mirror of
https://github.com/reactos/reactos.git
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161 lines
4.8 KiB
C
161 lines
4.8 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Win32k subsystem
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* PURPOSE: Console support functions for CONSRV
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* FILE: win32ss/user/ntuser/console.c
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* PROGRAMMER: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
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*/
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#include <win32k.h>
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DBG_DEFAULT_CHANNEL(UserMisc);
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NTSTATUS
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APIENTRY
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NtUserConsoleControl(
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IN CONSOLECONTROL ConsoleCtrl,
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IN PVOID ConsoleCtrlInfo,
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IN ULONG ConsoleCtrlInfoLength)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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/* Allow only the Console Server to perform this operation (via CSRSS) */
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if (PsGetCurrentProcess() != gpepCSRSS)
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return STATUS_ACCESS_DENIED;
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UserEnterExclusive();
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switch (ConsoleCtrl)
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{
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case ConsoleCtrlDesktopConsoleThread:
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{
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DESKTOP_CONSOLE_THREAD DesktopConsoleThreadInfo;
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PDESKTOP Desktop = NULL;
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ULONG_PTR OldThreadId;
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if (ConsoleCtrlInfoLength != sizeof(DesktopConsoleThreadInfo))
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{
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Status = STATUS_INFO_LENGTH_MISMATCH;
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break;
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}
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_SEH2_TRY
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{
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ProbeForWrite(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
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DesktopConsoleThreadInfo = *(PDESKTOP_CONSOLE_THREAD)ConsoleCtrlInfo;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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_SEH2_YIELD(break);
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}
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_SEH2_END;
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/* Reference the desktop */
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Status = ObReferenceObjectByHandle(DesktopConsoleThreadInfo.DesktopHandle,
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0,
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ExDesktopObjectType,
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UserMode,
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(PVOID*)&Desktop,
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NULL);
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if (!NT_SUCCESS(Status)) break;
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/* Save the old thread ID, it is always returned to the caller */
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OldThreadId = Desktop->dwConsoleThreadId;
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/* Set the new console input thread ID for this desktop if required */
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if (DesktopConsoleThreadInfo.ThreadId != (ULONG_PTR)INVALID_HANDLE_VALUE)
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{
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Desktop->dwConsoleThreadId = DesktopConsoleThreadInfo.ThreadId;
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}
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/* Always return the old thread ID */
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DesktopConsoleThreadInfo.ThreadId = OldThreadId;
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/* Dereference the desktop */
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ObDereferenceObject(Desktop);
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/* Return the information back to the caller */
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_SEH2_TRY
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{
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*(PDESKTOP_CONSOLE_THREAD)ConsoleCtrlInfo = DesktopConsoleThreadInfo;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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break;
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}
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case GuiConsoleWndClassAtom:
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{
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if (ConsoleCtrlInfoLength != sizeof(ATOM))
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{
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Status = STATUS_INFO_LENGTH_MISMATCH;
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break;
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}
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_SEH2_TRY
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{
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ProbeForRead(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
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gaGuiConsoleWndClass = *(ATOM*)ConsoleCtrlInfo;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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break;
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}
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case ConsoleMakePalettePublic:
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{
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HPALETTE hPalette;
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if (ConsoleCtrlInfoLength != sizeof(hPalette))
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{
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Status = STATUS_INFO_LENGTH_MISMATCH;
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break;
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}
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_SEH2_TRY
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{
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ProbeForRead(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
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hPalette = *(HPALETTE*)ConsoleCtrlInfo;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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_SEH2_YIELD(break);
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}
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_SEH2_END;
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/* Make the palette handle public */
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GreSetObjectOwnerEx(hPalette,
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GDI_OBJ_HMGR_PUBLIC,
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GDIOBJFLAG_IGNOREPID);
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break;
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}
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case ConsoleAcquireDisplayOwnership:
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{
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ERR("NtUserConsoleControl - ConsoleAcquireDisplayOwnership is UNIMPLEMENTED\n");
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Status = STATUS_NOT_IMPLEMENTED;
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break;
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}
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default:
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ERR("Calling invalid control %d in NtUserConsoleControl\n", ConsoleCtrl);
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Status = STATUS_INVALID_INFO_CLASS;
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break;
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}
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UserLeave();
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return Status;
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}
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/* EOF */
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