545 lines
14 KiB
C++
545 lines
14 KiB
C++
|
#include "precomp.h"
|
||
|
|
#include <version.h>
|
||
|
|
#include <ndcgver.h>
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef DM_POSITION
|
||
|
|
#define DM_POSITION 0x00000020L
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI.CPP
|
||
|
|
// OS Isolation layer, NT version
|
||
|
|
//
|
||
|
|
// Copyright(c) Microsoft 1997-
|
||
|
|
//
|
||
|
|
|
||
|
|
#include <version.h>
|
||
|
|
#include <ndcgver.h>
|
||
|
|
#include <osi.h>
|
||
|
|
|
||
|
|
#define MLZ_FILE_ZONE ZONE_CORE
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// NT 5.0 app sharing stuff.
|
||
|
|
//
|
||
|
|
typedef BOOL (WINAPI * FN_ENUMDD)(LPVOID, DWORD, LPDISPLAY_DEVICE, DWORD);
|
||
|
|
|
||
|
|
//
|
||
|
|
// SALEM BUGBUG
|
||
|
|
// This string must be IDENTICAL to that from \ntx.reg, the key which
|
||
|
|
// is installed into the registry for the "Device Description" value
|
||
|
|
//
|
||
|
|
static TCHAR s_szNmDD[] = "Salem sharing driver";
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_Load()
|
||
|
|
// This handles our process attach. We figure out if this is NT5 or not
|
||
|
|
//
|
||
|
|
void OSI_Load(void)
|
||
|
|
{
|
||
|
|
OSVERSIONINFO osVersion;
|
||
|
|
|
||
|
|
ZeroMemory(&osVersion, sizeof(osVersion));
|
||
|
|
osVersion.dwOSVersionInfoSize = sizeof(osVersion);
|
||
|
|
GetVersionEx(&osVersion);
|
||
|
|
ASSERT(osVersion.dwPlatformId == VER_PLATFORM_WIN32_NT);
|
||
|
|
|
||
|
|
if (osVersion.dwMajorVersion >= 5)
|
||
|
|
g_asNT5 = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_Unload()
|
||
|
|
// This handles our process detach. We currently do nothing.
|
||
|
|
//
|
||
|
|
void OSI_Unload(void)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_InitDriver50()
|
||
|
|
//
|
||
|
|
// Attemps to dynamically load/unload our display driver for NT 5.0. This is
|
||
|
|
// called on the main thread, and if under a service, on the winlogon
|
||
|
|
// thread also. It will only succeed on the input focus desktop.
|
||
|
|
//
|
||
|
|
void OSI_InitDriver50(BOOL fInit)
|
||
|
|
{
|
||
|
|
DWORD iEnum;
|
||
|
|
DISPLAY_DEVICE dd;
|
||
|
|
DEVMODE devmode;
|
||
|
|
FN_ENUMDD pfnEnumDD;
|
||
|
|
|
||
|
|
DebugEntry(OSI_InitDriver50);
|
||
|
|
|
||
|
|
ASSERT(g_asNT5);
|
||
|
|
|
||
|
|
pfnEnumDD = (FN_ENUMDD)GetProcAddress(GetModuleHandle("USER32.DLL"),
|
||
|
|
"EnumDisplayDevicesA");
|
||
|
|
if (pfnEnumDD != NULL)
|
||
|
|
{
|
||
|
|
ZeroMemory(&dd, sizeof(dd));
|
||
|
|
dd.cb = sizeof(dd);
|
||
|
|
|
||
|
|
iEnum = 0;
|
||
|
|
while (pfnEnumDD(NULL, iEnum++, &dd, 0))
|
||
|
|
{
|
||
|
|
if ((dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) &&
|
||
|
|
!lstrcmpi((LPCSTR)dd.DeviceString, s_szNmDD))
|
||
|
|
{
|
||
|
|
LONG lResult;
|
||
|
|
|
||
|
|
//
|
||
|
|
// There may be multiple monitors, drivers, etc.
|
||
|
|
// We have to actually tell the system what bit depth,
|
||
|
|
// format, etc. our driver wants just like if we were
|
||
|
|
// a real driver. We therefore always ask to get 24bpp
|
||
|
|
// format info, no myriad 16bpp and 32bpp formats to deal
|
||
|
|
// with anymore.
|
||
|
|
//
|
||
|
|
// Also, no more 4bpp not VGA nonsense either--just 8 or 24.
|
||
|
|
//
|
||
|
|
|
||
|
|
ZeroMemory(&devmode, sizeof(devmode));
|
||
|
|
devmode.dmSize = sizeof(devmode);
|
||
|
|
devmode.dmFields = DM_POSITION | DM_BITSPERPEL | DM_PELSWIDTH |
|
||
|
|
DM_PELSHEIGHT;
|
||
|
|
|
||
|
|
if (fInit)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Fill in fields to get driver attached.
|
||
|
|
//
|
||
|
|
if (g_usrCaptureBPP <= 8)
|
||
|
|
g_usrCaptureBPP = 8;
|
||
|
|
else
|
||
|
|
g_usrCaptureBPP = 24;
|
||
|
|
devmode.dmBitsPerPel = g_usrCaptureBPP;
|
||
|
|
|
||
|
|
// devmode.dmPosition is (0, 0), this means "primary"
|
||
|
|
devmode.dmPelsWidth = GetSystemMetrics(SM_CXSCREEN);
|
||
|
|
devmode.dmPelsHeight = GetSystemMetrics(SM_CYSCREEN);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// This simply changes the state in the registry from
|
||
|
|
// attached to unattached, without the system actually
|
||
|
|
// reflecting the change. If/when we have multiple
|
||
|
|
// listings for our shadow driver, move the CDS(NULL, 0)
|
||
|
|
// call outside the loop, and get rid of the break.
|
||
|
|
//
|
||
|
|
lResult = ChangeDisplaySettingsEx((LPCSTR)dd.DeviceName, &devmode,
|
||
|
|
NULL, CDS_UPDATEREGISTRY | CDS_NORESET, NULL);
|
||
|
|
if (lResult != DISP_CHANGE_SUCCESSFUL)
|
||
|
|
{
|
||
|
|
WARNING_OUT(("ChangeDisplaySettingsEx failed, error %d", lResult));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This causes Windows to actually go reread the registry and
|
||
|
|
// update the current display to reflect the attached items,
|
||
|
|
// positions, sizes, and color depths.
|
||
|
|
//
|
||
|
|
ChangeDisplaySettings(NULL, 0);
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
if (fInit)
|
||
|
|
{
|
||
|
|
HDC hdc;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Create a temp DC based on this driver and make sure
|
||
|
|
// the settings matched what we asked for.
|
||
|
|
//
|
||
|
|
hdc = CreateDC(NULL, (LPCSTR)dd.DeviceName, NULL, NULL);
|
||
|
|
|
||
|
|
if (!hdc)
|
||
|
|
{
|
||
|
|
WARNING_OUT(("OSI_Init: dynamic display driver load failed"));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ASSERT(GetDeviceCaps(hdc, HORZRES) == (int)devmode.dmPelsWidth);
|
||
|
|
ASSERT(GetDeviceCaps(hdc, VERTRES) == (int)devmode.dmPelsHeight);
|
||
|
|
ASSERT(GetDeviceCaps(hdc, BITSPIXEL) * GetDeviceCaps(hdc, PLANES) ==
|
||
|
|
(int)g_usrCaptureBPP);
|
||
|
|
|
||
|
|
DeleteDC(hdc);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif // _DEBUG
|
||
|
|
|
||
|
|
//
|
||
|
|
// Tell MNMHOOK_ the name of our driver so it can talk
|
||
|
|
// to it via ExtEscape.
|
||
|
|
//
|
||
|
|
OSI_SetDriverName(fInit ? (LPCSTR)dd.DeviceName : NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DebugExitVOID(OSI_InitDriver50);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_Init - see osi.h
|
||
|
|
//
|
||
|
|
void OSI_Init(void)
|
||
|
|
{
|
||
|
|
UINT i;
|
||
|
|
OSI_INIT_REQUEST requestBuffer;
|
||
|
|
|
||
|
|
DebugEntry(OSI_Init);
|
||
|
|
|
||
|
|
//
|
||
|
|
// First, setup up pointer to shared data. This data lives here in NT.
|
||
|
|
//
|
||
|
|
#ifdef DEBUG
|
||
|
|
g_imSharedData.cbSize = sizeof(g_imSharedData);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
g_lpimSharedData = &g_imSharedData;
|
||
|
|
|
||
|
|
requestBuffer.result = FALSE;
|
||
|
|
requestBuffer.pSharedMemory = NULL;
|
||
|
|
requestBuffer.poaData[0] = NULL;
|
||
|
|
requestBuffer.poaData[1] = NULL;
|
||
|
|
requestBuffer.sbcEnabled = FALSE;
|
||
|
|
|
||
|
|
for (i = 0; i < SBC_NUM_TILE_SIZES; i++)
|
||
|
|
{
|
||
|
|
ASSERT(!g_asbcShuntBuffers[i]);
|
||
|
|
requestBuffer.psbcTileData[i] = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Do this FIRST. On NT5, only threads on the desktop with input
|
||
|
|
// can succeed at calling ChangeDisplaySettings. So like other things,
|
||
|
|
// we must try to dynamically load/unload our driver on both desks.
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// Create the winlogon desktop event injection helper thread
|
||
|
|
// only if we're started as a service. Note that it will try to
|
||
|
|
// load display at start too.
|
||
|
|
//
|
||
|
|
ASSERT(!g_imNTData.imOtherDesktopThread);
|
||
|
|
|
||
|
|
if (g_asOptions & AS_SERVICE)
|
||
|
|
{
|
||
|
|
WARNING_OUT(("Starting other desktop thread for SERVICE"));
|
||
|
|
if (!DCS_StartThread(IMOtherDesktopProc))
|
||
|
|
{
|
||
|
|
WARNING_OUT(( "Failed to create other desktop IM thread"));
|
||
|
|
DC_QUIT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// DO THIS ONLY FOR NT5
|
||
|
|
// We are going to enumerate all the entries for our shadow driver
|
||
|
|
// (currently only one) and attach each to the actual display.
|
||
|
|
//
|
||
|
|
if (g_asNT5)
|
||
|
|
{
|
||
|
|
OSI_InitDriver50(TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
DC_EXIT_POINT:
|
||
|
|
g_osiInitialized = OSI_FunctionRequest(OSI_ESC_INIT, (LPOSI_ESCAPE_HEADER)&requestBuffer,
|
||
|
|
sizeof(requestBuffer));
|
||
|
|
|
||
|
|
if (!g_osiInitialized)
|
||
|
|
{
|
||
|
|
WARNING_OUT(("OSI_ESC_INIT: display driver not present"));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (requestBuffer.result)
|
||
|
|
{
|
||
|
|
g_asCanHost = TRUE;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Got shared memory pointers; keep them around
|
||
|
|
//
|
||
|
|
g_asSharedMemory = (LPSHM_SHARED_MEMORY)requestBuffer.pSharedMemory;
|
||
|
|
ASSERT(g_asSharedMemory);
|
||
|
|
|
||
|
|
g_poaData[0] = (LPOA_SHARED_DATA)requestBuffer.poaData[0];
|
||
|
|
ASSERT(g_poaData[0]);
|
||
|
|
|
||
|
|
g_poaData[1] = (LPOA_SHARED_DATA)requestBuffer.poaData[1];
|
||
|
|
ASSERT(g_poaData[1]);
|
||
|
|
|
||
|
|
g_sbcEnabled = requestBuffer.sbcEnabled;
|
||
|
|
if (g_sbcEnabled)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Get shunt buffers
|
||
|
|
//
|
||
|
|
for (i = 0; i < SBC_NUM_TILE_SIZES; i++)
|
||
|
|
{
|
||
|
|
g_asbcShuntBuffers[i] = (LPSBC_SHUNT_BUFFER)requestBuffer.psbcTileData[i];
|
||
|
|
ASSERT(g_asbcShuntBuffers[i]);
|
||
|
|
|
||
|
|
TRACE_OUT(("OSI_Init: sbc shunt buffer %d: entries %08d, bytes 0x%08x",
|
||
|
|
i, g_asbcShuntBuffers[i]->numEntries, g_asbcShuntBuffers[i]->numBytes));
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < 3; i++)
|
||
|
|
{
|
||
|
|
g_asbcBitMasks[i] = requestBuffer.aBitmasks[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (g_asCanHost)
|
||
|
|
{
|
||
|
|
ASSERT(g_asMainWindow);
|
||
|
|
}
|
||
|
|
|
||
|
|
DebugExitVOID(OSI_Init);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_Term - see osi.h
|
||
|
|
//
|
||
|
|
void OSI_Term(void)
|
||
|
|
{
|
||
|
|
UINT i;
|
||
|
|
|
||
|
|
DebugEntry(OSI_Term);
|
||
|
|
|
||
|
|
//
|
||
|
|
// This can be called on multiple threads:
|
||
|
|
// * The main DCS thread
|
||
|
|
// * The last thread of the process causing us to get a process
|
||
|
|
// detach.
|
||
|
|
// We call it in the latter case also to make sure we cleanup properly.
|
||
|
|
//
|
||
|
|
ASSERT(GetCurrentThreadId() == g_asMainThreadId);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Kill the other desktop thread if it's around.
|
||
|
|
//
|
||
|
|
if (g_imNTData.imOtherDesktopThread != 0)
|
||
|
|
{
|
||
|
|
ASSERT(g_asOptions & AS_SERVICE);
|
||
|
|
PostThreadMessage(g_imNTData.imOtherDesktopThread, WM_QUIT, 0, 0);
|
||
|
|
while (g_imNTData.imOtherDesktopThread)
|
||
|
|
{
|
||
|
|
WARNING_OUT(("OSI_Term: waiting for other desktop thread to exit"));
|
||
|
|
Sleep(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if (g_osiInitialized)
|
||
|
|
{
|
||
|
|
OSI_TERM_REQUEST requestBuffer;
|
||
|
|
|
||
|
|
g_osiInitialized = FALSE;
|
||
|
|
|
||
|
|
//
|
||
|
|
// We call the term routine only if the driver is actually loaded
|
||
|
|
// (as opposed to whether something went wrong when trying to setup
|
||
|
|
// for hosting) so that we will cleanup if something went wrong in
|
||
|
|
// the middle.
|
||
|
|
//
|
||
|
|
OSI_FunctionRequest(OSI_ESC_TERM, (LPOSI_ESCAPE_HEADER)&requestBuffer,
|
||
|
|
sizeof(requestBuffer));
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// ONLY DO THIS FOR NT5
|
||
|
|
// We need to undo all the work we did at init time to attach our
|
||
|
|
// driver(s) to the display, and detach them. Again, enumerate the
|
||
|
|
// registry entries and look for ours.
|
||
|
|
//
|
||
|
|
//
|
||
|
|
|
||
|
|
if (g_asNT5)
|
||
|
|
{
|
||
|
|
OSI_InitDriver50(FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Clear our shared memory variables
|
||
|
|
for (i = 0; i < 3; i++)
|
||
|
|
{
|
||
|
|
g_asbcBitMasks[i] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < SBC_NUM_TILE_SIZES; i++)
|
||
|
|
{
|
||
|
|
g_asbcShuntBuffers[i] = NULL;
|
||
|
|
}
|
||
|
|
g_sbcEnabled = FALSE;
|
||
|
|
|
||
|
|
g_asSharedMemory = NULL;
|
||
|
|
g_poaData[0] = NULL;
|
||
|
|
g_poaData[1] = NULL;
|
||
|
|
|
||
|
|
g_asCanHost = FALSE;
|
||
|
|
|
||
|
|
g_lpimSharedData = NULL;
|
||
|
|
|
||
|
|
DebugExitVOID(OSI_Term);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
VOID OSI_RepaintDesktop(void)
|
||
|
|
{
|
||
|
|
DebugEntry(OSI_RepaintDesktop);
|
||
|
|
|
||
|
|
// If this does not appear to be a window it may be a window on the
|
||
|
|
// winlogon desktop, so we need to get the proxy thread to repaint it
|
||
|
|
if ( g_imNTData.imOtherDesktopThread )
|
||
|
|
{
|
||
|
|
PostThreadMessage(g_imNTData.imOtherDesktopThread,
|
||
|
|
OSI_WM_DESKTOPREPAINT, 0, 0);
|
||
|
|
}
|
||
|
|
DebugExitVOID(OSI_RepaintDesktop);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID OSI_SetGUIEffects(BOOL fOff)
|
||
|
|
{
|
||
|
|
DebugEntry(OSI_SetGUIEffects);
|
||
|
|
|
||
|
|
if (g_imNTData.imOtherDesktopThread)
|
||
|
|
{
|
||
|
|
PostThreadMessage(g_imNTData.imOtherDesktopThread,
|
||
|
|
OSI_WM_SETGUIEFFECTS, fOff, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
DebugExitVOID(OSI_SetGUIEffects);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_SetDriverName()
|
||
|
|
// This saves or clears the driver name so in OSI_FunctionRequest we can
|
||
|
|
// create a DC to communicate with our display driver. On NT4.x this is a
|
||
|
|
// display DC; on NT5 this is a direct DC to our driver.
|
||
|
|
//
|
||
|
|
void OSI_SetDriverName(LPCSTR szDriverName)
|
||
|
|
{
|
||
|
|
DebugEntry(OSI_SetDriverName);
|
||
|
|
|
||
|
|
if (!szDriverName)
|
||
|
|
{
|
||
|
|
// Clear it
|
||
|
|
g_osiDriverName[0] = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Set it
|
||
|
|
ASSERT(!g_osiDriverName[0]);
|
||
|
|
lstrcpy(g_osiDriverName, szDriverName);
|
||
|
|
}
|
||
|
|
|
||
|
|
DebugExitVOID(OSI_SetDriverName);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// OSI_FunctionRequest - see osi.h
|
||
|
|
//
|
||
|
|
BOOL OSI_FunctionRequest
|
||
|
|
(
|
||
|
|
DWORD escapeFn,
|
||
|
|
LPOSI_ESCAPE_HEADER pRequest,
|
||
|
|
DWORD requestLen
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL rc = FALSE;
|
||
|
|
ULONG iEsc;
|
||
|
|
HDC hdc;
|
||
|
|
|
||
|
|
DebugEntry(OSI_FunctionRequest);
|
||
|
|
|
||
|
|
if (!g_osiDriverName[0])
|
||
|
|
{
|
||
|
|
// NT 4.x case
|
||
|
|
TRACE_OUT(("OSI_FunctionRequest: Creating %s driver DC",
|
||
|
|
s_osiDisplayName));
|
||
|
|
hdc = CreateDC(s_osiDisplayName, NULL, NULL, NULL);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// NT 5 case
|
||
|
|
TRACE_OUT(("OSI_FunctionRequest: Creating %s driver DC",
|
||
|
|
g_osiDriverName));
|
||
|
|
hdc = CreateDC(NULL, g_osiDriverName, NULL, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!hdc)
|
||
|
|
{
|
||
|
|
ERROR_OUT(("Failed to create DC to talk to driver '%s'", g_osiDriverName));
|
||
|
|
DC_QUIT;
|
||
|
|
}
|
||
|
|
|
||
|
|
TRACE_OUT(("OSI_FunctionRequest: Created %s driver DC %08x",
|
||
|
|
g_osiDriverName, hdc));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Pass the request on to the display driver.
|
||
|
|
//
|
||
|
|
pRequest->padding = 0;
|
||
|
|
pRequest->identifier = OSI_ESCAPE_IDENTIFIER;
|
||
|
|
pRequest->escapeFn = escapeFn;
|
||
|
|
pRequest->version = DCS_MAKE_VERSION();
|
||
|
|
|
||
|
|
if ((escapeFn >= OSI_HET_WO_ESC_FIRST) && (escapeFn <= OSI_HET_WO_ESC_LAST))
|
||
|
|
{
|
||
|
|
iEsc = WNDOBJ_SETUP;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
iEsc = OSI_ESC_CODE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (0 >= ExtEscape(hdc, iEsc, requestLen, (LPCSTR)pRequest,
|
||
|
|
requestLen, (LPSTR)pRequest))
|
||
|
|
{
|
||
|
|
WARNING_OUT(("ExtEscape %x code %d failed", iEsc, escapeFn));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
rc = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
DC_EXIT_POINT:
|
||
|
|
if (hdc)
|
||
|
|
{
|
||
|
|
DeleteDC(hdc);
|
||
|
|
}
|
||
|
|
|
||
|
|
DebugExitDWORD(OSI_FunctionRequest, rc);
|
||
|
|
return(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|