_global.cpp

#include "_global.h"

void* RtlAllocateMemory(bool InZeroMemory, SIZE_T InSize)
{
    void* Result = ExAllocatePoolWithTag(NonPagedPool, InSize, 'HIDE');
    if(InZeroMemory && (Result != NULL))
        RtlZeroMemory(Result, InSize);
    return Result;
}

void RtlFreeMemory(void* InPointer)
{
    ExFreePool(InPointer);
}

//Based on: http://leguanyuan.blogspot.nl/2013/09/x64-inline-hook-zwcreatesection.html
NTSTATUS RtlSuperCopyMemory(IN VOID UNALIGNED* Destination, IN CONST VOID UNALIGNED* Source, IN ULONG Length)
{
    //Change memory properties.
    PMDL g_pmdl = IoAllocateMdl(Destination, Length, 0, 0, NULL);
    if(!g_pmdl)
        return STATUS_UNSUCCESSFUL;
    MmBuildMdlForNonPagedPool(g_pmdl);
    unsigned int* Mapped = (unsigned int*)MmMapLockedPages(g_pmdl, KernelMode);
    if(!Mapped)
    {
        IoFreeMdl(g_pmdl);
        return STATUS_UNSUCCESSFUL;
    }
    KIRQL kirql = KeRaiseIrqlToDpcLevel();
    RtlCopyMemory(Mapped, Source, Length);
    KeLowerIrql(kirql);
    //Restore memory properties.
    MmUnmapLockedPages((PVOID)Mapped, g_pmdl);
    IoFreeMdl(g_pmdl);
    return STATUS_SUCCESS;
}