VOID
GRAPHICS_BUFFER_Destroy(IN OUT PCONSOLE_SCREEN_BUFFER Buffer)
{
    PGRAPHICS_SCREEN_BUFFER Buff = (PGRAPHICS_SCREEN_BUFFER)Buffer;

    /*
     * IMPORTANT !! Reinitialize the type so that we don't enter a recursive
     * infinite loop when calling CONSOLE_SCREEN_BUFFER_Destroy.
     */
    Buffer->Header.Type = SCREEN_BUFFER;

    /*
     * Uninitialize the graphics screen buffer
     * in the reverse way we initialized it.
     */
    NtUnmapViewOfSection(Buff->ClientProcess, Buff->ClientBitMap);
    NtUnmapViewOfSection(NtCurrentProcess(), Buff->BitMap);
    NtClose(Buff->hSection);
    NtDuplicateObject(Buff->ClientProcess, Buff->ClientMutex,
                      NULL, NULL, 0, 0, DUPLICATE_CLOSE_SOURCE);
    NtClose(Buff->Mutex);
    ConsoleFreeHeap(Buff->BitMapInfo);

    CONSOLE_SCREEN_BUFFER_Destroy(Buffer);
}

/*
 * @implemented
 */
BOOL
NTAPI
UnmapViewOfFile(LPCVOID lpBaseAddress)
{
    NTSTATUS Status;

    /* Unmap the section */
    Status = NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)lpBaseAddress);
    if (!NT_SUCCESS(Status))
    {
        /* Check if the pages were protected */
        if (Status == STATUS_INVALID_PAGE_PROTECTION)
        {
            /* Flush the region if it was a "secure memory cache" */
            if (RtlFlushSecureMemoryCache((PVOID)lpBaseAddress, 0))
            {
                /* Now try to unmap again */
                Status = NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)lpBaseAddress);
                if (NT_SUCCESS(Status)) return TRUE;
            }
        }

        /* We failed */
        BaseSetLastNTError(Status);
        return FALSE;
    }

    /* Otherwise, return sucess */
    return TRUE;
}

VOID WepCloseServerObjects(
    VOID
    )
{
    if (WeServerSharedSection)
    {
        NtClose(WeServerSharedSection);
        WeServerSharedSection = NULL;
    }

    if (WeServerSharedData)
    {
        NtUnmapViewOfSection(NtCurrentProcess(), WeServerSharedData);
        WeServerSharedData = NULL;
    }

    if (WeServerSharedSectionLock)
    {
        NtClose(WeServerSharedSectionLock);
        WeServerSharedSectionLock = NULL;
    }

    if (WeServerSharedSectionEvent)
    {
        NtClose(WeServerSharedSectionEvent);
        WeServerSharedSectionEvent = NULL;
    }
}

/*
 * @implemented
 */
BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
{
    NTSTATUS Status;
    PIMAGE_NT_HEADERS NtHeaders;

    if (LDR_IS_DATAFILE(hLibModule))
    {
        // FIXME: This SEH should go inside RtlImageNtHeader instead
        _SEH2_TRY
        {
            /* This is a LOAD_LIBRARY_AS_DATAFILE module, check if it's a valid one */
            NtHeaders = RtlImageNtHeader((PVOID)((ULONG_PTR)hLibModule & ~1));
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            NtHeaders = NULL;
        } _SEH2_END

        if (NtHeaders)
        {
            /* Unmap view */
            Status = NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)((ULONG_PTR)hLibModule & ~1));

            /* Unload alternate resource module */
            LdrUnloadAlternateResourceModule(hLibModule);
        }
        else
            Status = STATUS_INVALID_IMAGE_FORMAT;
    }
    else
    {

NTSTATUS PhLoadMappedImage(
    _In_opt_ PWSTR FileName,
    _In_opt_ HANDLE FileHandle,
    _In_ BOOLEAN ReadOnly,
    _Out_ PPH_MAPPED_IMAGE MappedImage
    )
{
    NTSTATUS status;

    status = PhMapViewOfEntireFile(
        FileName,
        FileHandle,
        ReadOnly,
        &MappedImage->ViewBase,
        &MappedImage->Size
        );

    if (NT_SUCCESS(status))
    {
        status = PhInitializeMappedImage(
            MappedImage,
            MappedImage->ViewBase,
            MappedImage->Size
            );

        if (!NT_SUCCESS(status))
        {
            NtUnmapViewOfSection(NtCurrentProcess(), MappedImage->ViewBase);
        }
    }

    return status;
}

static int OnUnmapViewClick(HWND hDlg)
{
    TFileTestData * pData = GetDialogData(hDlg);
    NTSTATUS Status;

    // Get the base address where it is mapped
    if(SaveDialog2(hDlg) == ERROR_SUCCESS)
    {
        // Unmap the view from the base address
        Status = NtUnmapViewOfSection(NtCurrentProcess(), pData->pvSectionMappedView);

        // Clear the base address, so the next click on "MapView" will succeed
        Hex2DlgTextPtr(hDlg, IDC_BASE_ADDRESS, NULL);
        pData->pvSectionMappedView = NULL;

        // Clear the view size, so the next click on "MapView" will succeed
        Hex2DlgTextPtr(hDlg, IDC_VIEW_SIZE, 0);
        pData->cbSectViewSize = 0;

        // Show the result
        SetResultInfo(hDlg, Status, pData->hSection);
        UpdateDialog(hDlg, pData);
    }
    return TRUE;
}

NTSTATUS PhUnloadMappedImage(
    _Inout_ PPH_MAPPED_IMAGE MappedImage
    )
{
    return NtUnmapViewOfSection(
        NtCurrentProcess(),
        MappedImage->ViewBase
        );
}

NTSTATUS PhUnloadMappedArchive(
    _Inout_ PPH_MAPPED_ARCHIVE MappedArchive
    )
{
    return NtUnmapViewOfSection(
        NtCurrentProcess(),
        MappedArchive->ViewBase
        );
}

// UnmapPhysicalMemory
// Maps a view of a section.
//
VOID UnmapPhysicalMemory( DWORD Address )
{
	NTSTATUS		status;

	status = NtUnmapViewOfSection( (HANDLE) -1, (PVOID) Address );
	if( !NT_SUCCESS(status)) {

//		PrintError("Unable to unmap view", status );
	}
}

/***********************************************************************
 *           exit_thread
 */
void exit_thread( int status )
{
    static void *prev_teb;
    shmlocal_t *shmlocal;
    sigset_t sigset;
    TEB *teb;

    if (status)  /* send the exit code to the server (0 is already the default) */
    {
        SERVER_START_REQ( terminate_thread )
        {
            req->handle    = wine_server_obj_handle( GetCurrentThread() );
            req->exit_code = status;
            wine_server_call( req );
        }
        SERVER_END_REQ;
    }

    if (interlocked_xchg_add( &nb_threads, 0 ) <= 1)
    {
        LdrShutdownProcess();
        exit( status );
    }

    LdrShutdownThread();
    RtlFreeThreadActivationContextStack();

    shmlocal = interlocked_xchg_ptr( &NtCurrentTeb()->Reserved5[2], NULL );
    if (shmlocal) NtUnmapViewOfSection( NtCurrentProcess(), shmlocal );

    pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );

    if ((teb = interlocked_xchg_ptr( &prev_teb, NtCurrentTeb() )))
    {
        struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SpareBytes1;

        if (thread_data->pthread_id)
        {
            pthread_join( thread_data->pthread_id, NULL );
            signal_free_thread( teb );
        }
    }

    sigemptyset( &sigset );
    sigaddset( &sigset, SIGQUIT );
    pthread_sigmask( SIG_BLOCK, &sigset, NULL );
    if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );

    close( ntdll_get_thread_data()->wait_fd[0] );
    close( ntdll_get_thread_data()->wait_fd[1] );
    close( ntdll_get_thread_data()->reply_fd );
    close( ntdll_get_thread_data()->request_fd );
    pthread_exit( UIntToPtr(status) );
}

static void devmem_unmap(DWORD addr)
{
	NTSTATUS	r;

	r = NtUnmapViewOfSection((HANDLE) -1, (PVOID)addr);

	if(!NT_SUCCESS(r))
	{
		logerr(0, "NtUnmapViewOfSection failed");
		errno = unix_err(RtlNtStatusToDosError(r));
	}
}

/*
 * FUNCTION: Closes the current cabinet
 * RETURNS:
 *     Status of operation
 */
static ULONG
CloseCabinet(VOID)
{
    if (FileBuffer)
    {
        NtUnmapViewOfSection(NtCurrentProcess(), FileBuffer);
        NtClose(FileSectionHandle);
        NtClose(FileHandle);
        FileBuffer = NULL;
    }

    return 0;
}

/*
 * @implemented
 */
BOOL
WINAPI
Process32FirstW(HANDLE hSnapshot, LPPROCESSENTRY32W lppe)
{
  PTH32SNAPSHOT Snapshot;
  LARGE_INTEGER SOffset;
  SIZE_T ViewSize;
  NTSTATUS Status;

  CHECK_PARAM_SIZE(lppe, sizeof(PROCESSENTRY32W));

  SOffset.QuadPart = 0;
  ViewSize = 0;
  Snapshot = NULL;

  Status = NtMapViewOfSection(hSnapshot,
                              NtCurrentProcess(),
                              (PVOID*)&Snapshot,
                              0,
                              0,
                              &SOffset,
                              &ViewSize,
                              ViewShare,
                              0,
                              PAGE_READWRITE);
  if(NT_SUCCESS(Status))
  {
    BOOL Ret;

    if(Snapshot->ProcessListCount > 0)
    {
      LPPROCESSENTRY32W Entries = (LPPROCESSENTRY32W)OffsetToPtr(Snapshot, Snapshot->ProcessListOffset);

      Snapshot->ProcessListIndex = 1;
      RtlCopyMemory(lppe, &Entries[0], sizeof(PROCESSENTRY32W));
      Ret = TRUE;
    }
    else
    {

      SetLastError(ERROR_NO_MORE_FILES);
      Ret = FALSE;
    }

    NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)Snapshot);
    return Ret;
  }

  BaseSetLastNTError(Status);
  return FALSE;
}

/*
 * @implemented
 */
BOOL
WINAPI
Heap32ListNext(HANDLE hSnapshot, LPHEAPLIST32 lphl)
{
  PTH32SNAPSHOT Snapshot;
  LARGE_INTEGER SOffset;
  SIZE_T ViewSize;
  NTSTATUS Status;

  CHECK_PARAM_SIZE(lphl, sizeof(HEAPLIST32));

  SOffset.QuadPart = 0;
  ViewSize = 0;
  Snapshot = NULL;

  Status = NtMapViewOfSection(hSnapshot,
                              NtCurrentProcess(),
                              (PVOID*)&Snapshot,
                              0,
                              0,
                              &SOffset,
                              &ViewSize,
                              ViewShare,
                              0,
                              PAGE_READWRITE);
  if(NT_SUCCESS(Status))
  {
    BOOL Ret;

    if(Snapshot->HeapListCount > 0 &&
       Snapshot->HeapListIndex < Snapshot->HeapListCount)
    {
      LPHEAPLIST32 Entries = (LPHEAPLIST32)OffsetToPtr(Snapshot, Snapshot->HeapListOffset);
      RtlCopyMemory(lphl, &Entries[Snapshot->HeapListIndex++], sizeof(HEAPLIST32));
      Ret = TRUE;
    }
    else
    {
      SetLastError(ERROR_NO_MORE_FILES);
      Ret = FALSE;
    }

    NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)Snapshot);
    return Ret;
  }

  BaseSetLastNTError(Status);
  return FALSE;
}

/*
 * @implemented
 */
BOOL
NTAPI
UnmapViewOfFile(LPCVOID lpBaseAddress)
{
    NTSTATUS Status;

    /* Unmap the section */
    Status = NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)lpBaseAddress);
    if (!NT_SUCCESS(Status))
    {
        /* We failed */
        BaseSetLastNTError(Status);
        return FALSE;
    }

    /* Otherwise, return sucess */
    return TRUE;
}

/***********************************************************************
 *             UnmapViewOfFile   ([email protected])
 *
 * Unmaps a mapped view of a file.
 *
 * PARAMS
 *  addr [I] Address where mapped view begins.
 *
 * RETURNS
 *	Success: TRUE.
 *	Failure: FALSE.
 *
 */
BOOL WINAPI UnmapViewOfFile( LPCVOID addr )
{
    NTSTATUS status;

    if (GetVersion() & 0x80000000)
    {
        MEMORY_BASIC_INFORMATION info;
        if (!VirtualQuery( addr, &info, sizeof(info) ) || info.AllocationBase != addr)
        {
            SetLastError( ERROR_INVALID_ADDRESS );
            return FALSE;
        }
    }

    status = NtUnmapViewOfSection( GetCurrentProcess(), (void *)addr );
    if (status) SetLastError( RtlNtStatusToDosError(status) );
    return !status;
}

BOOL
APIENTRY
UnmapViewOfFile(
    LPCVOID lpBaseAddress
    )

/*++

Routine Description:

    A previously mapped view of a file may be unmapped from the callers
    address space using UnmapViewOfFile.

Arguments:

    lpBaseAddress - Supplies the base address of a previously mapped
        view of a file that is to be unmapped.  This value must be
        identical to the value returned by a previous call to
        MapViewOfFile.

Return Value:

    TRUE - The operation was successful.  All dirty pages within the
        specified range are stored in the on-disk representation of the
        mapped file.

    FALSE - The operation failed. Extended error status is available
        using GetLastError.

--*/

{
    NTSTATUS Status;

    Status = NtUnmapViewOfSection(NtCurrentProcess(),(PVOID)lpBaseAddress);

    if ( !NT_SUCCESS(Status) ) {
        BaseSetLastNTError(Status);
        return FALSE;
        }

    return TRUE;
}

VOID PhShowMemoryEditorDialog(
    _In_ HANDLE ProcessId,
    _In_ PVOID BaseAddress,
    _In_ SIZE_T RegionSize,
    _In_ ULONG SelectOffset,
    _In_ ULONG SelectLength,
    _In_opt_ PPH_STRING Title,
    _In_ ULONG Flags
    )
{
    PMEMORY_EDITOR_CONTEXT context;
    MEMORY_EDITOR_CONTEXT lookupContext;
    PPH_AVL_LINKS links;

    lookupContext.ProcessId = ProcessId;
    lookupContext.BaseAddress = BaseAddress;
    lookupContext.RegionSize = RegionSize;

    links = PhFindElementAvlTree(&PhMemoryEditorSet, &lookupContext.Links);

    if (!links)
    {
        context = PhAllocate(sizeof(MEMORY_EDITOR_CONTEXT));
        memset(context, 0, sizeof(MEMORY_EDITOR_CONTEXT));

        context->ProcessId = ProcessId;
        context->BaseAddress = BaseAddress;
        context->RegionSize = RegionSize;
        context->SelectOffset = SelectOffset;
        PhSwapReference(&context->Title, Title);
        context->Flags = Flags;

        context->WindowHandle = CreateDialogParam(
            PhInstanceHandle,
            MAKEINTRESOURCE(IDD_MEMEDIT),
            NULL,
            PhpMemoryEditorDlgProc,
            (LPARAM)context
            );

        if (!context->LoadCompleted)
        {
            DestroyWindow(context->WindowHandle);
            return;
        }

        if (SelectOffset != -1)
            PostMessage(context->WindowHandle, WM_PH_SELECT_OFFSET, SelectOffset, SelectLength);

        PhRegisterDialog(context->WindowHandle);
        PhAddElementAvlTree(&PhMemoryEditorSet, &context->Links);

        ShowWindow(context->WindowHandle, SW_SHOW);
    }
    else
    {
        context = CONTAINING_RECORD(links, MEMORY_EDITOR_CONTEXT, Links);

        if (IsIconic(context->WindowHandle))
            ShowWindow(context->WindowHandle, SW_RESTORE);
        else
            SetForegroundWindow(context->WindowHandle);

        if (SelectOffset != -1)
            PostMessage(context->WindowHandle, WM_PH_SELECT_OFFSET, SelectOffset, SelectLength);

        // Just in case.
        if ((Flags & PH_MEMORY_EDITOR_UNMAP_VIEW_OF_SECTION) && ProcessId == NtCurrentProcessId())
            NtUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
    }
}

//.........这里部分代码省略.........
    }

    /* find the starting block of the file
       start with the first data block of the folder */
    CFData = (PCFDATA)(CabinetFolders[Search->File->FolderIndex].DataOffset + FileBuffer);
    CurrentOffset = 0;
    while (CurrentOffset + CFData->UncompSize <= Search->File->FileOffset)
    {
        /* walk the data blocks until we reach
           the one containing the start of the file */
        CurrentOffset += CFData->UncompSize;
        CFData = (PCFDATA)((char *)(CFData + 1) + DataReserved + CFData->CompSize);
    }

    /* now decompress and discard any data in
       the block before the start of the file */

    /* start of comp data */
    CurrentBuffer = ((unsigned char *)(CFData + 1)) + DataReserved;
    RemainingBlock = CFData->CompSize;
    InputLength = RemainingBlock;

    while (CurrentOffset < Search->File->FileOffset)
    {
        /* compute remaining uncomp bytes to start
           of file, bounded by sizeof junk */
        OutputLength = Search->File->FileOffset - CurrentOffset;
        if (OutputLength > (LONG)sizeof(Junk))
            OutputLength = sizeof (Junk);

        /* negate to signal NOT end of block */
        OutputLength = -OutputLength;
        CodecUncompress(Junk, CurrentBuffer, &InputLength, &OutputLength);
        /* add the uncomp bytes extracted to current folder offset */
        CurrentOffset += OutputLength;
        /* add comp bytes consumed to CurrentBuffer */
        CurrentBuffer += InputLength;
        /* subtract bytes consumed from bytes remaining in block */
        RemainingBlock -= InputLength;
        /* neg for resume decompression of the same block */
        InputLength = -RemainingBlock;
    }

    /* now CurrentBuffer points to the first comp byte
       of the file, so we can begin decompressing */

    /* Size = remaining uncomp bytes of the file to decompress */
    Size = Search->File->FileSize;
    while (Size > 0)
    {
        OutputLength = Size;
        DPRINT("Decompressing block at %x with RemainingBlock = %d, Size = %d\n",
               CurrentBuffer, RemainingBlock, Size);

        Status = CodecUncompress(CurrentDestBuffer,
                                 CurrentBuffer,
                                 &InputLength,
                                 &OutputLength);

        if (Status != CS_SUCCESS)
        {
            DPRINT("Cannot uncompress block\n");
            if (Status == CS_NOMEMORY)
                Status = CAB_STATUS_NOMEMORY;
            Status = CAB_STATUS_INVALID_CAB;
            goto UnmapDestFile;
        }

        /* advance dest buffer by bytes produced */
        CurrentDestBuffer = (PVOID)((ULONG_PTR)CurrentDestBuffer + OutputLength);
        /* advance src buffer by bytes consumed */
        CurrentBuffer += InputLength;
        /* reduce remaining file bytes by bytes produced */
        Size -= OutputLength;
        /* reduce remaining block size by bytes consumed */
        RemainingBlock -= InputLength;
        if (RemainingBlock == 0)
        {
            /* used up this block, move on to the next */
            DPRINT("Out of block data\n");
            CFData = (PCFDATA)CurrentBuffer;
            RemainingBlock = CFData->CompSize;
            CurrentBuffer = (unsigned char *)(CFData + 1) + DataReserved;
            InputLength = RemainingBlock;
        }
    }

    Status = CAB_STATUS_SUCCESS;

UnmapDestFile:
    NtUnmapViewOfSection(NtCurrentProcess(), DestFileBuffer);

CloseDestFileSection:
    NtClose(DestFileSection);

CloseDestFile:
    NtClose(DestFile);

    return Status;
}

//.........这里部分代码省略.........
    Status = NtMapViewOfSection(SourceFileSection,
                                NtCurrentProcess(),
                                &SourceFileMap,
                                0,
                                0,
                                NULL,
                                &SourceSectionSize,
                                ViewUnmap,
                                0,
                                PAGE_READONLY );
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtMapViewOfSection failed: %x, %S\n", Status, SourceFileName);
        goto closesrcsec;
    }

    RtlInitUnicodeString(&FileName,
                         DestinationFileName);

    InitializeObjectAttributes(&ObjectAttributes,
                               &FileName,
                               OBJ_CASE_INSENSITIVE,
                               NULL,
                               NULL);

    Status = NtCreateFile(&FileHandleDest,
                          GENERIC_WRITE | SYNCHRONIZE,
                          &ObjectAttributes,
                          &IoStatusBlock,
                          NULL,
                          FILE_ATTRIBUTE_NORMAL,
                          0,
                          FILE_OVERWRITE_IF,
                          FILE_NO_INTERMEDIATE_BUFFERING |
                          FILE_SEQUENTIAL_ONLY |
                          FILE_SYNCHRONOUS_IO_NONALERT,
                          NULL,
                          0);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtCreateFile failed: %x\n", Status);
        goto unmapsrcsec;
    }

    RegionSize = (ULONG)PAGE_ROUND_UP(FileStandard.EndOfFile.u.LowPart);
    IoStatusBlock.Status = 0;
    ByteOffset.QuadPart = 0;
    Status = NtWriteFile(FileHandleDest,
                         NULL,
                         NULL,
                         NULL,
                         &IoStatusBlock,
                         SourceFileMap,
                         RegionSize,
                         &ByteOffset,
                         NULL);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtWriteFile failed: %x:%x, iosb: %p src: %p, size: %x\n", Status, IoStatusBlock.Status, &IoStatusBlock, SourceFileMap, RegionSize);
        goto closedest;
    }

    /* Copy file date/time from source file */
    Status = NtSetInformationFile(FileHandleDest,
                                  &IoStatusBlock,
                                  &FileBasic,
                                  sizeof(FILE_BASIC_INFORMATION),
                                  FileBasicInformation);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtSetInformationFile failed: %x\n", Status);
        goto closedest;
    }

    /* shorten the file back to it's real size after completing the write */
    Status = NtSetInformationFile(FileHandleDest,
                                  &IoStatusBlock,
                                  &FileStandard.EndOfFile,
                                  sizeof(FILE_END_OF_FILE_INFORMATION),
                                  FileEndOfFileInformation);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("NtSetInformationFile failed: %x\n", Status);
    }

closedest:
    NtClose(FileHandleDest);

unmapsrcsec:
    NtUnmapViewOfSection(NtCurrentProcess(), SourceFileMap);

closesrcsec:
    NtClose(SourceFileSection);

closesrc:
    NtClose(FileHandleSource);

done:
    return Status;
}