System\\CurrentControlSet\\"
L"Hardware Profiles\\Current");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtCreateKey(&KeyHandle,
KEY_CREATE_LINK,
&ObjectAttributes,
0,
NULL,
REG_OPTION_VOLATILE | REG_OPTION_CREATE_LINK,
&Disposition);
if (NT_SUCCESS(Status))
{
/* Sanity check */
ASSERT(Disposition == REG_CREATED_NEW_KEY);
/* Create the profile name */
RtlStringCbPrintfW(UnicodeBuffer, sizeof(UnicodeBuffer),
L"\\Registry\\Machine\\System\\CurrentControlSet\\"
L"Hardware Profiles\\%04ld",
HwProfile);
RtlInitUnicodeString(&KeyName, UnicodeBuffer);
/* Set it */
Status = NtSetValueKey(KeyHandle,
&CmSymbolicLinkValueName,
0,
REG_LINK,
KeyName.Buffer,
KeyName.Length);
}
Status = STATUS_SUCCESS;
Cleanup:
/* Close every opened handle */
if (SelectHandle) NtClose(SelectHandle);
if (KeyHandle) NtClose(KeyHandle);
if (ConfigHandle) NtClose(ConfigHandle);
if (ProfileHandle) NtClose(ProfileHandle);
if (ParentHandle) NtClose(ParentHandle);
DPRINT("CmpCreateControlSet() done\n");
return Status;
}
NTSTATUS
NTAPI
CmpLinkHiveToMaster(IN PUNICODE_STRING LinkName,
IN HANDLE RootDirectory,
IN PCMHIVE RegistryHive,
IN BOOLEAN Allocate,
IN PSECURITY_DESCRIPTOR SecurityDescriptor)
{
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
CM_PARSE_CONTEXT ParseContext = {0};
HANDLE KeyHandle;
PCM_KEY_BODY KeyBody;
PAGED_CODE();
/* Setup the object attributes */
InitializeObjectAttributes(&ObjectAttributes,
LinkName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
RootDirectory,
SecurityDescriptor);
/* Setup the parse context */
ParseContext.CreateLink = TRUE;
ParseContext.CreateOperation = TRUE;
ParseContext.ChildHive.KeyHive = &RegistryHive->Hive;
/* Check if we have a root keycell or if we need to create it */
if (Allocate)
{
/* Create it */
ParseContext.ChildHive.KeyCell = HCELL_NIL;
}
else
{
/* We have one */
ParseContext.ChildHive.KeyCell = RegistryHive->Hive.BaseBlock->RootCell;
}
/* Create the link node */
Status = ObOpenObjectByName(&ObjectAttributes,
CmpKeyObjectType,
KernelMode,
NULL,
KEY_READ | KEY_WRITE,
(PVOID)&ParseContext,
&KeyHandle);
if (!NT_SUCCESS(Status)) return Status;
/* Mark the hive as clean */
RegistryHive->Hive.DirtyFlag = FALSE;
/* ReactOS Hack: Keep alive */
Status = ObReferenceObjectByHandle(KeyHandle,
0,
CmpKeyObjectType,
KernelMode,
(PVOID*)&KeyBody,
NULL);
ASSERT(NT_SUCCESS(Status));
/* Close the extra handle */
ZwClose(KeyHandle);
return STATUS_SUCCESS;
}
CODE_SEG("INIT")
BOOLEAN
NTAPI
CmpInitializeSystemHive(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
{
static const UNICODE_STRING HiveName = RTL_CONSTANT_STRING(L"SYSTEM");
PVOID HiveBase;
ANSI_STRING LoadString;
PVOID Buffer;
ULONG Length;
NTSTATUS Status;
UNICODE_STRING KeyName;
PCMHIVE SystemHive = NULL;
PSECURITY_DESCRIPTOR SecurityDescriptor;
BOOLEAN Success;
PAGED_CODE();
/* Setup the ansi string */
RtlInitAnsiString(&LoadString, LoaderBlock->LoadOptions);
/* Allocate the unicode buffer */
Length = LoadString.Length * sizeof(WCHAR) + sizeof(UNICODE_NULL);
Buffer = ExAllocatePoolWithTag(PagedPool, Length, TAG_CM);
if (!Buffer)
{
/* Fail */
KeBugCheckEx(BAD_SYSTEM_CONFIG_INFO, 3, 1, (ULONG_PTR)LoaderBlock, 0);
}
/* Setup the unicode string */
RtlInitEmptyUnicodeString(&CmpLoadOptions, Buffer, (USHORT)Length);
/* Add the load options and null-terminate */
Status = RtlAnsiStringToUnicodeString(&CmpLoadOptions, &LoadString, FALSE);
if (!NT_SUCCESS(Status))
{
return FALSE;
}
CmpLoadOptions.Buffer[LoadString.Length] = UNICODE_NULL;
CmpLoadOptions.Length += sizeof(WCHAR);
/* Get the System Hive base address */
HiveBase = LoaderBlock->RegistryBase;
Status = CmpInitializeHive(&SystemHive,
HiveBase ? HINIT_MEMORY : HINIT_CREATE,
HIVE_NOLAZYFLUSH,
HFILE_TYPE_LOG,
HiveBase,
NULL,
NULL,
NULL,
&HiveName,
HiveBase ? 2 : 0);
if (!NT_SUCCESS(Status))
{
return FALSE;
}
/* Set the hive filename */
Success = RtlCreateUnicodeString(&SystemHive->FileFullPath,
L"\\SystemRoot\\System32\\Config\\SYSTEM");
if (!Success)
{
return FALSE;
}
/* Manually set the hive as volatile, if in Live CD mode */
if (HiveBase && CmpShareSystemHives)
{
SystemHive->Hive.HiveFlags = HIVE_VOLATILE;
}
/* Save the boot type */
CmpBootType = SystemHive->Hive.BaseBlock->BootType;
/* Are we in self-healing mode? */
if (!CmSelfHeal)
{
/* Disable self-healing internally and check if boot type wanted it */
CmpSelfHeal = FALSE;
if (CmpBootType & 4)
{
/* We're disabled, so bugcheck */
KeBugCheckEx(BAD_SYSTEM_CONFIG_INFO,
3,
3,
(ULONG_PTR)SystemHive,
0);
}
}
/* Create the default security descriptor */
SecurityDescriptor = CmpHiveRootSecurityDescriptor();
/* Attach it to the system key */
/* Let CmpLinkHiveToMaster allocate a new hive if we got none from the LoaderBlock. */
RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\SYSTEM");
Status = CmpLinkHiveToMaster(&KeyName,
NULL,
SystemHive,
!HiveBase,
SecurityDescriptor);
/* Free the security descriptor */
ExFreePoolWithTag(SecurityDescriptor, TAG_CMSD);
if (!NT_SUCCESS(Status)) return FALSE;
/* Add the hive to the hive list */
CmpMachineHiveList[3].CmHive = SystemHive;
/* Success! */
return TRUE;
}
CODE_SEG("INIT")
NTSTATUS
NTAPI
CmpCreateObjectTypes(VOID)
{
OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
UNICODE_STRING Name;
GENERIC_MAPPING CmpKeyMapping = {KEY_READ,
KEY_WRITE,
KEY_EXECUTE,
KEY_ALL_ACCESS};
PAGED_CODE();
/* Initialize the Key object type */
RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
RtlInitUnicodeString(&Name, L"Key");
ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
ObjectTypeInitializer.DefaultPagedPoolCharge = sizeof(CM_KEY_BODY);
ObjectTypeInitializer.GenericMapping = CmpKeyMapping;
ObjectTypeInitializer.PoolType = PagedPool;
ObjectTypeInitializer.ValidAccessMask = KEY_ALL_ACCESS;
ObjectTypeInitializer.UseDefaultObject = TRUE;
ObjectTypeInitializer.DeleteProcedure = CmpDeleteKeyObject;
ObjectTypeInitializer.ParseProcedure = CmpParseKey;
ObjectTypeInitializer.SecurityProcedure = CmpSecurityMethod;
ObjectTypeInitializer.QueryNameProcedure = CmpQueryKeyName;
ObjectTypeInitializer.CloseProcedure = CmpCloseKeyObject;
ObjectTypeInitializer.SecurityRequired = TRUE;
ObjectTypeInitializer.InvalidAttributes = OBJ_EXCLUSIVE | OBJ_PERMANENT;
/* Create it */
return ObCreateObjectType(&Name, &ObjectTypeInitializer, NULL, &CmpKeyObjectType);
}
CODE_SEG("INIT")
BOOLEAN
NTAPI
CmpCreateRootNode(IN PHHIVE Hive,
IN PCWSTR Name,
OUT PHCELL_INDEX Index)
{
UNICODE_STRING KeyName;
PCM_KEY_NODE KeyCell;
PAGED_CODE();
/* Initialize the node name and allocate it */
RtlInitUnicodeString(&KeyName, Name);
*Index = HvAllocateCell(Hive,
FIELD_OFFSET(CM_KEY_NODE, Name) +
CmpNameSize(Hive, &KeyName),
Stable,
HCELL_NIL);
if (*Index == HCELL_NIL) return FALSE;
/* Set the cell index and get the data */
Hive->BaseBlock->RootCell = *Index;
KeyCell = (PCM_KEY_NODE)HvGetCell(Hive, *Index);
if (!KeyCell) return FALSE;
/* Setup the cell */
KeyCell->Signature = CM_KEY_NODE_SIGNATURE;
KeyCell->Flags = KEY_HIVE_ENTRY | KEY_NO_DELETE;
KeQuerySystemTime(&KeyCell->LastWriteTime);
KeyCell->Parent = HCELL_NIL;
KeyCell->SubKeyCounts[Stable] = 0;
KeyCell->SubKeyCounts[Volatile] = 0;
KeyCell->SubKeyLists[Stable] = HCELL_NIL;
KeyCell->SubKeyLists[Volatile] = HCELL_NIL;
KeyCell->ValueList.Count = 0;
KeyCell->ValueList.List = HCELL_NIL;
KeyCell->Security = HCELL_NIL;
KeyCell->Class = HCELL_NIL;
KeyCell->ClassLength = 0;
KeyCell->MaxNameLen = 0;
KeyCell->MaxClassLen = 0;
KeyCell->MaxValueNameLen = 0;
KeyCell->MaxValueDataLen = 0;
/* Copy the name (this will also set the length) */
KeyCell->NameLength = CmpCopyName(Hive, KeyCell->Name, &KeyName);
/* Check if the name was compressed and set the flag if so */
if (KeyCell->NameLength < KeyName.Length)
KeyCell->Flags |= KEY_COMP_NAME;
/* Return success */
HvReleaseCell(Hive, *Index);
return TRUE;
}
CODE_SEG("INIT")
BOOLEAN
NTAPI
CmpCreateRegistryRoot(VOID)
{
UNICODE_STRING KeyName;
OBJECT_ATTRIBUTES ObjectAttributes;
PCM_KEY_BODY RootKey;
HCELL_INDEX RootIndex;
NTSTATUS Status;
PCM_KEY_NODE KeyCell;
PSECURITY_DESCRIPTOR SecurityDescriptor;
PCM_KEY_CONTROL_BLOCK Kcb;
PAGED_CODE();
/* Setup the root node */
if (!CmpCreateRootNode(&CmiVolatileHive->Hive, L"REGISTRY", &RootIndex))
{
/* We failed */
return FALSE;
}
/* Create '\Registry' key. */
RtlInitUnicodeString(&KeyName, L"\\REGISTRY");
SecurityDescriptor = CmpHiveRootSecurityDescriptor();
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
SecurityDescriptor);
Status = ObCreateObject(KernelMode,
CmpKeyObjectType,
&ObjectAttributes,
KernelMode,
NULL,
sizeof(CM_KEY_BODY),
0,
0,
(PVOID*)&RootKey);
ExFreePoolWithTag(SecurityDescriptor, TAG_CMSD);
if (!NT_SUCCESS(Status)) return FALSE;
/* Sanity check, and get the key cell */
ASSERT((&CmiVolatileHive->Hive)->ReleaseCellRoutine == NULL);
KeyCell = (PCM_KEY_NODE)HvGetCell(&CmiVolatileHive->Hive, RootIndex);
if (!KeyCell) return FALSE;
/* Create the KCB */
RtlInitUnicodeString(&KeyName, L"\\REGISTRY");
Kcb = CmpCreateKeyControlBlock(&CmiVolatileHive->Hive,
RootIndex,
KeyCell,
NULL,
0,
&KeyName);
if (!Kcb)
{
ObDereferenceObject(RootKey);
return FALSE;
}
/* Initialize the object */
RootKey->KeyControlBlock = Kcb;
RootKey->Type = CM_KEY_BODY_TYPE;
RootKey->NotifyBlock = NULL;
RootKey->ProcessID = PsGetCurrentProcessId();
/* Link with KCB */
EnlistKeyBodyWithKCB(RootKey, 0);
/* Insert the key into the namespace */
Status = ObInsertObject(RootKey,
NULL,
KEY_ALL_ACCESS,
0,
NULL,
&CmpRegistryRootHandle);
if (!NT_SUCCESS(Status))
{
ObDereferenceObject(RootKey);
return FALSE;
}
/* Reference the key again so that we never lose it */
Status = ObReferenceObjectByHandle(CmpRegistryRootHandle,
KEY_READ,
NULL,
KernelMode,
(PVOID*)&RootKey,
NULL);
if (!NT_SUCCESS(Status))
{
ObDereferenceObject(RootKey);
return FALSE;
}
/* Completely sucessful */
return TRUE;
}
static PCWSTR
CmpGetRegistryPath(VOID)
{
PCWSTR ConfigPath;
/* Check if we are booted in setup */
if (!ExpInTextModeSetup)
{
ConfigPath = L"\\SystemRoot\\System32\\Config\\";
}
else
{
ConfigPath = L"\\SystemRoot\\";
}
DPRINT1("CmpGetRegistryPath: ConfigPath = '%S'\n", ConfigPath);
return ConfigPath;
}
_Function_class_(KSTART_ROUTINE)
VOID
NTAPI
CmpLoadHiveThread(IN PVOID StartContext)
{
WCHAR FileBuffer[64], RegBuffer[64];
PCWSTR ConfigPath;
UNICODE_STRING TempName, FileName, RegName;
ULONG i, ErrorResponse, WorkerCount, Length;
USHORT FileStart;
ULONG PrimaryDisposition, SecondaryDisposition, ClusterSize;
PCMHIVE CmHive;
HANDLE PrimaryHandle = NULL, LogHandle = NULL;
NTSTATUS Status = STATUS_SUCCESS;
PVOID ErrorParameters;
PAGED_CODE();
/* Get the hive index, make sure it makes sense */
i = PtrToUlong(StartContext);
ASSERT(CmpMachineHiveList[i].Name != NULL);
/* We were started */
CmpMachineHiveList[i].ThreadStarted = TRUE;
/* Build the file name and registry name strings */
RtlInitEmptyUnicodeString(&FileName, FileBuffer, sizeof(FileBuffer));
RtlInitEmptyUnicodeString(&RegName, RegBuffer, sizeof(RegBuffer));
/* Now build the system root path */
ConfigPath = CmpGetRegistryPath();
RtlInitUnicodeString(&TempName, ConfigPath);
RtlAppendUnicodeStringToString(&FileName, &TempName);
FileStart = FileName.Length;
/* And build the registry root path */
RtlInitUnicodeString(&TempName, L"\\REGISTRY\\");
RtlAppendUnicodeStringToString(&RegName, &TempName);
/* Build the base name */
RtlInitUnicodeString(&TempName, CmpMachineHiveList[i].BaseName);
RtlAppendUnicodeStringToString(&RegName, &TempName);
/* Check if this is a child of the root */
if (RegName.Buffer[RegName.Length / sizeof(WCHAR) - 1] == OBJ_NAME_PATH_SEPARATOR)
{
/* Then setup the whole name */
RtlInitUnicodeString(&TempName, CmpMachineHiveList[i].Name);
RtlAppendUnicodeStringToString(&RegName, &TempName);
}
/* Now add the rest of the file name */
RtlInitUnicodeString(&TempName, CmpMachineHiveList[i].Name);
FileName.Length = FileStart;
RtlAppendUnicodeStringToString(&FileName, &TempName);
if (!CmpMachineHiveList[i].CmHive)
{
/* We need to allocate a new hive structure */
CmpMachineHiveList[i].Allocate = TRUE;
/* Load the hive file */
Status = CmpInitHiveFromFile(&FileName,
CmpMachineHiveList[i].HHiveFlags,
&CmHive,
&CmpMachineHiveList[i].Allocate,
0);
if (!(NT_SUCCESS(Status)) ||
(!(CmpShareSystemHives) && !(CmHive->FileHandles[HFILE_TYPE_LOG])))
{
/*
* We failed, or could not get a log file (unless
* the hive is shared), raise a hard error.
*/
ErrorParameters = &FileName;
NtRaiseHardError(STATUS_CANNOT_LOAD_REGISTRY_FILE,
1,
1,
(PULONG_PTR)&ErrorParameters,
OptionOk,
&ErrorResponse);
}
/* Set the hive flags and newly allocated hive pointer */
CmHive->Flags = CmpMachineHiveList[i].CmHiveFlags;
CmpMachineHiveList[i].CmHive2 = CmHive;
}
else
{
/* We already have a hive, is it volatile? */
CmHive = CmpMachineHiveList[i].CmHive;
if (!(CmHive->Hive.HiveFlags & HIVE_VOLATILE))
{
/* It's now, open the hive file and log */
Status = CmpOpenHiveFiles(&FileName,
L".LOG",
&PrimaryHandle,
&LogHandle,
&PrimaryDisposition,
&SecondaryDisposition,
TRUE,
TRUE,
FALSE,
&ClusterSize);
if (!(NT_SUCCESS(Status)) || !(LogHandle))
{
/* Couldn't open the hive or its log file, raise a hard error */
ErrorParameters = &FileName;
NtRaiseHardError(STATUS_CANNOT_LOAD_REGISTRY_FILE,
1,
1,
(PULONG_PTR)&ErrorParameters,
OptionOk,
&ErrorResponse);
/* And bugcheck for posterity's sake */
KeBugCheckEx(BAD_SYSTEM_CONFIG_INFO, 9, 0, i, Status);
}
/* Save the file handles. This should remove our sync hacks */
CmHive->FileHandles[HFILE_TYPE_LOG] = LogHandle;
CmHive->FileHandles[HFILE_TYPE_PRIMARY] = PrimaryHandle;
/* Allow lazy flushing since the handles are there -- remove sync hacks */
//ASSERT(CmHive->Hive.HiveFlags & HIVE_NOLAZYFLUSH);
CmHive->Hive.HiveFlags &= ~HIVE_NOLAZYFLUSH;
/* Get the real size of the hive */
Length = CmHive->Hive.Storage[Stable].Length + HBLOCK_SIZE;
/* Check if the cluster size doesn't match */
if (CmHive->Hive.Cluster != ClusterSize)
{
DPRINT1("FIXME: Support for CmHive->Hive.Cluster (%lu) != ClusterSize (%lu) is unimplemented!\n",
CmHive->Hive.Cluster, ClusterSize);
}
/* Set the file size */
DPRINT("FIXME: Should set file size: %lu\n", Length);
//if (!CmpFileSetSize((PHHIVE)CmHive, HFILE_TYPE_PRIMARY, Length, Length))
//{
/* This shouldn't fail */
//ASSERT(FALSE);
//}
/* Another thing we don't support is NTLDR-recovery */
if (CmHive->Hive.BaseBlock->BootRecover) ASSERT(FALSE);
/* Finally, set our allocated hive to the same hive we've had */
CmpMachineHiveList[i].CmHive2 = CmHive;
ASSERT(CmpMachineHiveList[i].CmHive == CmpMachineHiveList[i].CmHive2);
}
}
/* We're done */
CmpMachineHiveList[i].ThreadFinished = TRUE;
/* Check if we're the last worker */
WorkerCount = InterlockedIncrement(&CmpLoadWorkerIncrement);
if (WorkerCount == CM_NUMBER_OF_MACHINE_HIVES)
{
/* Signal the event */
KeSetEvent(&CmpLoadWorkerEvent, 0, FALSE);
}
/* Kill the thread */
PsTerminateSystemThread(Status);
}
VOID
NTAPI
CmpInitializeHiveList(VOID)
{
WCHAR FileBuffer[64], RegBuffer[64];
PCWSTR ConfigPath;
UNICODE_STRING TempName, FileName, RegName;
HANDLE Thread;
NTSTATUS Status;
ULONG i;
USHORT RegStart;
PSECURITY_DESCRIPTOR SecurityDescriptor;
PAGED_CODE();
/* Allow writing for now */
CmpNoWrite = FALSE;
/* Build the file name and registry name strings */
RtlInitEmptyUnicodeString(&FileName, FileBuffer, sizeof(FileBuffer));
RtlInitEmptyUnicodeString(&RegName, RegBuffer, sizeof(RegBuffer));
/* Now build the system root path */
ConfigPath = CmpGetRegistryPath();
RtlInitUnicodeString(&TempName, ConfigPath);
RtlAppendUnicodeStringToString(&FileName, &TempName);
/* And build the registry root path */
RtlInitUnicodeString(&TempName, L"\\REGISTRY\\");
RtlAppendUnicodeStringToString(&RegName, &TempName);
RegStart = RegName.Length;
/* Setup the event to synchronize workers */
KeInitializeEvent(&CmpLoadWorkerEvent, SynchronizationEvent, FALSE);
/* Enter special boot condition */
CmpSpecialBootCondition = TRUE;
/* Create the SD for the root hives */
SecurityDescriptor = CmpHiveRootSecurityDescriptor();
/* Loop every hive we care about */
for (i = 0; i < CM_NUMBER_OF_MACHINE_HIVES; i++)
{
/* Make sure the list is set up */
ASSERT(CmpMachineHiveList[i].Name != NULL);
/* Load the hive as volatile, if in LiveCD mode */
if (CmpShareSystemHives)
CmpMachineHiveList[i].HHiveFlags |= HIVE_VOLATILE;
/* Create a thread to handle this hive */
Status = PsCreateSystemThread(&Thread,
THREAD_ALL_ACCESS,
NULL,
0,
NULL,
CmpLoadHiveThread,
UlongToPtr(i));
if (NT_SUCCESS(Status))
{
/* We don't care about the handle -- the thread self-terminates */
ZwClose(Thread);
}
else
{
/* Can't imagine this happening */
KeBugCheckEx(BAD_SYSTEM_CONFIG_INFO, 9, 3, i, Status);
}
}
/* Make sure we've reached the end of the list */
ASSERT(CmpMachineHiveList[i].Name == NULL);
/* Wait for hive loading to finish */
KeWaitForSingleObject(&CmpLoadWorkerEvent,
Executive,
KernelMode,
FALSE,
NULL);
/* Exit the special boot condition and make sure all workers completed */
CmpSpecialBootCondition = FALSE;
ASSERT(CmpLoadWorkerIncrement == CM_NUMBER_OF_MACHINE_HIVES);
/* Loop hives again */
for (i = 0; i < CM_NUMBER_OF_MACHINE_HIVES; i++)
{
/* Make sure the thread ran and finished */
ASSERT(CmpMachineHiveList[i].ThreadFinished == TRUE);
ASSERT(CmpMachineHiveList[i].ThreadStarted == TRUE);
/* Check if this was a new hive */
if (!CmpMachineHiveList[i].CmHive)
{
/* Make sure we allocated something */
ASSERT(CmpMachineHiveList[i].CmHive2 != NULL);
/* Build the base name */
RegName.Length = RegStart;
RtlInitUnicodeString(&TempName, CmpMachineHiveList[i].BaseName);
RtlAppendUnicodeStringToString(&RegName, &TempName);
/* Check if this is a child of the root */
if (RegName.Buffer[RegName.Length / sizeof(WCHAR) - 1] == OBJ_NAME_PATH_SEPARATOR)
{
/* Then setup the whole name */
RtlInitUnicodeString(&TempName, CmpMachineHiveList[i].Name);
RtlAppendUnicodeStringToString(&RegName, &TempName);
}
/* Now link the hive to its master */
Status = CmpLinkHiveToMaster(&RegName,
NULL,
CmpMachineHiveList[i].CmHive2,
CmpMachineHiveList[i].Allocate,
SecurityDescriptor);
if (Status != STATUS_SUCCESS)
{
/* Linking needs to work */
KeBugCheckEx(CONFIG_LIST_FAILED, 11, Status, i, (ULONG_PTR)&RegName);
}
/* Check if we had to allocate a new hive */
if (CmpMachineHiveList[i].Allocate)
{
/* Sync the new hive */
//HvSyncHive((PHHIVE)(CmpMachineHiveList[i].CmHive2));
}
}
/* Check if we created a new hive */
if (CmpMachineHiveList[i].CmHive2)
{
/* Add to HiveList key */
CmpAddToHiveFileList(CmpMachineHiveList[i].CmHive2);
}
}
/* Get rid of the SD */
ExFreePoolWithTag(SecurityDescriptor, TAG_CMSD);
/* Link SECURITY to SAM */
CmpLinkKeyToHive(L"\\Registry\\Machine\\Security\\SAM",
L"\\Registry\\Machine\\SAM\\SAM");
/* Link S-1-5-18 to .Default */
CmpNoVolatileCreates = FALSE;
CmpLinkKeyToHive(L"\\Registry\\User\\S-1-5-18",
L"\\Registry\\User\\.Default");
CmpNoVolatileCreates = TRUE;
}
CODE_SEG("INIT")
BOOLEAN
NTAPI
CmInitSystem1(VOID)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
HANDLE KeyHandle;
NTSTATUS Status;
PCMHIVE HardwareHive;
PSECURITY_DESCRIPTOR SecurityDescriptor;
PAGED_CODE();
/* Check if this is PE-boot */
if (InitIsWinPEMode)
{
/* Set registry to PE mode */
CmpMiniNTBoot = TRUE;
CmpShareSystemHives = TRUE;
}
/* Initialize the hive list and lock */
InitializeListHead(&CmpHiveListHead);
ExInitializePushLock(&CmpHiveListHeadLock);
ExInitializePushLock(&CmpLoadHiveLock);
/* Initialize registry lock */
ExInitializeResourceLite(&CmpRegistryLock);
/* Initialize the cache */
CmpInitializeCache();
/* Initialize allocation and delayed dereferencing */
CmpInitCmPrivateAlloc();
CmpInitCmPrivateDelayAlloc();
CmpInitDelayDerefKCBEngine();
/* Initialize callbacks */
CmpInitCallback();
/* Initialize self healing */
KeInitializeGuardedMutex(&CmpSelfHealQueueLock);
InitializeListHead(&CmpSelfHealQueueListHead);
/* Save the current process and lock the registry */
CmpSystemProcess = PsGetCurrentProcess();
/* Create the key object types */
Status = CmpCreateObjectTypes();
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 1, Status, 0);
}
/* Build the master hive */
Status = CmpInitializeHive(&CmiVolatileHive,
HINIT_CREATE,
HIVE_VOLATILE,
HFILE_TYPE_PRIMARY,
NULL,
NULL,
NULL,
NULL,
NULL,
0);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 2, Status, 0);
}
/* Create the \REGISTRY key node */
if (!CmpCreateRegistryRoot())
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 3, 0, 0);
}
/* Create the default security descriptor */
SecurityDescriptor = CmpHiveRootSecurityDescriptor();
/* Create '\Registry\Machine' key */
RtlInitUnicodeString(&KeyName, L"\\REGISTRY\\MACHINE");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
SecurityDescriptor);
Status = NtCreateKey(&KeyHandle,
KEY_READ | KEY_WRITE,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 5, Status, 0);
}
/* Close the handle */
NtClose(KeyHandle);
/* Create '\Registry\User' key */
RtlInitUnicodeString(&KeyName, L"\\REGISTRY\\USER");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
SecurityDescriptor);
Status = NtCreateKey(&KeyHandle,
KEY_READ | KEY_WRITE,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 6, Status, 0);
}
/* Close the handle */
NtClose(KeyHandle);
/* After this point, do not allow creating keys in the master hive */
CmpNoVolatileCreates = TRUE;
/* Initialize the system hive */
if (!CmpInitializeSystemHive(KeLoaderBlock))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 7, 0, 0);
}
/* Create the 'CurrentControlSet' link */
Status = CmpCreateControlSet(KeLoaderBlock);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 8, Status, 0);
}
/* Create the hardware hive */
Status = CmpInitializeHive(&HardwareHive,
HINIT_CREATE,
HIVE_VOLATILE,
HFILE_TYPE_PRIMARY,
NULL,
NULL,
NULL,
NULL,
NULL,
0);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 11, Status, 0);
}
/* Add the hive to the hive list */
CmpMachineHiveList[0].CmHive = HardwareHive;
/* Attach it to the machine key */
RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\HARDWARE");
Status = CmpLinkHiveToMaster(&KeyName,
NULL,
HardwareHive,
TRUE,
SecurityDescriptor);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 12, Status, 0);
}
/* Add to HiveList key */
CmpAddToHiveFileList(HardwareHive);
/* Free the security descriptor */
ExFreePoolWithTag(SecurityDescriptor, TAG_CMSD);
/* Fill out the Hardware key with the ARC Data from the Loader */
Status = CmpInitializeHardwareConfiguration(KeLoaderBlock);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 13, Status, 0);
}
/* Initialize machine-dependent information into the registry */
Status = CmpInitializeMachineDependentConfiguration(KeLoaderBlock);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 14, Status, 0);
}
/* Initialize volatile registry settings */
Status = CmpSetSystemValues(KeLoaderBlock);
if (!NT_SUCCESS(Status))
{
/* Bugcheck */
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 1, 15, Status, 0);
}
/* Free the load options */
ExFreePoolWithTag(CmpLoadOptions.Buffer, TAG_CM);
/* If we got here, all went well */
return TRUE;
}
CODE_SEG("INIT")
PUNICODE_STRING*
NTAPI
CmGetSystemDriverList(VOID)
{
LIST_ENTRY DriverList;
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
PCM_KEY_BODY KeyBody;
PHHIVE Hive;
HCELL_INDEX RootCell, ControlCell;
HANDLE KeyHandle;
UNICODE_STRING KeyName;
PLIST_ENTRY NextEntry;
ULONG i;
PUNICODE_STRING* ServicePath = NULL;
BOOLEAN Success, AutoSelect;
PBOOT_DRIVER_LIST_ENTRY DriverEntry;
PAGED_CODE();
/* Initialize the driver list */
InitializeListHead(&DriverList);
/* Open the system hive key */
RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\System");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenKey(&KeyHandle, KEY_READ, &ObjectAttributes);
if (!NT_SUCCESS(Status)) return NULL;
/* Reference the key object to get the root hive/cell to access directly */
Status = ObReferenceObjectByHandle(KeyHandle,
KEY_QUERY_VALUE,
CmpKeyObjectType,
KernelMode,
(PVOID*)&KeyBody,
NULL);
if (!NT_SUCCESS(Status))
{
/* Fail */
NtClose(KeyHandle);
return NULL;
}
/* Do all this under the registry lock */
CmpLockRegistryExclusive();
/* Get the hive and key cell */
Hive = KeyBody->KeyControlBlock->KeyHive;
RootCell = KeyBody->KeyControlBlock->KeyCell;
/* Open the current control set key */
RtlInitUnicodeString(&KeyName, L"Current");
ControlCell = CmpFindControlSet(Hive, RootCell, &KeyName, &AutoSelect);
if (ControlCell == HCELL_NIL) goto EndPath;
/* Find all system drivers */
Success = CmpFindDrivers(Hive, ControlCell, SystemLoad, NULL, &DriverList);
if (!Success) goto EndPath;
/* Sort by group/tag */
if (!CmpSortDriverList(Hive, ControlCell, &DriverList)) goto EndPath;
/* Remove circular dependencies (cycles) and sort */
if (!CmpResolveDriverDependencies(&DriverList)) goto EndPath;
/* Loop the list to count drivers */
for (i = 0, NextEntry = DriverList.Flink;
NextEntry != &DriverList;
i++, NextEntry = NextEntry->Flink);
/* Allocate the array */
ServicePath = ExAllocatePool(NonPagedPool, (i + 1) * sizeof(PUNICODE_STRING));
if (!ServicePath) KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 2, 1, 0, 0);
/* Loop the driver list */
for (i = 0, NextEntry = DriverList.Flink;
NextEntry != &DriverList;
i++, NextEntry = NextEntry->Flink)
{
/* Get the entry */
DriverEntry = CONTAINING_RECORD(NextEntry, BOOT_DRIVER_LIST_ENTRY, Link);
/* Allocate the path for the caller */
ServicePath[i] = ExAllocatePool(NonPagedPool, sizeof(UNICODE_STRING));
if (!ServicePath[i])
{
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 2, 1, 0, 0);
}
/* Duplicate the registry path */
Status = RtlDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE,
&DriverEntry->RegistryPath,
ServicePath[i]);
if (!NT_SUCCESS(Status))
{
KeBugCheckEx(CONFIG_INITIALIZATION_FAILED, 2, 1, 0, 0);
}
}
/* Terminate the list */
ServicePath[i] = NULL;
EndPath:
/* Free the driver list if we had one */
if (!IsListEmpty(&DriverList)) CmpFreeDriverList(Hive, &DriverList);
/* Unlock the registry */
CmpUnlockRegistry();
/* Close the key handle and dereference the object, then return the path */
ObDereferenceObject(KeyBody);
NtClose(KeyHandle);
return ServicePath;
}
VOID
NTAPI
CmpLockRegistryExclusive(VOID)
{
/* Enter a critical region and lock the registry */
KeEnterCriticalRegion();
ExAcquireResourceExclusiveLite(&CmpRegistryLock, TRUE);
/* Sanity check */
ASSERT(CmpFlushStarveWriters == 0);
RtlGetCallersAddress(&CmpRegistryLockCaller, &CmpRegistryLockCallerCaller);
}
VOID
NTAPI
CmpLockRegistry(VOID)
{
/* Enter a critical region */
KeEnterCriticalRegion();
/* Check if we have to starve writers */
if (CmpFlushStarveWriters)
{
/* Starve exlusive waiters */
ExAcquireSharedStarveExclusive(&CmpRegistryLock, TRUE);
}
else
{
/* Just grab the lock */
ExAcquireResourceSharedLite(&CmpRegistryLock, TRUE);
}
}
BOOLEAN
NTAPI
CmpTestRegistryLock(VOID)
{
/* Test the lock */
return !ExIsResourceAcquiredSharedLite(&CmpRegistryLock) ? FALSE : TRUE;
}
BOOLEAN
NTAPI
CmpTestRegistryLockExclusive(VOID)
{
/* Test the lock */
return !ExIsResourceAcquiredExclusiveLite(&CmpRegistryLock) ? FALSE : TRUE;
}
VOID
NTAPI
CmpLockHiveFlusherExclusive(IN PCMHIVE Hive)
{
/* Lock the flusher. We should already be in a critical section */
CMP_ASSERT_REGISTRY_LOCK_OR_LOADING(Hive);
ASSERT((ExIsResourceAcquiredShared(Hive->FlusherLock) == 0) &&
(ExIsResourceAcquiredExclusiveLite(Hive->FlusherLock) == 0));
ExAcquireResourceExclusiveLite(Hive->FlusherLock, TRUE);
}
VOID
NTAPI
CmpLockHiveFlusherShared(IN PCMHIVE Hive)
{
/* Lock the flusher. We should already be in a critical section */
CMP_ASSERT_REGISTRY_LOCK_OR_LOADING(Hive);
ASSERT((ExIsResourceAcquiredShared(Hive->FlusherLock) == 0) &&
(ExIsResourceAcquiredExclusiveLite(Hive->FlusherLock) == 0));
ExAcquireResourceSharedLite(Hive->FlusherLock, TRUE);
}
VOID
NTAPI
CmpUnlockHiveFlusher(IN PCMHIVE Hive)
{
/* Sanity check */
CMP_ASSERT_REGISTRY_LOCK_OR_LOADING(Hive);
CMP_ASSERT_FLUSH_LOCK(Hive);
/* Release the lock */
ExReleaseResourceLite(Hive->FlusherLock);
}
BOOLEAN
NTAPI
CmpTestHiveFlusherLockShared(IN PCMHIVE Hive)
{
/* Test the lock */
return !ExIsResourceAcquiredSharedLite(Hive->FlusherLock) ? FALSE : TRUE;
}
BOOLEAN
NTAPI
CmpTestHiveFlusherLockExclusive(IN PCMHIVE Hive)
{
/* Test the lock */
return !ExIsResourceAcquiredExclusiveLite(Hive->FlusherLock) ? FALSE : TRUE;
}
VOID
NTAPI
CmpUnlockRegistry(VOID)
{
/* Sanity check */
CMP_ASSERT_REGISTRY_LOCK();
/* Check if we should flush the registry */
if (CmpFlushOnLockRelease)
{
/* The registry should be exclusively locked for this */
CMP_ASSERT_EXCLUSIVE_REGISTRY_LOCK();
/* Flush the registry */
CmpDoFlushAll(TRUE);
CmpFlushOnLockRelease = FALSE;
}
/* Release the lock and leave the critical region */
ExReleaseResourceLite(&CmpRegistryLock);
KeLeaveCriticalRegion();
}
VOID
NTAPI
CmpAcquireTwoKcbLocksExclusiveByKey(IN ULONG ConvKey1,
IN ULONG ConvKey2)
{
ULONG Index1, Index2;
/* Sanity check */
CMP_ASSERT_REGISTRY_LOCK();
/* Get hash indexes */
Index1 = GET_HASH_INDEX(ConvKey1);
Index2 = GET_HASH_INDEX(ConvKey2);
/* See which one is highest */
if (Index1 < Index2)
{
/* Grab them in the proper order */
CmpAcquireKcbLockExclusiveByKey(ConvKey1);
CmpAcquireKcbLockExclusiveByKey(ConvKey2);
}
else
{
/* Grab the second one first, then the first */
CmpAcquireKcbLockExclusiveByKey(ConvKey2);
if (Index1 != Index2) CmpAcquireKcbLockExclusiveByKey(ConvKey1);
}
}
VOID
NTAPI
CmpReleaseTwoKcbLockByKey(IN ULONG ConvKey1,
IN ULONG ConvKey2)
{
ULONG Index1, Index2;
/* Sanity check */
CMP_ASSERT_REGISTRY_LOCK();
/* Get hash indexes */
Index1 = GET_HASH_INDEX(ConvKey1);
Index2 = GET_HASH_INDEX(ConvKey2);
ASSERT((GET_HASH_ENTRY(CmpCacheTable, ConvKey2)->Owner == KeGetCurrentThread()) ||
(CmpTestRegistryLockExclusive()));
/* See which one is highest */
if (Index1 < Index2)
{
/* Grab them in the proper order */
ASSERT((GET_HASH_ENTRY(CmpCacheTable, ConvKey1)->Owner == KeGetCurrentThread()) ||
(CmpTestRegistryLockExclusive()));
CmpReleaseKcbLockByKey(ConvKey2);
CmpReleaseKcbLockByKey(ConvKey1);
}
else
{
/* Release the first one first, then the second */
if (Index1 != Index2)
{
ASSERT((GET_HASH_ENTRY(CmpCacheTable, ConvKey1)->Owner == KeGetCurrentThread()) ||
(CmpTestRegistryLockExclusive()));
CmpReleaseKcbLockByKey(ConvKey1);
}
CmpReleaseKcbLockByKey(ConvKey2);
}
}
VOID
NTAPI
CmShutdownSystem(VOID)
{
PLIST_ENTRY ListEntry;
PCMHIVE Hive;
/* Kill the workers */
if (!CmFirstTime) CmpShutdownWorkers();
/* Flush all hives */
CmpLockRegistryExclusive();
CmpDoFlushAll(TRUE);
/* Close all hive files */
ListEntry = CmpHiveListHead.Flink;
while (ListEntry != &CmpHiveListHead)
{
Hive = CONTAINING_RECORD(ListEntry, CMHIVE, HiveList);
CmpCloseHiveFiles(Hive);
ListEntry = ListEntry->Flink;
}
CmpUnlockRegistry();
}
VOID
NTAPI
CmpSetVersionData(VOID)
{
NTSTATUS Status;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
UNICODE_STRING ValueName;
UNICODE_STRING ValueData;
ANSI_STRING TempString;
HANDLE SoftwareKeyHandle = NULL;
HANDLE MicrosoftKeyHandle = NULL;
HANDLE WindowsNtKeyHandle = NULL;
HANDLE CurrentVersionKeyHandle = NULL;
WCHAR Buffer[128]; // Buffer large enough to contain a full ULONG in decimal
// representation, and the full 'CurrentType' string.
/*
* Open the 'HKLM\Software\Microsoft\Windows NT\CurrentVersion' key
* (create the intermediate subkeys if needed).
*/
RtlInitUnicodeString(&KeyName, L"\\REGISTRY\\MACHINE\\SOFTWARE");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
NULL,
NULL);
Status = NtCreateKey(&SoftwareKeyHandle,
KEY_CREATE_SUB_KEY,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName, Status);
return;
}
RtlInitUnicodeString(&KeyName, L"Microsoft");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
SoftwareKeyHandle,
NULL);
Status = NtCreateKey(&MicrosoftKeyHandle,
KEY_CREATE_SUB_KEY,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName, Status);
goto Quit;
}
RtlInitUnicodeString(&KeyName, L"Windows NT");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
MicrosoftKeyHandle,
NULL);
Status = NtCreateKey(&WindowsNtKeyHandle,
KEY_CREATE_SUB_KEY,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName, Status);
goto Quit;
}
RtlInitUnicodeString(&KeyName, L"CurrentVersion");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
WindowsNtKeyHandle,
NULL);
Status = NtCreateKey(&CurrentVersionKeyHandle,
KEY_CREATE_SUB_KEY | KEY_SET_VALUE,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to create key %wZ (Status: %08lx)\n", &KeyName, Status);
goto Quit;
}
/* Set the 'CurrentVersion' value */
RtlInitUnicodeString(&ValueName, L"CurrentVersion");
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
CmVersionString.Buffer,
CmVersionString.Length + sizeof(WCHAR));
/* Set the 'CurrentBuildNumber' value */
RtlInitUnicodeString(&ValueName, L"CurrentBuildNumber");
RtlInitEmptyUnicodeString(&ValueData, Buffer, sizeof(Buffer));
RtlIntegerToUnicodeString(NtBuildNumber & 0xFFFF, 10, &ValueData);
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
ValueData.Buffer,
ValueData.Length + sizeof(WCHAR));
/* Set the 'BuildLab' value */
RtlInitUnicodeString(&ValueName, L"BuildLab");
RtlInitAnsiString(&TempString, NtBuildLab);
Status = RtlAnsiStringToUnicodeString(&ValueData, &TempString, FALSE);
if (NT_SUCCESS(Status))
{
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
ValueData.Buffer,
ValueData.Length + sizeof(WCHAR));
}
/* Set the 'CurrentType' value */
RtlInitUnicodeString(&ValueName, L"CurrentType");
RtlStringCbPrintfW(Buffer, sizeof(Buffer),
L"%s %s",
#ifdef CONFIG_SMP
L"Multiprocessor"
#else
L"Uniprocessor"
#endif
,
#if (DBG == 1)
L"Checked"
#else
L"Free"
#endif
);
RtlInitUnicodeString(&ValueData, Buffer);
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
ValueData.Buffer,
ValueData.Length + sizeof(WCHAR));
/* Set the 'CSDVersion' value */
RtlInitUnicodeString(&ValueName, L"CSDVersion");
if (CmCSDVersionString.Length != 0)
{
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
CmCSDVersionString.Buffer,
CmCSDVersionString.Length + sizeof(WCHAR));
}
else
{
NtDeleteValueKey(CurrentVersionKeyHandle, &ValueName);
}
/* Set the 'CSDBuildNumber' value */
RtlInitUnicodeString(&ValueName, L"CSDBuildNumber");
if (CmNtSpBuildNumber != 0)
{
RtlInitEmptyUnicodeString(&ValueData, Buffer, sizeof(Buffer));
RtlIntegerToUnicodeString(CmNtSpBuildNumber, 10, &ValueData);
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
ValueData.Buffer,
ValueData.Length + sizeof(WCHAR));
}
else
{
NtDeleteValueKey(CurrentVersionKeyHandle, &ValueName);
}
/* Set the 'SystemRoot' value */
RtlInitUnicodeString(&ValueName, L"SystemRoot");
NtSetValueKey(CurrentVersionKeyHandle,
&ValueName,
0,
REG_SZ,
NtSystemRoot.Buffer,
NtSystemRoot.Length + sizeof(WCHAR));
Quit:
/* Close the keys */
if (CurrentVersionKeyHandle != NULL)
NtClose(CurrentVersionKeyHandle);
if (WindowsNtKeyHandle != NULL)
NtClose(WindowsNtKeyHandle);
if (MicrosoftKeyHandle != NULL)
NtClose(MicrosoftKeyHandle);
if (SoftwareKeyHandle != NULL)
NtClose(SoftwareKeyHandle);
}
/* EOF */
Reference in a new issue View git blame Copy permalink