664 lines
17 KiB
C
664 lines
17 KiB
C
/*++
|
||
|
||
Copyright (c) 1995 Microsoft Corporation
|
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|
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Module Name:
|
||
|
||
win32.c
|
||
|
||
Abstract:
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|
||
This module implements the definition of the executive Win32 objects.
|
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Functions to manage these objects are implemented in win32k.sys.
|
||
|
||
Author:
|
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|
||
James I. Anderson (jima) 14-June-1995
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|
||
Environment:
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||
|
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Kernel mode only.
|
||
|
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Revision History:
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||
--*/
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|
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#include "exp.h"
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//
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// Address of windowstation and desktop object type descriptors.
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//
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POBJECT_TYPE ExWindowStationObjectType;
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POBJECT_TYPE ExDesktopObjectType;
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PKWIN32_CLOSEMETHOD_CALLOUT ExDesktopCloseProcedureCallout;
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PKWIN32_CLOSEMETHOD_CALLOUT ExWindowStationCloseProcedureCallout;
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PKWIN32_OPENMETHOD_CALLOUT ExDesktopOpenProcedureCallout;
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PKWIN32_OKTOCLOSEMETHOD_CALLOUT ExDesktopOkToCloseProcedureCallout;
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PKWIN32_OKTOCLOSEMETHOD_CALLOUT ExWindowStationOkToCloseProcedureCallout;
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PKWIN32_DELETEMETHOD_CALLOUT ExDesktopDeleteProcedureCallout;
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PKWIN32_DELETEMETHOD_CALLOUT ExWindowStationDeleteProcedureCallout;
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PKWIN32_PARSEMETHOD_CALLOUT ExWindowStationParseProcedureCallout;
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PKWIN32_OPENMETHOD_CALLOUT ExWindowStationOpenProcedureCallout;
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//
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// common types for above win32 callouts and parameters
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//
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typedef PVOID PKWIN32_CALLOUT_PARAMETERS;
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typedef
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NTSTATUS
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(*PKWIN32_CALLOUT) (
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IN PKWIN32_CALLOUT_PARAMETERS
|
||
);
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NTSTATUS
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ExpWin32SessionCallout(
|
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IN PKWIN32_CALLOUT CalloutRoutine,
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IN PKWIN32_CALLOUT_PARAMETERS Parameters,
|
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IN ULONG SessionId,
|
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OUT PNTSTATUS CalloutStatus OPTIONAL
|
||
);
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|
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VOID
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ExpWin32CloseProcedure(
|
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IN PEPROCESS Process OPTIONAL,
|
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IN PVOID Object,
|
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IN ACCESS_MASK GrantedAccess,
|
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IN ULONG ProcessHandleCount,
|
||
IN ULONG SystemHandleCount );
|
||
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BOOLEAN
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ExpWin32OkayToCloseProcedure(
|
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IN PEPROCESS Process OPTIONAL,
|
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IN PVOID Object,
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IN HANDLE Handle,
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IN KPROCESSOR_MODE PreviousMode
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||
);
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VOID
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ExpWin32DeleteProcedure(
|
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IN PVOID Object
|
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);
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NTSTATUS
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ExpWin32ParseProcedure (
|
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IN PVOID ParseObject,
|
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IN PVOID ObjectType,
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IN OUT PACCESS_STATE AccessState,
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IN KPROCESSOR_MODE AccessMode,
|
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IN ULONG Attributes,
|
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IN OUT PUNICODE_STRING CompleteName,
|
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IN OUT PUNICODE_STRING RemainingName,
|
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IN OUT PVOID Context OPTIONAL,
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IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
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OUT PVOID *Object
|
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);
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NTSTATUS
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ExpWin32OpenProcedure(
|
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IN OB_OPEN_REASON OpenReason,
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IN PEPROCESS Process OPTIONAL,
|
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IN PVOID Object,
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IN ACCESS_MASK GrantedAccess,
|
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IN ULONG HandleCount
|
||
);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text (INIT, ExpWin32Initialization)
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#pragma alloc_text (PAGE, ExpWin32CloseProcedure)
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#pragma alloc_text (PAGE, ExpWin32OkayToCloseProcedure)
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#pragma alloc_text (PAGE, ExpWin32DeleteProcedure)
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#pragma alloc_text (PAGE, ExpWin32OpenProcedure)
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#pragma alloc_text (PAGE, ExpWin32ParseProcedure)
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#pragma alloc_text (PAGE, ExpWin32SessionCallout)
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#endif
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/*
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* windowstation generic mapping
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*/
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#ifdef ALLOC_DATA_PRAGMA
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#pragma const_seg("INITCONST")
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#endif
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const GENERIC_MAPPING ExpWindowStationMapping = {
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STANDARD_RIGHTS_READ,
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STANDARD_RIGHTS_WRITE,
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STANDARD_RIGHTS_EXECUTE,
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STANDARD_RIGHTS_REQUIRED
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};
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/*
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* desktop generic mapping
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*/
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const GENERIC_MAPPING ExpDesktopMapping = {
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STANDARD_RIGHTS_READ,
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STANDARD_RIGHTS_WRITE,
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STANDARD_RIGHTS_EXECUTE,
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STANDARD_RIGHTS_REQUIRED
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};
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#ifdef ALLOC_DATA_PRAGMA
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#pragma const_seg()
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#endif
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/*++
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Routine Description:
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Close Procedure for Win32k windostation and desktop objects
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Arguments:
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Defined by OB_CLOSE_METHOD
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Return Value:
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|
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--*/
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VOID ExpWin32CloseProcedure(
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IN PEPROCESS Process OPTIONAL,
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IN PVOID Object,
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IN ACCESS_MASK GrantedAccess,
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IN ULONG ProcessHandleCount,
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IN ULONG SystemHandleCount )
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{
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|
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//
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// SessionId is the first field in the Win32k Object structure
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//
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ULONG SessionId = *((PULONG)Object);
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WIN32_CLOSEMETHOD_PARAMETERS CloseParams;
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NTSTATUS Status;
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CloseParams.Process = Process;
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CloseParams.Object = Object;
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CloseParams.GrantedAccess = GrantedAccess;
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CloseParams.ProcessHandleCount = ProcessHandleCount;
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CloseParams.SystemHandleCount = SystemHandleCount;
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if ((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExDesktopObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExDesktopCloseProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&CloseParams,
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SessionId,
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NULL);
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ASSERT(NT_SUCCESS(Status));
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} else if ((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExWindowStationObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExWindowStationCloseProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&CloseParams,
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SessionId,
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NULL);
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ASSERT(NT_SUCCESS(Status));
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} else {
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ASSERT((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExDesktopObjectType || (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType));
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}
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}
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/*++
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Routine Description:
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OkayToClose Procedure for Win32k windostation and desktop objects
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Arguments:
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Defined by OB_OKAYTOCLOSE_METHOD
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Return Value:
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--*/
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BOOLEAN ExpWin32OkayToCloseProcedure(
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IN PEPROCESS Process OPTIONAL,
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IN PVOID Object,
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IN HANDLE Handle,
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IN KPROCESSOR_MODE PreviousMode
|
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)
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{
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//
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// SessionId is the first field in the Win32k Object structure
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//
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ULONG SessionId = *((PULONG)Object);
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WIN32_OKAYTOCLOSEMETHOD_PARAMETERS OKToCloseParams;
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NTSTATUS Status, CallStatus = STATUS_UNSUCCESSFUL;
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OKToCloseParams.Process = Process;
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OKToCloseParams.Object = Object;
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OKToCloseParams.Handle = Handle;
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OKToCloseParams.PreviousMode = PreviousMode;
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if (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExDesktopObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExDesktopOkToCloseProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&OKToCloseParams,
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SessionId,
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&CallStatus);
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ASSERT(NT_SUCCESS(Status));
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} else if (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExWindowStationOkToCloseProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&OKToCloseParams,
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SessionId,
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&CallStatus);
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ASSERT(NT_SUCCESS(Status));
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} else {
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ASSERT(OBJECT_TO_OBJECT_HEADER(Object)->Type == ExDesktopObjectType ||
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OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType);
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}
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return (BOOLEAN)(NT_SUCCESS(CallStatus));
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}
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/*++
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Routine Description:
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Delete Procedure for Win32k windostation and desktop objects
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Arguments:
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Defined by OB_DELETE_METHOD
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Return Value:
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||
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--*/
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VOID ExpWin32DeleteProcedure(
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IN PVOID Object
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||
)
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{
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//
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// SessionId is the first field in the Win32k Object structure
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//
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ULONG SessionId = *((PULONG)Object);
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WIN32_DELETEMETHOD_PARAMETERS DeleteParams;
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NTSTATUS Status;
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DeleteParams.Object = Object;
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if (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExDesktopObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExDesktopDeleteProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&DeleteParams,
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SessionId,
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NULL);
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ASSERT(NT_SUCCESS(Status));
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||
|
||
} else if (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType) {
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Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExWindowStationDeleteProcedureCallout,
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(PKWIN32_CALLOUT_PARAMETERS)&DeleteParams,
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SessionId,
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NULL);
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ASSERT(NT_SUCCESS(Status));
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} else {
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ASSERT(OBJECT_TO_OBJECT_HEADER(Object)->Type == ExDesktopObjectType ||
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OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType);
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}
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||
}
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||
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||
/*++
|
||
|
||
Routine Description:
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||
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||
Open Procedure for Win32k desktop objects
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||
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Arguments:
|
||
Defined by OB_OPEN_METHOD
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||
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||
Return Value:
|
||
|
||
|
||
--*/
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NTSTATUS
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ExpWin32OpenProcedure(
|
||
IN OB_OPEN_REASON OpenReason,
|
||
IN PEPROCESS Process OPTIONAL,
|
||
IN PVOID Object,
|
||
IN ACCESS_MASK GrantedAccess,
|
||
IN ULONG HandleCount
|
||
)
|
||
{
|
||
|
||
//
|
||
// SessionId is the first field in the Win32k Object structure
|
||
//
|
||
ULONG SessionId = *((PULONG)Object);
|
||
WIN32_OPENMETHOD_PARAMETERS OpenParams;
|
||
NTSTATUS Status = STATUS_UNSUCCESSFUL;
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||
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OpenParams.OpenReason = OpenReason;
|
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OpenParams.Process = Process;
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OpenParams.Object = Object;
|
||
OpenParams.GrantedAccess = GrantedAccess;
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OpenParams.HandleCount = HandleCount;
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||
|
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|
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if ((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExDesktopObjectType) {
|
||
|
||
Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExDesktopOpenProcedureCallout,
|
||
(PKWIN32_CALLOUT_PARAMETERS)&OpenParams,
|
||
SessionId,
|
||
NULL);
|
||
|
||
ASSERT(NT_SUCCESS(Status));
|
||
|
||
} else if ((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExWindowStationObjectType) {
|
||
|
||
Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExWindowStationOpenProcedureCallout,
|
||
(PKWIN32_CALLOUT_PARAMETERS)&OpenParams,
|
||
SessionId,
|
||
NULL);
|
||
ASSERT(NT_SUCCESS(Status));
|
||
|
||
} else {
|
||
ASSERT((OBJECT_TO_OBJECT_HEADER(Object)->Type) == ExDesktopObjectType || (OBJECT_TO_OBJECT_HEADER(Object)->Type == ExWindowStationObjectType));
|
||
|
||
}
|
||
|
||
return Status;
|
||
}
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Parse Procedure for Win32k windostation objects
|
||
|
||
Arguments:
|
||
Defined by OB_PARSE_METHOD
|
||
|
||
|
||
Return Value:
|
||
|
||
|
||
--*/
|
||
|
||
NTSTATUS ExpWin32ParseProcedure (
|
||
IN PVOID ParseObject,
|
||
IN PVOID ObjectType,
|
||
IN OUT PACCESS_STATE AccessState,
|
||
IN KPROCESSOR_MODE AccessMode,
|
||
IN ULONG Attributes,
|
||
IN OUT PUNICODE_STRING CompleteName,
|
||
IN OUT PUNICODE_STRING RemainingName,
|
||
IN OUT PVOID Context OPTIONAL,
|
||
IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
|
||
OUT PVOID *Object
|
||
)
|
||
{
|
||
|
||
//
|
||
// SessionId is the first field in the Win32k Object structure
|
||
//
|
||
ULONG SessionId = *((PULONG)ParseObject);
|
||
WIN32_PARSEMETHOD_PARAMETERS ParseParams;
|
||
NTSTATUS Status, CallStatus = STATUS_UNSUCCESSFUL;
|
||
|
||
ParseParams.ParseObject = ParseObject;
|
||
ParseParams.ObjectType = ObjectType;
|
||
ParseParams.AccessState = AccessState;
|
||
ParseParams.AccessMode = AccessMode;
|
||
ParseParams.Attributes = Attributes;
|
||
ParseParams.CompleteName = CompleteName;
|
||
ParseParams.RemainingName = RemainingName;
|
||
ParseParams.Context = Context;
|
||
ParseParams.SecurityQos = SecurityQos;
|
||
ParseParams.Object = Object;
|
||
|
||
//
|
||
// Parse Procedure is only provided for WindowStation objects
|
||
//
|
||
Status = ExpWin32SessionCallout((PKWIN32_CALLOUT)ExWindowStationParseProcedureCallout,
|
||
(PKWIN32_CALLOUT_PARAMETERS)&ParseParams,
|
||
SessionId,
|
||
&CallStatus);
|
||
ASSERT(NT_SUCCESS(Status));
|
||
|
||
return CallStatus;
|
||
|
||
}
|
||
|
||
|
||
BOOLEAN
|
||
ExpWin32Initialization (
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This function creates the Win32 object type descriptors at system
|
||
initialization and stores the address of the object type descriptor
|
||
in local static storage.
|
||
|
||
Arguments:
|
||
|
||
None.
|
||
|
||
Return Value:
|
||
|
||
A value of TRUE is returned if the Win32 object type descriptors are
|
||
successfully created. Otherwise a value of FALSE is returned.
|
||
|
||
--*/
|
||
|
||
{
|
||
|
||
OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
|
||
NTSTATUS Status;
|
||
UNICODE_STRING TypeName;
|
||
|
||
//
|
||
// Initialize string descriptor.
|
||
//
|
||
|
||
RtlInitUnicodeString(&TypeName, L"WindowStation");
|
||
|
||
//
|
||
// Create windowstation object type descriptor.
|
||
//
|
||
|
||
RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
|
||
ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
|
||
ObjectTypeInitializer.GenericMapping = ExpWindowStationMapping;
|
||
ObjectTypeInitializer.SecurityRequired = TRUE;
|
||
ObjectTypeInitializer.PoolType = NonPagedPool;
|
||
|
||
ObjectTypeInitializer.CloseProcedure = ExpWin32CloseProcedure;
|
||
ObjectTypeInitializer.DeleteProcedure = ExpWin32DeleteProcedure;
|
||
ObjectTypeInitializer.OkayToCloseProcedure = ExpWin32OkayToCloseProcedure;
|
||
|
||
ObjectTypeInitializer.ParseProcedure = ExpWin32ParseProcedure;
|
||
ObjectTypeInitializer.OpenProcedure = ExpWin32OpenProcedure;
|
||
|
||
ObjectTypeInitializer.InvalidAttributes = OBJ_OPENLINK |
|
||
OBJ_PERMANENT |
|
||
OBJ_EXCLUSIVE;
|
||
ObjectTypeInitializer.ValidAccessMask = STANDARD_RIGHTS_REQUIRED;
|
||
Status = ObCreateObjectType(&TypeName,
|
||
&ObjectTypeInitializer,
|
||
(PSECURITY_DESCRIPTOR)NULL,
|
||
&ExWindowStationObjectType);
|
||
|
||
//
|
||
// If the windowstation object type descriptor was not successfully
|
||
// created, then return a value of FALSE.
|
||
//
|
||
|
||
if (!NT_SUCCESS(Status))
|
||
return FALSE;
|
||
|
||
|
||
|
||
//
|
||
// Initialize string descriptor.
|
||
//
|
||
|
||
RtlInitUnicodeString(&TypeName, L"Desktop");
|
||
|
||
ObjectTypeInitializer.ParseProcedure = NULL; //Desktop has no Parse Procedure
|
||
|
||
//
|
||
// Create windowstation object type descriptor.
|
||
//
|
||
|
||
ObjectTypeInitializer.GenericMapping = ExpDesktopMapping;
|
||
Status = ObCreateObjectType(&TypeName,
|
||
&ObjectTypeInitializer,
|
||
(PSECURITY_DESCRIPTOR)NULL,
|
||
&ExDesktopObjectType);
|
||
|
||
|
||
//
|
||
// If the desktop object type descriptor was successfully created, then
|
||
// return a value of TRUE. Otherwise return a value of FALSE.
|
||
//
|
||
|
||
return (BOOLEAN)(NT_SUCCESS(Status));
|
||
}
|
||
|
||
|
||
|
||
NTSTATUS
|
||
ExpWin32SessionCallout(
|
||
IN PKWIN32_CALLOUT CalloutRoutine,
|
||
IN PKWIN32_CALLOUT_PARAMETERS Parameters,
|
||
IN ULONG SessionId,
|
||
OUT PNTSTATUS CalloutStatus OPTIONAL
|
||
)
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine calls the specified callout routine in session space, for the
|
||
specified session.
|
||
|
||
Parameters:
|
||
|
||
CalloutRoutine - Callout routine in session space.
|
||
|
||
Parameters - Parameters to pass the callout routine.
|
||
|
||
SessionId - Specifies the ID of the session in which the specified
|
||
callout routine is to be called.
|
||
|
||
CalloutStatus - Optionally, supplies the address of a variable to receive
|
||
the NTSTATUS code returned by the callout routine.
|
||
|
||
Return Value:
|
||
|
||
Status code that indicates whether or not the function was successful.
|
||
|
||
Notes:
|
||
|
||
Returns STATUS_NOT_FOUND if the specified session was not found.
|
||
|
||
--*/
|
||
{
|
||
NTSTATUS Status, CallStatus;
|
||
PVOID OpaqueSession;
|
||
KAPC_STATE ApcState;
|
||
|
||
PAGED_CODE();
|
||
|
||
//
|
||
// Make sure we have all the information we need to deliver notification.
|
||
//
|
||
if (CalloutRoutine == NULL) {
|
||
return STATUS_INVALID_PARAMETER;
|
||
}
|
||
|
||
//
|
||
// Make sure the callout routine in session space.
|
||
//
|
||
ASSERT(MmIsSessionAddress((PVOID)CalloutRoutine));
|
||
|
||
if ((PsGetCurrentProcess()->Flags & PS_PROCESS_FLAGS_IN_SESSION) &&
|
||
(SessionId == PsGetCurrentProcessSessionId())) {
|
||
//
|
||
// If the call is from a user mode process, and we are asked to call the
|
||
// current session, call directly.
|
||
//
|
||
CallStatus = (CalloutRoutine)(Parameters);
|
||
|
||
//
|
||
// Return the callout status.
|
||
//
|
||
if (ARGUMENT_PRESENT(CalloutStatus)) {
|
||
*CalloutStatus = CallStatus;
|
||
}
|
||
|
||
Status = STATUS_SUCCESS;
|
||
|
||
} else {
|
||
//
|
||
// Reference the session object for the specified session.
|
||
//
|
||
OpaqueSession = MmGetSessionById(SessionId);
|
||
if (OpaqueSession == NULL) {
|
||
return STATUS_NOT_FOUND;
|
||
}
|
||
|
||
//
|
||
// Attach to the specified session.
|
||
//
|
||
Status = MmAttachSession(OpaqueSession, &ApcState);
|
||
if (!NT_SUCCESS(Status)) {
|
||
KdPrintEx((DPFLTR_SYSTEM_ID, DPFLTR_WARNING_LEVEL,
|
||
"ExpWin32SessionCallout: "
|
||
"could not attach to 0x%p, session %d for registered notification callout @ 0x%p\n",
|
||
OpaqueSession,
|
||
SessionId,
|
||
CalloutRoutine));
|
||
MmQuitNextSession(OpaqueSession);
|
||
return Status;
|
||
}
|
||
|
||
//
|
||
// Dispatch notification to the callout routine.
|
||
//
|
||
CallStatus = (CalloutRoutine)(Parameters);
|
||
|
||
//
|
||
// Return the callout status.
|
||
//
|
||
if (ARGUMENT_PRESENT(CalloutStatus)) {
|
||
*CalloutStatus = CallStatus;
|
||
}
|
||
|
||
//
|
||
// Detach from the session.
|
||
//
|
||
Status = MmDetachSession(OpaqueSession, &ApcState);
|
||
ASSERT(NT_SUCCESS(Status));
|
||
|
||
//
|
||
// Dereference the session object.
|
||
//
|
||
Status = MmQuitNextSession(OpaqueSession);
|
||
ASSERT(NT_SUCCESS(Status));
|
||
}
|
||
|
||
return Status;
|
||
}
|