123 lines
3 KiB
C++
123 lines
3 KiB
C++
// Copyright (c) 1998 Microsoft Corporation
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//
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// KernHelp.cpp
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//
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// Wrappers for kernel functions to make synth core cross compilable
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//
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extern "C" {
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#include <ntddk.h>
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};
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#include "KernHelp.h"
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VOID InitializeCriticalSection(
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LPCRITICAL_SECTION CritSect)
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{
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KeInitializeMutex((PKMUTEX)CritSect, 1);
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}
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VOID EnterCriticalSection(
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LPCRITICAL_SECTION CritSect)
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{
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KeWaitForSingleObject((PKMUTEX)CritSect,
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Executive,
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KernelMode,
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FALSE,
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0);
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}
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VOID LeaveCriticalSection(
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LPCRITICAL_SECTION CritSect)
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{
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KeReleaseMutex((PKMUTEX)CritSect, FALSE);
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}
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VOID DeleteCriticalSection(
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LPCRITICAL_SECTION CritSect)
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{
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// NOP in kernel
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//
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}
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// GetRegValueDword
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//
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// Must be called at passive level
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//
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int GetRegValueDword(
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LPTSTR RegPath,
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LPTSTR ValueName,
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PULONG Value)
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{
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int ReturnValue = 0;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle;
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KEY_VALUE_PARTIAL_INFORMATION *Information;
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ULONG InformationSize;
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UNICODE_STRING UnicodeRegPath;
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UNICODE_STRING UnicodeValueName;
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RtlInitUnicodeString(&UnicodeRegPath, RegPath);
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RtlInitUnicodeString(&UnicodeValueName, ValueName);
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InitializeObjectAttributes(&ObjectAttributes,
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&UnicodeRegPath,
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0, // Flags
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NULL, // Root directory
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NULL); // Security descriptor
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Status = ZwOpenKey(&KeyHandle,
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KEY_QUERY_VALUE,
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&ObjectAttributes);
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if (Status != STATUS_SUCCESS)
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{
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return 0;
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}
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InformationSize = sizeof(Information) + sizeof(ULONG);
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Information = (KEY_VALUE_PARTIAL_INFORMATION*)ExAllocatePool(PagedPool, InformationSize);
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if (Information == NULL)
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{
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return 0;
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}
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Status = ZwQueryValueKey(KeyHandle,
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&UnicodeValueName,
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KeyValuePartialInformation,
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Information,
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sizeof(Information),
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&InformationSize);
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if (Status == STATUS_SUCCESS)
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{
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if (Information->Type == REG_DWORD && Information->DataLength == sizeof(ULONG))
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{
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RtlCopyMemory(Value, Information->Data, sizeof(ULONG));
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ReturnValue = 1;
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}
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}
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ExFreePool(Information);
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ZwClose(KeyHandle);
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return ReturnValue;
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}
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ULONG GetTheCurrentTime()
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{
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LARGE_INTEGER Time;
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KeQuerySystemTime(&Time);
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return (ULONG)(Time.QuadPart / (10 * 1000));
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}
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void DebugInit(void)
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{
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}
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void DebugTrace(int iDebugLevel, LPSTR pstrFormat, ...)
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{
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}
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