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_OKTOCLOSEMETHOD_CALLOUT ExpWindowStationObjectOkToClose = NULL;
  41 PKWIN32_OKTOCLOSEMETHOD_CALLOUT ExpDesktopObjectOkToClose = NULL;
  42 PKWIN32_DELETEMETHOD_CALLOUT ExpDesktopObjectDelete = NULL;
  43
  44 /* FUNCTIONS ****************************************************************/
  45
  46 BOOLEAN
  47 NTAPI
  48 ExpDesktopOkToClose( IN PEPROCESS Process OPTIONAL,
  49                      IN PVOID Object,
  50                      IN HANDLE Handle,
  51                      IN KPROCESSOR_MODE AccessMode)
  52 {
  53     WIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters;
  54
  55     Parameters.Process = Process;
  56     Parameters.Object = Object;
  57     Parameters.Handle = Handle;
  58     Parameters.PreviousMode = AccessMode;
  59
  60     return NT_SUCCESS(ExpDesktopObjectOkToClose(&Parameters));
  61 }
  62
  63 BOOLEAN
  64 NTAPI
  65 ExpWindowStationOkToClose( IN PEPROCESS Process OPTIONAL,
  66                      IN PVOID Object,
  67                      IN HANDLE Handle,
  68                      IN KPROCESSOR_MODE AccessMode)
  69 {
  70     WIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters;
  71
  72     Parameters.Process = Process;
  73     Parameters.Object = Object;
  74     Parameters.Handle = Handle;
  75     Parameters.PreviousMode = AccessMode;
  76
  77     return NT_SUCCESS(ExpWindowStationObjectOkToClose(&Parameters));
  78 }
  79
  80 VOID
  81 NTAPI
  82 ExpWinStaObjectDelete(PVOID DeletedObject)
  83 {
  84     WIN32_DELETEMETHOD_PARAMETERS Parameters;
  85
  86     /* Fill out the callback structure */
  87     Parameters.Object = DeletedObject;
  88
  89     /* Call the Registered Callback */
  90     ExpWindowStationObjectDelete(&Parameters);
  91 }
  92
  93 NTSTATUS
  94 NTAPI
  95 ExpWinStaObjectParse(IN PVOID ParseObject,
  96                      IN PVOID ObjectType,
  97                      IN OUT PACCESS_STATE AccessState,
  98                      IN KPROCESSOR_MODE AccessMode,
  99                      IN ULONG Attributes,
 100                      IN OUT PUNICODE_STRING CompleteName,
 101                      IN OUT PUNICODE_STRING RemainingName,
 102                      IN OUT PVOID Context OPTIONAL,
 103                      IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
 104                      OUT PVOID *Object)
 105 {
 106     WIN32_PARSEMETHOD_PARAMETERS Parameters;
 107
 108     /* Fill out the callback structure */
 109     Parameters.ParseObject = ParseObject;
 110     Parameters.ObjectType = ObjectType;
 111     Parameters.AccessState = AccessState;
 112     Parameters.AccessMode = AccessMode;
 113     Parameters.Attributes = Attributes;
 114     Parameters.CompleteName = CompleteName;
 115     Parameters.RemainingName = RemainingName;
 116     Parameters.Context = Context;
 117     Parameters.SecurityQos = SecurityQos;
 118     Parameters.Object = Object;
 119
 120     /* Call the Registered Callback */
 121     return ExpWindowStationObjectParse(&Parameters);
 122 }
 123 VOID
 124 NTAPI
 125 ExpDesktopDelete(PVOID DeletedObject)
 126 {
 127     WIN32_DELETEMETHOD_PARAMETERS Parameters;
 128
 129     /* Fill out the callback structure */
 130     Parameters.Object = DeletedObject;
 131
 132     /* Call the Registered Callback */
 133     ExpDesktopObjectDelete(&Parameters);
 134 }
 135
 136 VOID
 137 INIT_FUNCTION
 138 NTAPI
 139 ExpWin32kInit(VOID)
 140 {
 141     OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
 142     UNICODE_STRING Name;
 143     DPRINT("Creating Win32 Object Types\n");
 144
 145     /* Create the window station Object Type */
 146     RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
 147     RtlInitUnicodeString(&Name, L"WindowStation");
 148     ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
 149     ObjectTypeInitializer.GenericMapping = ExpWindowStationMapping;
 150     ObjectTypeInitializer.PoolType = NonPagedPool;
 151     ObjectTypeInitializer.DeleteProcedure = ExpWinStaObjectDelete;
 152     ObjectTypeInitializer.ParseProcedure = ExpWinStaObjectParse;
 153     ObjectTypeInitializer.OkayToCloseProcedure = ExpWindowStationOkToClose;
 154     ObCreateObjectType(&Name,
 155                        &ObjectTypeInitializer,
 156                        NULL,
 157                        &ExWindowStationObjectType);
 158
 159     /* Create desktop object type */
 160     RtlInitUnicodeString(&Name, L"Desktop");
 161     ObjectTypeInitializer.GenericMapping = ExpDesktopMapping;
 162     ObjectTypeInitializer.DeleteProcedure = ExpDesktopDelete;
 163     ObjectTypeInitializer.ParseProcedure = NULL;
 164     ObjectTypeInitializer.OkayToCloseProcedure = ExpDesktopOkToClose;
 165     ObCreateObjectType(&Name,
 166                        &ObjectTypeInitializer,
 167                        NULL,
 168                        &ExDesktopObjectType);
 169 }
 170
 171 /* EOF */