[ros-diffs] [hbelusca] 57819: [CONSRV] - Delete all the remnants of Win32CsrValidateBuffer calls, which were replaced by standard CsrValidateMessageBuffer calls, and therefore delete the unused server.c file. ...

Author: hbelusca
Date: Sat Dec  8 16:13:16 2012
New Revision: 57819

URL: http://svn.reactos.org/svn/reactos?rev=57819&view=rev
Log:
[CONSRV]
- Delete all the remnants of Win32CsrValidateBuffer calls, which were replaced by standard
CsrValidateMessageBuffer calls, and therefore delete the unused server.c file.
- Adapt WriteConsole API to use CSR waits. This replaces the old event-based waiting.

TODO: Dereference all the waits in Console->WriteWaitQueue.

Removed:
    branches/ros-csrss/win32ss/user/consrv/server.c
Modified:
    branches/ros-csrss/include/reactos/subsys/win/conmsg.h
    branches/ros-csrss/win32ss/user/consrv/CMakeLists.txt
    branches/ros-csrss/win32ss/user/consrv/alias.c
    branches/ros-csrss/win32ss/user/consrv/conio.h
    branches/ros-csrss/win32ss/user/consrv/conoutput.c
    branches/ros-csrss/win32ss/user/consrv/console.c
    branches/ros-csrss/win32ss/user/consrv/consrv.h
    branches/ros-csrss/win32ss/user/consrv/lineinput.c

Modified: branches/ros-csrss/include/reactos/subsys/win/conmsg.h
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/include/reactos/subsy…
==============================================================================
--- branches/ros-csrss/include/reactos/subsys/win/conmsg.h [iso-8859-1] (original)
+++ branches/ros-csrss/include/reactos/subsys/win/conmsg.h [iso-8859-1] Sat Dec  8
16:13:16 2012
@@ -135,7 +135,6 @@
     BOOL Unicode;
     ULONG NrCharactersToWrite;
     ULONG NrCharactersWritten;
-    // HANDLE UnpauseEvent;
 
     ULONG BufferSize;
     PVOID Buffer;

Modified: branches/ros-csrss/win32ss/user/consrv/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/C…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/CMakeLists.txt [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/CMakeLists.txt [iso-8859-1] Sat Dec  8 16:13:16
2012
@@ -15,7 +15,6 @@
     handle.c
     init.c
     lineinput.c
-    server.c
     tuiconsole.c
     consrv.rc
     ${CMAKE_CURRENT_BINARY_DIR}/consrv.def)

Modified: branches/ros-csrss/win32ss/user/consrv/alias.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/a…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/alias.c [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/alias.c [iso-8859-1] Sat Dec  8 16:13:16 2012
@@ -438,15 +438,6 @@
         return STATUS_BUFFER_TOO_SMALL;
     }
 
-/*
-    if (!Win32CsrValidateBuffer(CsrGetClientThread()->Process, lpTarget,
-                                ConsoleAlias->TargetLength, 1))
-    {
-        ConioUnlockConsole(Console);
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
-
     wcscpy(lpTarget, Entry->lpTarget);
     ConsoleAlias->TargetLength = Length;
     ConioUnlockConsole(Console);
@@ -496,17 +487,6 @@
         return STATUS_BUFFER_OVERFLOW;
     }
 
-/*
-    if (!Win32CsrValidateBuffer(CsrGetClientThread()->Process,
-                                GetAllConsoleAliases->AliasesBuffer,
-                                GetAllConsoleAliases->AliasesBufferLength,
-                                1))
-    {
-        ConioUnlockConsole(Console);
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
-
     BytesWritten = IntGetAllConsoleAliases(Header,
                                            GetAllConsoleAliases->AliasesBuffer,
                                           
GetAllConsoleAliases->AliasesBufferLength);
@@ -592,17 +572,6 @@
         return STATUS_INVALID_PARAMETER;
     }
 
-/*
-    if (!Win32CsrValidateBuffer(CsrGetClientThread()->Process,
-                                GetConsoleAliasesExes->ExeNames,
-                                GetConsoleAliasesExes->Length,
-                                1))
-    {
-        ConioUnlockConsole(Console);
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
-
     BytesWritten = IntGetConsoleAliasesExes(Console->Aliases,
                                             GetConsoleAliasesExes->ExeNames,
                                             GetConsoleAliasesExes->Length);

Modified: branches/ros-csrss/win32ss/user/consrv/conio.h
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/c…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/conio.h [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/conio.h [iso-8859-1] Sat Dec  8 16:13:16 2012
@@ -52,8 +52,8 @@
     LONG ReferenceCount;
     CRITICAL_SECTION Lock;
     struct tagCSRSS_CONSOLE *Prev, *Next; /* Next and Prev consoles in console wheel */
-    HANDLE ActiveEvent;
 
+    HANDLE ActiveEvent;                   /* Event set when an input event is added in
its queue */
     LIST_ENTRY ReadWaitQueue;             /* List head for the queue of read wait blocks
*/
 
     LIST_ENTRY InputEvents;               /* List head for input event queue */
@@ -83,8 +83,10 @@
     LIST_ENTRY ProcessList;
     struct tagALIAS_HEADER *Aliases;
     CONSOLE_SELECTION_INFO Selection;
+
     BYTE PauseFlags;
     HANDLE UnpauseEvent;
+    LIST_ENTRY WriteWaitQueue;            /* List head for the queue of write wait blocks
*/
 } CSRSS_CONSOLE, *PCSRSS_CONSOLE;
 
 typedef struct tagCSRSS_CONSOLE_VTBL

Modified: branches/ros-csrss/win32ss/user/consrv/conoutput.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/c…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/conoutput.c [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/conoutput.c [iso-8859-1] Sat Dec  8 16:13:16
2012
@@ -131,22 +131,6 @@
 
     for (i = 0; i < Length; i++)
     {
-        if (Console->UnpauseEvent)
-        {
-/** FIXME: Added in 47359 for pausing
-            Status = NtDuplicateObject(NtCurrentProcess(),
-                                       Console->UnpauseEvent,
-                                       Process->ProcessHandle,
-                                       &WriteConsoleRequest->UnpauseEvent,
-                                       SYNCHRONIZE, 0, 0);
-            ConioUnlockScreenBuffer(Buff);
-            return (NT_SUCCESS(Status) ? STATUS_PENDING : Status);
-**/
-
-            /* Wait on the console unpause event till it becomes signaled */
-            WaitForSingleObject(Console->UnpauseEvent, INFINITE);
-        }
-
         if (Buff->Mode & ENABLE_PROCESSED_OUTPUT)
         {
             /* --- LF --- */
@@ -446,6 +430,122 @@
     return Size;
 }
 
+static NTSTATUS
+DoWriteConsole(IN PCSR_API_MESSAGE ApiMessage,
+               IN PCSR_THREAD ClientThread,
+               IN BOOL CreateWaitBlock OPTIONAL);
+
+// Wait function CSR_WAIT_FUNCTION
+static BOOLEAN
+WriteConsoleThread(IN PLIST_ENTRY WaitList,
+                   IN PCSR_THREAD WaitThread,
+                   IN PCSR_API_MESSAGE WaitApiMessage,
+                   IN PVOID WaitContext,
+                   IN PVOID WaitArgument1,
+                   IN PVOID WaitArgument2,
+                   IN ULONG WaitFlags)
+{
+    NTSTATUS Status;
+
+    Status = DoWriteConsole(WaitApiMessage,
+                            WaitThread,
+                            FALSE);
+
+    if (Status != STATUS_PENDING)
+    {
+        WaitApiMessage->Status = Status;
+    }
+
+    return (Status == STATUS_PENDING ? FALSE : TRUE);
+}
+
+static NTSTATUS
+DoWriteConsole(IN PCSR_API_MESSAGE ApiMessage,
+               IN PCSR_THREAD ClientThread,
+               IN BOOL CreateWaitBlock OPTIONAL)
+{
+    NTSTATUS Status = STATUS_SUCCESS;
+    PCSRSS_WRITE_CONSOLE WriteConsoleRequest =
&((PCONSOLE_API_MESSAGE)ApiMessage)->Data.WriteConsoleRequest;
+    PCSRSS_CONSOLE Console;
+    PCSRSS_SCREEN_BUFFER Buff;
+    PCHAR Buffer;
+    DWORD Written = 0;
+    ULONG Length;
+
+    Status = ConioLockScreenBuffer(ConsoleGetPerProcessData(ClientThread->Process),
WriteConsoleRequest->ConsoleHandle, &Buff, GENERIC_WRITE);
+    if (!NT_SUCCESS(Status)) return Status;
+
+    Console = Buff->Header.Console;
+
+    // if (Console->PauseFlags & (PAUSED_FROM_KEYBOARD | PAUSED_FROM_SCROLLBAR |
PAUSED_FROM_SELECTION))
+    if (Console->PauseFlags && Console->UnpauseEvent != NULL)
+    {
+        if (CreateWaitBlock)
+        {
+            if (!CsrCreateWait(&Console->WriteWaitQueue,
+                               WriteConsoleThread,
+                               ClientThread,
+                               ApiMessage,
+                               NULL,
+                               NULL))
+            {
+                ConioUnlockScreenBuffer(Buff);
+                return STATUS_NO_MEMORY;
+            }
+        }
+
+        /* Wait until we un-pause the console */
+        ConioUnlockScreenBuffer(Buff);
+        return STATUS_PENDING;
+    }
+
+    if(WriteConsoleRequest->Unicode)
+    {
+        Length = WideCharToMultiByte(Console->OutputCodePage, 0,
+                                     (PWCHAR)WriteConsoleRequest->Buffer,
+                                     WriteConsoleRequest->NrCharactersToWrite,
+                                     NULL, 0, NULL, NULL);
+        Buffer = RtlAllocateHeap(GetProcessHeap(), 0, Length);
+        if (Buffer)
+        {
+            WideCharToMultiByte(Console->OutputCodePage, 0,
+                                (PWCHAR)WriteConsoleRequest->Buffer,
+                                WriteConsoleRequest->NrCharactersToWrite,
+                                Buffer, Length, NULL, NULL);
+        }
+        else
+        {
+            Status = STATUS_NO_MEMORY;
+        }
+    }
+    else
+    {
+        Buffer = (PCHAR)WriteConsoleRequest->Buffer;
+    }
+
+    if (Buffer)
+    {
+        if (NT_SUCCESS(Status))
+        {
+            Status = ConioWriteConsole(Console, Buff, Buffer,
+                                       WriteConsoleRequest->NrCharactersToWrite,
TRUE);
+            if (NT_SUCCESS(Status))
+            {
+                Written = WriteConsoleRequest->NrCharactersToWrite;
+            }
+        }
+        if (WriteConsoleRequest->Unicode)
+        {
+            RtlFreeHeap(GetProcessHeap(), 0, Buffer);
+        }
+    }
+
+    WriteConsoleRequest->NrCharactersWritten = Written;
+
+    ConioUnlockScreenBuffer(Buff);
+    return Status;
+}
+
 
 /* PUBLIC APIS ****************************************************************/
 
@@ -485,15 +585,6 @@
     Status = ConioLockScreenBuffer(ProcessData,
ReadConsoleOutputRequest->ConsoleHandle, &Buff, GENERIC_READ);
     if (!NT_SUCCESS(Status)) return Status;
 
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process, CharInfo,
-                                BufferSize.X * BufferSize.Y, sizeof(CHAR_INFO)))
-    {
-        ConioUnlockScreenBuffer(Buff);
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
-
     /* FIXME: Is this correct? */
     CodePage = ProcessData->Console->OutputCodePage;
 
@@ -546,13 +637,6 @@
 {
     NTSTATUS Status;
     PCSRSS_WRITE_CONSOLE WriteConsoleRequest =
&((PCONSOLE_API_MESSAGE)ApiMessage)->Data.WriteConsoleRequest;
-    PCHAR Buffer;
-    PCSRSS_SCREEN_BUFFER Buff;
-    // PCSR_PROCESS Process = CsrGetClientThread()->Process;
-    PCSRSS_CONSOLE Console;
-    DWORD Written = 0;
-    ULONG Length;
-    // ULONG CharSize = (WriteConsoleRequest->Unicode ? sizeof(WCHAR) :
sizeof(CHAR));
 
     DPRINT("SrvWriteConsole\n");
 
@@ -564,68 +648,12 @@
         return STATUS_INVALID_PARAMETER;
     }
 
-    Status =
ConioLockScreenBuffer(ConsoleGetPerProcessData(CsrGetClientThread()->Process),
WriteConsoleRequest->ConsoleHandle, &Buff, GENERIC_WRITE);
-    if (!NT_SUCCESS(Status)) return Status;
-
-    Console = Buff->Header.Console;
-
-/** FIXME: Added in 47359 for pausing
-    if (Console->UnpauseEvent)
-    {
-        Status = NtDuplicateObject(NtCurrentProcess(),
-                                   Console->UnpauseEvent,
-                                   Process->ProcessHandle,
-                                   &WriteConsoleRequest->UnpauseEvent,
-                                   SYNCHRONIZE, 0, 0);
-        ConioUnlockScreenBuffer(Buff);
-        return (NT_SUCCESS(Status) ? STATUS_PENDING : Status);
-    }
-**/
-
-    if(WriteConsoleRequest->Unicode)
-    {
-        Length = WideCharToMultiByte(Console->OutputCodePage, 0,
-                                     (PWCHAR)WriteConsoleRequest->Buffer,
-                                     WriteConsoleRequest->NrCharactersToWrite,
-                                     NULL, 0, NULL, NULL);
-        Buffer = RtlAllocateHeap(GetProcessHeap(), 0, Length);
-        if (Buffer)
-        {
-            WideCharToMultiByte(Console->OutputCodePage, 0,
-                                (PWCHAR)WriteConsoleRequest->Buffer,
-                                WriteConsoleRequest->NrCharactersToWrite,
-                                Buffer, Length, NULL, NULL);
-        }
-        else
-        {
-            Status = STATUS_NO_MEMORY;
-        }
-    }
-    else
-    {
-        Buffer = (PCHAR)WriteConsoleRequest->Buffer;
-    }
-
-    if (Buffer)
-    {
-        if (NT_SUCCESS(Status))
-        {
-            Status = ConioWriteConsole(Console, Buff, Buffer,
-                                       WriteConsoleRequest->NrCharactersToWrite,
TRUE);
-            if (NT_SUCCESS(Status))
-            {
-                Written = WriteConsoleRequest->NrCharactersToWrite;
-            }
-        }
-        if (WriteConsoleRequest->Unicode)
-        {
-            RtlFreeHeap(GetProcessHeap(), 0, Buffer);
-        }
-    }
-
-    ConioUnlockScreenBuffer(Buff);
-
-    WriteConsoleRequest->NrCharactersWritten = Written;
+    Status = DoWriteConsole(ApiMessage,
+                            CsrGetClientThread(),
+                            TRUE);
+
+    if (Status == STATUS_PENDING)
+        *ReplyCode = CsrReplyPending;
 
     return Status;
 }
@@ -667,15 +695,6 @@
     if (!NT_SUCCESS(Status)) return Status;
 
     Console = Buff->Header.Console;
-
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process, CharInfo,
-                                BufferSize.X * BufferSize.Y, sizeof(CHAR_INFO)))
-    {
-        ConioUnlockScreenBuffer(Buff);
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     WriteRegion = WriteConsoleOutputRequest->WriteRegion;
 

Modified: branches/ros-csrss/win32ss/user/consrv/console.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/c…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/console.c [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/console.c [iso-8859-1] Sat Dec  8 16:13:16
2012
@@ -115,6 +115,7 @@
     InitializeListHead(&Console->BufferList);
     Console->ActiveBuffer = NULL;
     InitializeListHead(&Console->ReadWaitQueue);
+    InitializeListHead(&Console->WriteWaitQueue);
     InitializeListHead(&Console->InputEvents);
     InitializeListHead(&Console->HistoryBuffers);
     Console->CodePage = GetOEMCP();
@@ -426,6 +427,7 @@
     DPRINT("ConioDeleteConsole\n");
 
     /* TODO: Dereference all the waits in Console->ReadWaitQueue */
+    /* TODO: Dereference all the waits in Console->WriteWaitQueue */
 
     /* Drain input event queue */
     while (Console->InputEvents.Flink != &Console->InputEvents)
@@ -476,11 +478,18 @@
 ConioUnpause(PCSRSS_CONSOLE Console, UINT Flags)
 {
     Console->PauseFlags &= ~Flags;
+
+    // if ((Console->PauseFlags & (PAUSED_FROM_KEYBOARD | PAUSED_FROM_SCROLLBAR |
PAUSED_FROM_SELECTION)) == 0)
     if (Console->PauseFlags == 0 && Console->UnpauseEvent)
     {
         SetEvent(Console->UnpauseEvent);
         CloseHandle(Console->UnpauseEvent);
         Console->UnpauseEvent = NULL;
+
+        CsrNotifyWait(&Console->WriteWaitQueue,
+                      WaitAll,
+                      NULL,
+                      NULL);
     }
 }
 
@@ -569,13 +578,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(Process, TitleRequest->Title,
-                                TitleRequest->Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status =
ConioConsoleFromProcessData(ConsoleGetPerProcessData(CsrGetClientThread()->Process),
&Console);
     if(NT_SUCCESS(Status))
@@ -626,13 +628,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(Process, TitleRequest->Title,
-                                TitleRequest->Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status =
ConioConsoleFromProcessData(ConsoleGetPerProcessData(CsrGetClientThread()->Process),
&Console);
     if (!NT_SUCCESS(Status))
@@ -846,11 +841,6 @@
 
     Buffer = GetProcessListRequest->pProcessIds;
 
-/*
-    if (!Win32CsrValidateBuffer(ProcessData, Buffer, GetProcessListRequest->nMaxIds,
sizeof(DWORD)))
-        return STATUS_ACCESS_VIOLATION;
-*/
-
     Status =
ConioConsoleFromProcessData(ConsoleGetPerProcessData(CsrGetClientThread()->Process),
&Console);
     if (!NT_SUCCESS(Status)) return Status;
 

Modified: branches/ros-csrss/win32ss/user/consrv/consrv.h
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/c…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/consrv.h [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/consrv.h [iso-8859-1] Sat Dec  8 16:13:16 2012
@@ -140,14 +140,6 @@
 CSR_API(SrvGetConsoleHistory);
 CSR_API(SrvSetConsoleHistory);
 
-/* server.c */
-#if 0
-BOOL FASTCALL Win32CsrValidateBuffer(PCSR_PROCESS ProcessData,
-                                     PVOID Buffer,
-                                     SIZE_T NumElements,
-                                     SIZE_T ElementSize);
-#endif
-
 #endif // __CONSRV_H__
 
 /* EOF */

Modified: branches/ros-csrss/win32ss/user/consrv/lineinput.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/l…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/lineinput.c [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/lineinput.c [iso-8859-1] Sat Dec  8 16:13:16
2012
@@ -166,14 +166,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process,
-                                GetCommandHistoryLength->ExeName.Buffer,
-                                GetCommandHistoryLength->ExeName.Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status = ConioConsoleFromProcessData(ProcessData, &Console);
     if (NT_SUCCESS(Status))
@@ -212,15 +204,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process, Buffer, BufferSize, 1) ||
-        !Win32CsrValidateBuffer(ProcessData->Process,
-                                GetCommandHistory->ExeName.Buffer,
-                                GetCommandHistory->ExeName.Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status = ConioConsoleFromProcessData(ProcessData, &Console);
     if (NT_SUCCESS(Status))
@@ -262,14 +245,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process,
-                                ExpungeCommandHistory->ExeName.Buffer,
-                                ExpungeCommandHistory->ExeName.Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status = ConioConsoleFromProcessData(ProcessData, &Console);
     if (NT_SUCCESS(Status))
@@ -298,14 +273,6 @@
     {
         return STATUS_INVALID_PARAMETER;
     }
-/*
-    if (!Win32CsrValidateBuffer(ProcessData->Process,
-                                SetHistoryNumberCommands->ExeName.Buffer,
-                                SetHistoryNumberCommands->ExeName.Length, 1))
-    {
-        return STATUS_ACCESS_VIOLATION;
-    }
-*/
 
     Status = ConioConsoleFromProcessData(ProcessData, &Console);
     if (NT_SUCCESS(Status))

Removed: branches/ros-csrss/win32ss/user/consrv/server.c
URL:
http://svn.reactos.org/svn/reactos/branches/ros-csrss/win32ss/user/consrv/s…
==============================================================================
--- branches/ros-csrss/win32ss/user/consrv/server.c [iso-8859-1] (original)
+++ branches/ros-csrss/win32ss/user/consrv/server.c (removed)
@@ -1,42 +1,0 @@
-/*
- * COPYRIGHT:       See COPYING in the top level directory
- * PROJECT:         ReactOS Console Server DLL
- * FILE:            win32ss/user/consrv/init.c
- * PURPOSE:         Server APIs
- * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca(a)sfr.fr)
- */
-
-#include "consrv.h"
-
-#define NDEBUG
-#include <debug.h>
-
-#if 0
-/* Ensure that a captured buffer is safe to access */
-BOOL FASTCALL
-Win32CsrValidateBuffer(PCSR_PROCESS ProcessData, PVOID Buffer,
-                       SIZE_T NumElements, SIZE_T ElementSize)
-{
-    /* Check that the following conditions are true:
-     * 1. The start of the buffer is somewhere within the process's
-     *    shared memory section view.
-     * 2. The remaining space in the view is at least as large as the buffer.
-     *    (NB: Please don't try to "optimize" this by using multiplication
-     *    instead of division; remember that 2147483648 * 2 = 0.)
-     * 3. The buffer is DWORD-aligned.
-     */
-    ULONG_PTR Offset = (BYTE *)Buffer - (BYTE *)ProcessData->ClientViewBase;
-    if (Offset >= ProcessData->ClientViewBounds
-            || NumElements > (ProcessData->ClientViewBounds - Offset) /
ElementSize
-            || (Offset & (sizeof(DWORD) - 1)) != 0)
-    {
-        DPRINT1("Invalid buffer %p(%u*%u); section view is %p(%u)\n",
-                Buffer, NumElements, ElementSize,
-                ProcessData->ClientViewBase, ProcessData->ClientViewBounds);
-        return FALSE;
-    }
-    return TRUE;
-}
-#endif
-
-/* EOF */