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/*++
Copyright (c) 1995 Microsoft Corporation
Module Name:
win32.c
Abstract:
This module implements the definition of the executive Win32 objects.
Functions to manage these objects are implemented in win32k.sys.
Author:
James I. Anderson (jima) 14-June-1995
Environment:
Kernel mode only.
Revision History:
--*/
#include "exp.h"
//
// Address of windowstation and desktop object type descriptors.
//
POBJECT_TYPE ExWindowStationObjectType;
POBJECT_TYPE ExDesktopObjectType;
/*
* windowstation generic mapping
*/
GENERIC_MAPPING ExpWindowStationMapping = {
STANDARD_RIGHTS_READ,
STANDARD_RIGHTS_WRITE,
STANDARD_RIGHTS_EXECUTE,
STANDARD_RIGHTS_REQUIRED
};
/*
* desktop generic mapping
*/
GENERIC_MAPPING ExpDesktopMapping = {
STANDARD_RIGHTS_READ,
STANDARD_RIGHTS_WRITE,
STANDARD_RIGHTS_EXECUTE,
STANDARD_RIGHTS_REQUIRED
};
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, ExpWin32Initialization)
#endif
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.InvalidAttributes = OBJ_OPENLINK;
ObjectTypeInitializer.GenericMapping = ExpWindowStationMapping;
ObjectTypeInitializer.SecurityRequired = TRUE;
ObjectTypeInitializer.PoolType = NonPagedPool;
ObjectTypeInitializer.InvalidAttributes = 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");
//
// 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));
}
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