/*
 * PROJECT: Alcyone System Kernel
 * LICENSE: BSD Clause 3
 * PURPOSE: Cache Controller:: Lazy Writer
 * NT KERNEL: 5.11.9360
 * COPYRIGHT:  2023-2029 Dibymartanda Samanta <>
 */ 

#include <ntoskrnl.h>
#define NTDEBUG
#include <debug.h>
#include "ccinternal.hpp"


extern "C"


/*Internal Function*/

BOOLEAN
NTAPI
CcPinFileData(
    _In_ PFILE_OBJECT FileObject,
    _In_ PLARGE_INTEGER FileOffset,
    _In_ ULONG Length,
    _In_ BOOLEAN IsNoWrite,
    _In_ BOOLEAN Flags,
    _In_ ULONG PinFlags,
    _Out_ PCC_BCB* Bcb,
    _Out_ PVOID* Buffer,
    _Out_ LARGE_INTEGER* BeyondLastByte)
{
     // Unimplemented
}

BOOLEAN 
NTAPI
CcMapDataCommon(
    _In_ PFILE_OBJECT FileObject,
    _In_ PLARGE_INTEGER FileOffset,
    _In_ ULONG Length,
    _In_ ULONG Flags,
    _Out_ PVOID *Bcb,
    _Out_ PVOID *Buffer
)
  {
  if (Flags & FILE_PIN_SEQUENTIAL_READ)
        InterlockedIncrement(&CcSequentialReadCount);
    else
        InterlockedIncrement(&CcRandomReadCount);

    KeGetCurrentThread()->WaitIrql = PASSIVE_LEVEL;

    if (Flags & FILE_PIN_SEQUENTIAL_READ)
    {
        *Buffer = CcGetVirtualAddress(SharedMap, *FileOffset, (PVACB *)&Bcb, &ReceivedLength);
        return TRUE;
    }
    else
    {
        LARGE_INTEGER BeyondLastByte;
        if (CcPinFileData(FileObject, FileOffset, Length, TRUE, 0, Flags, Bcb, Buffer, &BeyondLastByte))
        {
            return TRUE;
        }
        else
        {
            InterlockedIncrement(&CCFailedPinReadCount);
            return FALSE;
        }
    }

   }
}

VOID
NTAPI
CcUnpinFileDataEx(
    _In_ PCC_BCB Bcb,
    _In_ BOOLEAN WriteStatus,
    _In_ ULONG Type)
{
    // Unimplementd
}