cmsysini.c File Reference

#include "ntoskrnl.h"
#include "debug.h"

Include dependency graph for cmsysini.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
BOOLEAN NTAPI	CmpLinkKeyToHive (_In_z_ PCWSTR LinkKeyName, _In_z_ PCWSTR TargetKeyName)
VOID NTAPI	CmpDeleteKeyObject (PVOID DeletedObject)
VOID NTAPI	CmpCloseKeyObject (IN PEPROCESS Process OPTIONAL, IN PVOID Object, IN ACCESS_MASK GrantedAccess, IN ULONG ProcessHandleCount, IN ULONG SystemHandleCount)
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)
NTSTATUS NTAPI	CmpInitHiveFromFile (IN PCUNICODE_STRING HiveName, IN ULONG HiveFlags, OUT PCMHIVE *Hive, IN OUT PBOOLEAN New, IN ULONG CheckFlags)
NTSTATUS NTAPI	CmpSetSystemValues (IN PLOADER_PARAMETER_BLOCK LoaderBlock)
static NTSTATUS	CmpCreateHardwareProfile (HANDLE ControlSetHandle)
NTSTATUS NTAPI	CmpCreateControlSet (IN PLOADER_PARAMETER_BLOCK LoaderBlock)
NTSTATUS NTAPI	CmpLinkHiveToMaster (IN PUNICODE_STRING LinkName, IN HANDLE RootDirectory, IN PCMHIVE RegistryHive, IN BOOLEAN Allocate, IN PSECURITY_DESCRIPTOR SecurityDescriptor)
BOOLEAN NTAPI	CmpInitializeSystemHive (IN PLOADER_PARAMETER_BLOCK LoaderBlock)
NTSTATUS NTAPI	CmpCreateObjectTypes (VOID)
BOOLEAN NTAPI	CmpCreateRootNode (IN PHHIVE Hive, IN PCWSTR Name, OUT PHCELL_INDEX Index)
BOOLEAN NTAPI	CmpCreateRegistryRoot (VOID)
static PCWSTR	CmpGetRegistryPath (VOID)
static VOID	CmpHasAlternateHiveDiverged (_In_ PCUNICODE_STRING FileName, _In_ PCMHIVE CmMainmHive, _In_ HANDLE AlternateHandle, _Out_ PBOOLEAN Diverged)
	Checks if the primary and alternate backing hive are the same, by determining the time stamp of both hives.
	_Function_class_ (KSTART_ROUTINE)
VOID NTAPI	CmpInitializeHiveList (VOID)
BOOLEAN NTAPI	CmInitSystem1 (VOID)
PUNICODE_STRING *NTAPI	CmGetSystemDriverList (VOID)
VOID NTAPI	CmpLockRegistryExclusive (VOID)
VOID NTAPI	CmpLockRegistry (VOID)
BOOLEAN NTAPI	CmpTestRegistryLock (VOID)
BOOLEAN NTAPI	CmpTestRegistryLockExclusive (VOID)
VOID NTAPI	CmpLockHiveFlusherExclusive (IN PCMHIVE Hive)
VOID NTAPI	CmpLockHiveFlusherShared (IN PCMHIVE Hive)
VOID NTAPI	CmpUnlockHiveFlusher (IN PCMHIVE Hive)
BOOLEAN NTAPI	CmpTestHiveFlusherLockShared (IN PCMHIVE Hive)
BOOLEAN NTAPI	CmpTestHiveFlusherLockExclusive (IN PCMHIVE Hive)
VOID NTAPI	CmpUnlockRegistry (VOID)
VOID NTAPI	CmpAcquireTwoKcbLocksExclusiveByKey (IN ULONG ConvKey1, IN ULONG ConvKey2)
VOID NTAPI	CmpReleaseTwoKcbLockByKey (IN ULONG ConvKey1, IN ULONG ConvKey2)
VOID NTAPI	CmShutdownSystem (VOID)
VOID NTAPI	CmpSetVersionData (VOID)

Variables
POBJECT_TYPE	CmpKeyObjectType
PCMHIVE	CmiVolatileHive
LIST_ENTRY	CmpHiveListHead
ERESOURCE	CmpRegistryLock
KGUARDED_MUTEX	CmpSelfHealQueueLock
LIST_ENTRY	CmpSelfHealQueueListHead
KEVENT	CmpLoadWorkerEvent
LONG	CmpLoadWorkerIncrement
PEPROCESS	CmpSystemProcess
PVOID	CmpRegistryLockCallerCaller
PVOID	CmpRegistryLockCaller
BOOLEAN	CmpFlushOnLockRelease
BOOLEAN	CmpSpecialBootCondition
BOOLEAN	CmpNoWrite = TRUE
BOOLEAN	CmpWasSetupBoot
BOOLEAN	CmpProfileLoaded
BOOLEAN	CmpNoVolatileCreates
ULONG	CmpTraceLevel = 0
BOOLEAN	HvShutdownComplete = FALSE
LONG	CmpFlushStarveWriters
BOOLEAN	CmFirstTime

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file cmsysini.c.

Function Documentation

_Function_class_()

_Function_class_

(

KSTART_ROUTINE

)

Definition at line 1261 of file cmsysini.c.

{
    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, AlternateHandle = NULL;
    NTSTATUS Status = STATUS_SUCCESS;
    PVOID ErrorParameters;
    BOOLEAN HasDiverged;
    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,
                                     CM_CHECK_REGISTRY_PURGE_VOLATILES);
        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".ALT",
                                      &PrimaryHandle,
                                      &AlternateHandle,
                                      &PrimaryDisposition,
                                      &SecondaryDisposition,
                                      TRUE,
                                      TRUE,
                                      FALSE,
                                      &ClusterSize);
            if (!NT_SUCCESS(Status) || !AlternateHandle)
            {
                /* Couldn't open the hive or its alternate 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 */
            /*
             * FIXME: Any hive that relies on the alternate hive for recovery purposes
             * will only get an alternate hive. As a result, the LOG file would never
             * get synced each time a write is done to the hive. In the future it would
             * be best to adapt the code so that a primary hive can use a LOG and ALT
             * hives at the same time.
             */
            CmHive->FileHandles[HFILE_TYPE_ALTERNATE] = AlternateHandle;
            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);
            //}
 
            /* FreeLdr has recovered the hive with a log, we must do a flush */
            if (CmHive->Hive.BaseBlock->BootRecover == HBOOT_BOOT_RECOVERED_BY_HIVE_LOG)
            {
                DPRINT1("FreeLdr recovered the hive (hive 0x%p)\n", CmHive);
                RtlSetAllBits(&CmHive->Hive.DirtyVector);
                CmHive->Hive.DirtyCount = CmHive->Hive.DirtyVector.SizeOfBitMap;
                HvSyncHive((PHHIVE)CmHive);
            }
            else
            {
                /*
                 * Check whether the both primary and alternate hives are the same,
                 * or that the primary or alternate were created for the first time.
                 * Do a write against the alternate hive in these cases.
                 */
                CmpHasAlternateHiveDiverged(&FileName,
                                            CmHive,
                                            AlternateHandle,
                                            &HasDiverged);
                if (HasDiverged ||
                    PrimaryDisposition == FILE_CREATED ||
                    SecondaryDisposition == FILE_CREATED)
                {
                    if (!HvWriteAlternateHive((PHHIVE)CmHive))
                    {
                        DPRINT1("Failed to write to alternate hive\n");
                        goto Exit;
                    }
                }
            }
 
            /* Finally, set our allocated hive to the same hive we've had */
            CmpMachineHiveList[i].CmHive2 = CmHive;
            ASSERT(CmpMachineHiveList[i].CmHive == CmpMachineHiveList[i].CmHive2);
        }
    }
 
Exit:
    /* 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);
}

CmGetSystemDriverList()

PUNICODE_STRING *NTAPI CmGetSystemDriverList

(

VOID

)

Definition at line 1839 of file cmsysini.c.

{
    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;
}

Referenced by IopInitializeSystemDrivers().

CmInitSystem1()

BOOLEAN NTAPI CmInitSystem1

(

VOID

)

Definition at line 1621 of file cmsysini.c.

{
    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 the registry in PE mode and load the system hives in shared 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,
                               NULL,
                               CM_CHECK_REGISTRY_DONT_PURGE_VOLATILES);
    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,
                               NULL,
                               CM_CHECK_REGISTRY_DONT_PURGE_VOLATILES);
    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;
}

Referenced by Phase1InitializationDiscard().

CmpAcquireTwoKcbLocksExclusiveByKey()

VOID NTAPI CmpAcquireTwoKcbLocksExclusiveByKey	(	IN ULONG	ConvKey1,
		IN ULONG	ConvKey2
	)

Definition at line 2079 of file cmsysini.c.

{
    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);
    }
}

Referenced by CmDeleteKey(), CmpCreateKeyControlBlock(), and NtUnloadKey2().

CmpCloseKeyObject()

VOID NTAPI CmpCloseKeyObject	(	IN PEPROCESS Process	OPTIONAL,
		IN PVOID	Object,
		IN ACCESS_MASK	GrantedAccess,
		IN ULONG	ProcessHandleCount,
		IN ULONG	SystemHandleCount
	)

Definition at line 162 of file cmsysini.c.

{
    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);
    }
}

Referenced by CmpCreateObjectTypes().

CmpCreateControlSet()

NTSTATUS NTAPI CmpCreateControlSet

(

IN PLOADER_PARAMETER_BLOCK

LoaderBlock

)

Definition at line 528 of file cmsysini.c.

{
    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;
}

Referenced by CmInitSystem1().

CmpCreateHardwareProfile()

static NTSTATUS CmpCreateHardwareProfile ( HANDLE  ControlSetHandle )

static

Definition at line 456 of file cmsysini.c.

{
    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;
}

Referenced by CmpCreateControlSet().

CmpCreateObjectTypes()

NTSTATUS NTAPI CmpCreateObjectTypes

(

VOID

)

Definition at line 980 of file cmsysini.c.

{
    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);
}

Referenced by CmInitSystem1().

CmpCreateRegistryRoot()

BOOLEAN NTAPI CmpCreateRegistryRoot

(

VOID

)

Definition at line 1070 of file cmsysini.c.

{
    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)
    {
        ObDereferenceObject(RootKey);
        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();
    RootKey->KcbLocked = FALSE;
 
    /* 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))
    {
        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;
}

Referenced by CmInitSystem1().

CmpCreateRootNode()

BOOLEAN NTAPI CmpCreateRootNode	(	IN PHHIVE	Hive,
		IN PCWSTR	Name,
		OUT PHCELL_INDEX	Index
	)

Definition at line 1014 of file cmsysini.c.

{
    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;
}

Referenced by CmpCreateRegistryRoot().

CmpDeleteKeyObject()

VOID NTAPI CmpDeleteKeyObject

(

PVOID

DeletedObject

)

Definition at line 112 of file cmsysini.c.

{
    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, KeyBody->KcbLocked);
 
            /* Dereference the KCB */
            CmpDelayDerefKeyControlBlock(Kcb);
        }
    }
 
    /* Release the registry lock */
    CmpUnlockRegistry();
 
    /* Do the post callback */
    PostOperationInfo.Status = STATUS_SUCCESS;
    CmiCallRegisteredCallbacks(RegNtPostKeyHandleClose, &PostOperationInfo);
}

Referenced by CmpCreateObjectTypes().

CmpGetRegistryPath()

static PCWSTR CmpGetRegistryPath ( VOID  )

static

Definition at line 1172 of file cmsysini.c.

{
    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;
}

Referenced by _Function_class_(), and CmpInitializeHiveList().

CmpHasAlternateHiveDiverged()

static VOID CmpHasAlternateHiveDiverged ( _In_ PCUNICODE_STRING  FileName, _In_ PCMHIVE  CmMainmHive, _In_ HANDLE  AlternateHandle, _Out_ PBOOLEAN  Diverged  )

static

Checks if the primary and alternate backing hive are the same, by determining the time stamp of both hives.

Parameters

[in]	FileName	A pointer to a string containing the file name of the primary hive.
[in]	CmMainmHive	A pointer to a CM hive descriptor associated with the primary hive.
[in]	AlternateHandle	A handle to a file that represents the alternate hive.
[in]	Diverged	A pointer to a boolean value, if both hives are the same it returns TRUE. Otherwise it returns FALSE.

Definition at line 1213 of file cmsysini.c.

{
    PHHIVE Hive, AlternateHive;
    NTSTATUS Status;
    PCMHIVE CmiAlternateHive;
 
    /* Assume it has not diverged */
    *Diverged = FALSE;
 
    /* Initialize the SYSTEM alternate hive */
    Status = CmpInitializeHive(&CmiAlternateHive,
                               HINIT_FILE,
                               0,
                               HFILE_TYPE_PRIMARY,
                               NULL,
                               AlternateHandle,
                               NULL,
                               NULL,
                               NULL,
                               FileName,
                               CM_CHECK_REGISTRY_DONT_PURGE_VOLATILES);
    if (!NT_SUCCESS(Status))
    {
        /* Assume it has diverged... */
        DPRINT1("Failed to initialize the alternate hive to check for diversion (Status 0x%lx)\n", Status);
        *Diverged = TRUE;
        return;
    }
 
    /*
     * Check the timestamp of both hives. If they do not match they
     * have diverged, the kernel has to synchronize the both hives.
     */
    Hive = &CmMainmHive->Hive;
    AlternateHive = &CmiAlternateHive->Hive;
    if (AlternateHive->BaseBlock->TimeStamp.QuadPart !=
        Hive->BaseBlock->TimeStamp.QuadPart)
    {
        *Diverged = TRUE;
    }
 
    CmpDestroyHive(CmiAlternateHive);
}

Referenced by _Function_class_().

CmpInitHiveFromFile()

NTSTATUS NTAPI CmpInitHiveFromFile	(	IN PCUNICODE_STRING	HiveName,
		IN ULONG	HiveFlags,
		OUT PCMHIVE *	Hive,
		IN OUT PBOOLEAN	New,
		IN ULONG	CheckFlags
	)

Definition at line 289 of file cmsysini.c.

{
    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 the system hives are opened in shared mode */
    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,
                               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;
}

Referenced by _Function_class_(), and CmpCmdHiveOpen().

CmpInitializeHiveList()

VOID NTAPI CmpInitializeHiveList

(

VOID

)

Definition at line 1467 of file cmsysini.c.

{
    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();
 
    /* Reenable hive writes 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 this root hive as volatile, if opened in shared 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;
}

Referenced by CmpCmdInit().

CmpInitializeSystemHive()

BOOLEAN NTAPI CmpInitializeSystemHive

(

IN PLOADER_PARAMETER_BLOCK

LoaderBlock

)

Definition at line 869 of file cmsysini.c.

{
    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;
 
    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_ALTERNATE,
                               HiveBase,
                               NULL,
                               NULL,
                               NULL,
                               NULL,
                               &HiveName,
                               HiveBase ? CM_CHECK_REGISTRY_PURGE_VOLATILES : CM_CHECK_REGISTRY_DONT_PURGE_VOLATILES);
    if (!NT_SUCCESS(Status))
    {
        return FALSE;
    }
 
    /* Set the hive filename */
    if (!RtlCreateUnicodeString(&SystemHive->FileFullPath, L"\\SystemRoot\\System32\\Config\\SYSTEM"))
        return FALSE;
 
    /* Load the system hive as volatile, if opened in shared 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 & HBOOT_TYPE_SELF_HEAL)
        {
            /* 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;
}

Referenced by CmInitSystem1().

CmpLinkHiveToMaster()

NTSTATUS NTAPI CmpLinkHiveToMaster	(	IN PUNICODE_STRING	LinkName,
		IN HANDLE	RootDirectory,
		IN PCMHIVE	RegistryHive,
		IN BOOLEAN	Allocate,
		IN PSECURITY_DESCRIPTOR	SecurityDescriptor
	)

Definition at line 802 of file cmsysini.c.

{
    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;
}

Referenced by CmInitSystem1(), CmLoadKey(), CmpInitializeHiveList(), and CmpInitializeSystemHive().

CmpLinkKeyToHive()

BOOLEAN NTAPI CmpLinkKeyToHive	(	_In_z_ PCWSTR	LinkKeyName,
		_In_z_ PCWSTR	TargetKeyName
	)

Definition at line 45 of file cmsysini.c.

{
    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;
}

Referenced by CmpInitializeHiveList(), and RegInitializeRegistry().

CmpLockHiveFlusherExclusive()

VOID NTAPI CmpLockHiveFlusherExclusive

(

IN PCMHIVE

Hive

)

Definition at line 2006 of file cmsysini.c.

{
    /* 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);
}

Referenced by CmFlushKey(), CmLoadKey(), CmpDoFlushAll(), and CmpUnlinkHiveFromMaster().

CmpLockHiveFlusherShared()

VOID NTAPI CmpLockHiveFlusherShared

(

IN PCMHIVE

Hive

)

Definition at line 2017 of file cmsysini.c.

{
    /* 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);
}

Referenced by CmDeleteKey(), CmDeleteValueKey(), CmpCreateLinkNode(), CmpDoCreate(), and CmSetValueKey().

CmpLockRegistry()

VOID NTAPI CmpLockRegistry

(

VOID

)

Definition at line 1970 of file cmsysini.c.

{
    /* 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);
    }
}

Referenced by _Function_class_(), CmDeleteKey(), CmDeleteValueKey(), CmEnumerateKey(), CmEnumerateValueKey(), CmLoadKey(), CmpBuildHashStackAndLookupCache(), CmpDeleteKeyObject(), CmpQueryKeyName(), CmpSecurityMethod(), CmQueryKey(), CmQueryValueKey(), CmSaveKey(), CmSaveMergedKeys(), CmSetValueKey(), NtFlushKey(), and NtUnloadKey2().

CmpLockRegistryExclusive()

VOID NTAPI CmpLockRegistryExclusive

(

VOID

)

Definition at line 1957 of file cmsysini.c.

{
    /* Enter a critical region and lock the registry */
    KeEnterCriticalRegion();
    ExAcquireResourceExclusiveLite(&CmpRegistryLock, TRUE);
 
    /* Sanity check */
    ASSERT(CmpFlushStarveWriters == 0);
    RtlGetCallersAddress(&CmpRegistryLockCaller, &CmpRegistryLockCallerCaller);
}

Referenced by _Function_class_(), CmGetSystemDriverList(), CmLoadKey(), CmShutdownSystem(), NtInitializeRegistry(), NtQueryOpenSubKeys(), and NtUnloadKey2().

CmpQueryKeyName()

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
	)

Definition at line 187 of file cmsysini.c.

{
    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;
}

Referenced by CmpCreateObjectTypes().

CmpReleaseTwoKcbLockByKey()

VOID NTAPI CmpReleaseTwoKcbLockByKey	(	IN ULONG	ConvKey1,
		IN ULONG	ConvKey2
	)

Definition at line 2108 of file cmsysini.c.

{
    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);
    }
}

Referenced by CmDeleteKey(), CmpCreateKeyControlBlock(), CmUnloadKey(), and NtUnloadKey2().

CmpSetSystemValues()

NTSTATUS NTAPI CmpSetSystemValues

(

IN PLOADER_PARAMETER_BLOCK

LoaderBlock

)

Definition at line 401 of file cmsysini.c.

{
    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;
}

Referenced by CmInitSystem1().

CmpSetVersionData()

VOID NTAPI CmpSetVersionData

(

VOID

)

Definition at line 2182 of file cmsysini.c.

{
    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);
}

Referenced by NtInitializeRegistry().

CmpTestHiveFlusherLockExclusive()

BOOLEAN NTAPI CmpTestHiveFlusherLockExclusive

(

IN PCMHIVE

Hive

)

Definition at line 2048 of file cmsysini.c.

{
    /* Test the lock */
    return !ExIsResourceAcquiredExclusiveLite(Hive->FlusherLock) ? FALSE : TRUE;
}

CmpTestHiveFlusherLockShared()

BOOLEAN NTAPI CmpTestHiveFlusherLockShared

(

IN PCMHIVE

Hive

)

Definition at line 2040 of file cmsysini.c.

{
    /* Test the lock */
    return !ExIsResourceAcquiredSharedLite(Hive->FlusherLock) ? FALSE : TRUE;
}

CmpTestRegistryLock()

BOOLEAN NTAPI CmpTestRegistryLock

(

VOID

)

Definition at line 1990 of file cmsysini.c.

{
    /* Test the lock */
    return !ExIsResourceAcquiredSharedLite(&CmpRegistryLock) ? FALSE : TRUE;
}

CmpTestRegistryLockExclusive()

BOOLEAN NTAPI CmpTestRegistryLockExclusive

(

VOID

)

Definition at line 1998 of file cmsysini.c.

{
    /* Test the lock */
    return !ExIsResourceAcquiredExclusiveLite(&CmpRegistryLock) ? FALSE : TRUE;
}

Referenced by CmFlushKey(), and CmpReleaseTwoKcbLockByKey().

CmpUnlockHiveFlusher()

VOID NTAPI CmpUnlockHiveFlusher

(

IN PCMHIVE

Hive

)

Definition at line 2028 of file cmsysini.c.

{
    /* Sanity check */
    CMP_ASSERT_REGISTRY_LOCK_OR_LOADING(Hive);
    CMP_ASSERT_FLUSH_LOCK(Hive);
 
    /* Release the lock */
    ExReleaseResourceLite(Hive->FlusherLock);
}

Referenced by CmDeleteKey(), CmDeleteValueKey(), CmFlushKey(), CmLoadKey(), CmpCreateLinkNode(), CmpDoCreate(), CmpDoFlushAll(), CmpUnlinkHiveFromMaster(), and CmSetValueKey().

CmpUnlockRegistry()

VOID NTAPI CmpUnlockRegistry

(

VOID

)

Definition at line 2056 of file cmsysini.c.

{
    /* 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();
}

Referenced by _Function_class_(), CmDeleteKey(), CmDeleteValueKey(), CmEnumerateKey(), CmEnumerateValueKey(), CmGetSystemDriverList(), CmLoadKey(), CmpDeleteKeyObject(), CmpParseKey(), CmpQueryKeyName(), CmpSecurityMethod(), CmQueryKey(), CmQueryValueKey(), CmSaveKey(), CmSaveMergedKeys(), CmSetValueKey(), CmShutdownSystem(), CmUnloadKey(), NtFlushKey(), NtInitializeRegistry(), NtQueryOpenSubKeys(), and NtUnloadKey2().

CmShutdownSystem()

VOID NTAPI CmShutdownSystem

(

VOID

)

Definition at line 2146 of file cmsysini.c.

{
    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;
    }
 
    /*
     * As we flushed all the hives on the disk,
     * tell the system we do not want any further
     * registry flushing or syncing at this point
     * since we are shutting down the registry anyway.
     */
    HvShutdownComplete = TRUE;
 
    CmpUnlockRegistry();
}

Referenced by PopGracefulShutdown().

Variable Documentation

CmFirstTime

BOOLEAN CmFirstTime

extern

Definition at line 17 of file ntapi.c.

Referenced by CmShutdownSystem(), and NtInitializeRegistry().

CmiVolatileHive

PCMHIVE CmiVolatileHive

Definition at line 16 of file cmsysini.c.

Referenced by CmCheckRegistry(), CmFlushKey(), CmInitSystem1(), CmpCreateLinkNode(), CmpCreateRegistryRoot(), CmpGetHiveName(), CmpParseKey(), CmpUnlinkHiveFromMaster(), CmSaveKey(), and CmUnloadKey().

CmpFlushOnLockRelease

BOOLEAN CmpFlushOnLockRelease

Definition at line 25 of file cmsysini.c.

Referenced by CmpUnlockRegistry().

CmpFlushStarveWriters

LONG CmpFlushStarveWriters

extern

Definition at line 27 of file cmlazy.c.

Referenced by _Function_class_(), CmpLockRegistry(), and CmpLockRegistryExclusive().

CmpHiveListHead

LIST_ENTRY CmpHiveListHead

Definition at line 17 of file cmsysini.c.

Referenced by CmInitSystem1(), CmpDoFlushAll(), CmpDoFlushNextHive(), CmpInitializeHive(), and CmShutdownSystem().

CmpKeyObjectType

POBJECT_TYPE CmpKeyObjectType

Definition at line 15 of file cmsysini.c.

Referenced by CmGetSystemDriverList(), CmpCreateObjectTypes(), CmpCreateRegistryRoot(), and CmpLinkHiveToMaster().

CmpLoadWorkerEvent

KEVENT CmpLoadWorkerEvent

Definition at line 21 of file cmsysini.c.

Referenced by _Function_class_(), and CmpInitializeHiveList().

CmpLoadWorkerIncrement

LONG CmpLoadWorkerIncrement

Definition at line 22 of file cmsysini.c.

Referenced by _Function_class_(), and CmpInitializeHiveList().

CmpNoVolatileCreates

BOOLEAN CmpNoVolatileCreates

Definition at line 34 of file cmsysini.c.

Referenced by CmInitSystem1(), CmpInitializeHiveList(), and CmpParseKey().

CmpNoWrite

BOOLEAN CmpNoWrite = TRUE

Definition at line 30 of file cmsysini.c.

Referenced by CmFlushKey(), CmpCmdInit(), CmpDoFlushAll(), CmpDoFlushNextHive(), CmpFileFlush(), CmpFileWrite(), CmpInitializeHiveList(), and CmpLazyFlush().

CmpProfileLoaded

BOOLEAN CmpProfileLoaded

Definition at line 33 of file cmsysini.c.

Referenced by CmLoadKey().

CmpRegistryLock

ERESOURCE CmpRegistryLock

Definition at line 18 of file cmsysini.c.

Referenced by CmInitSystem1(), CmpLockRegistry(), CmpLockRegistryExclusive(), CmpTestRegistryLock(), CmpTestRegistryLockExclusive(), and CmpUnlockRegistry().

CmpRegistryLockCaller

PVOID CmpRegistryLockCaller

Definition at line 24 of file cmsysini.c.

Referenced by CmpLockRegistryExclusive().

CmpRegistryLockCallerCaller

PVOID CmpRegistryLockCallerCaller

Definition at line 24 of file cmsysini.c.

Referenced by CmpLockRegistryExclusive().

CmpSelfHealQueueListHead

LIST_ENTRY CmpSelfHealQueueListHead

Definition at line 20 of file cmsysini.c.

Referenced by CmInitSystem1().

CmpSelfHealQueueLock

KGUARDED_MUTEX CmpSelfHealQueueLock

Definition at line 19 of file cmsysini.c.

Referenced by CmInitSystem1().

CmpSpecialBootCondition

BOOLEAN CmpSpecialBootCondition

Definition at line 26 of file cmsysini.c.

Referenced by CmFlushKey(), and CmpInitializeHiveList().

CmpSystemProcess

PEPROCESS CmpSystemProcess

Definition at line 23 of file cmsysini.c.

Referenced by CmInitSystem1().

CmpTraceLevel

ULONG CmpTraceLevel = 0

Definition at line 35 of file cmsysini.c.

CmpWasSetupBoot

BOOLEAN CmpWasSetupBoot

Definition at line 32 of file cmsysini.c.

Referenced by CmLoadKey(), and CmpCmdInit().

HvShutdownComplete

BOOLEAN HvShutdownComplete = FALSE

Definition at line 36 of file cmsysini.c.

Referenced by CmpInitHiveFromFile(), and CmShutdownSystem().