ntoskrnl/ex/win32k.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Kernel
   4  * FILE:            ntoskrnl/ex/win32k.c
   5  * PURPOSE:         Executive Win32 Object Support (Desktop/WinStation)
   6  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
   7  */
   8
   9 #include <ntoskrnl.h>
  10 #define NDEBUG
  11 #include <debug.h>
  12
  13 #if defined (ALLOC_PRAGMA)
  14 #pragma alloc_text(INIT, ExpWin32kInit)
  15 #endif
  16
  17 /* DATA **********************************************************************/
  18
  19 POBJECT_TYPE ExWindowStationObjectType = NULL;
  20 POBJECT_TYPE ExDesktopObjectType = NULL;
  21
  22 GENERIC_MAPPING ExpWindowStationMapping =
  23 {
  24     STANDARD_RIGHTS_READ,
  25     STANDARD_RIGHTS_WRITE,
  26     STANDARD_RIGHTS_EXECUTE,
  27     STANDARD_RIGHTS_REQUIRED
  28 };
  29
  30 GENERIC_MAPPING ExpDesktopMapping =
  31 {
  32     STANDARD_RIGHTS_READ,
  33     STANDARD_RIGHTS_WRITE,
  34     STANDARD_RIGHTS_EXECUTE,
  35     STANDARD_RIGHTS_REQUIRED
  36 };
  37
  38 PKWIN32_PARSEMETHOD_CALLOUT ExpWindowStationObjectParse = NULL;
  39 PKWIN32_DELETEMETHOD_CALLOUT ExpWindowStationObjectDelete = NULL;
  40 PKWIN32_DELETEMETHOD_CALLOUT ExpDesktopObjectDelete = NULL;
  41
  42 /* FUNCTIONS ****************************************************************/
  43
  44 VOID
  45 NTAPI
  46 ExpWinStaObjectDelete(PVOID DeletedObject)
  47 {
  48     WIN32_DELETEMETHOD_PARAMETERS Parameters;
  49
  50     /* Fill out the callback structure */
  51     Parameters.Object = DeletedObject;
  52
  53     /* Call the Registered Callback */
  54     ExpWindowStationObjectDelete(&Parameters);
  55 }
  56
  57 NTSTATUS
  58 NTAPI
  59 ExpWinStaObjectParse(IN PVOID ParseObject,
  60                      IN PVOID ObjectType,
  61                      IN OUT PACCESS_STATE AccessState,
  62                      IN KPROCESSOR_MODE AccessMode,
  63                      IN ULONG Attributes,
  64                      IN OUT PUNICODE_STRING CompleteName,
  65                      IN OUT PUNICODE_STRING RemainingName,
  66                      IN OUT PVOID Context OPTIONAL,
  67                      IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
  68                      OUT PVOID *Object)
  69 {
  70     WIN32_PARSEMETHOD_PARAMETERS Parameters;
  71
  72     /* Fill out the callback structure */
  73     Parameters.ParseObject = ParseObject;
  74     Parameters.ObjectType = ObjectType;
  75     Parameters.AccessState = AccessState;
  76     Parameters.AccessMode = AccessMode;
  77     Parameters.Attributes = Attributes;
  78     Parameters.CompleteName = CompleteName;
  79     Parameters.RemainingName = RemainingName;
  80     Parameters.Context = Context;
  81     Parameters.SecurityQos = SecurityQos;
  82     Parameters.Object = Object;
  83
  84     /* Call the Registered Callback */
  85     return ExpWindowStationObjectParse(&Parameters);
  86 }
  87 VOID
  88 NTAPI
  89 ExpDesktopDelete(PVOID DeletedObject)
  90 {
  91     WIN32_DELETEMETHOD_PARAMETERS Parameters;
  92
  93     /* Fill out the callback structure */
  94     Parameters.Object = DeletedObject;
  95
  96     /* Call the Registered Callback */
  97     ExpDesktopObjectDelete(&Parameters);
  98 }
  99
 100 VOID
 101 INIT_FUNCTION
 102 NTAPI
 103 ExpWin32kInit(VOID)
 104 {
 105     OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
 106     UNICODE_STRING Name;
 107     DPRINT("Creating Win32 Object Types\n");
 108
 109     /* Create the window station Object Type */
 110     RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
 111     RtlInitUnicodeString(&Name, L"WindowStation");
 112     ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
 113     ObjectTypeInitializer.GenericMapping = ExpWindowStationMapping;
 114     ObjectTypeInitializer.PoolType = NonPagedPool;
 115     ObjectTypeInitializer.DeleteProcedure = ExpWinStaObjectDelete;
 116     ObjectTypeInitializer.ParseProcedure = ExpWinStaObjectParse;
 117     ObCreateObjectType(&Name,
 118                        &ObjectTypeInitializer,
 119                        NULL,
 120                        &ExWindowStationObjectType);
 121
 122     /* Create desktop object type */
 123     RtlInitUnicodeString(&Name, L"Desktop");
 124     ObjectTypeInitializer.GenericMapping = ExpDesktopMapping;
 125     ObjectTypeInitializer.DeleteProcedure = ExpDesktopDelete;
 126     ObjectTypeInitializer.ParseProcedure = NULL;
 127     ObCreateObjectType(&Name,
 128                        &ObjectTypeInitializer,
 129                        NULL,
 130                        &ExDesktopObjectType);
 131 }
 132
 133 /* EOF */