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 PKWIN32_OPENMETHOD_CALLOUT ExpDesktopObjectOpen = NULL;
  44 PKWIN32_CLOSEMETHOD_CALLOUT ExpDesktopObjectClose = NULL;
  45
  46 /* FUNCTIONS ****************************************************************/
  47
  48 BOOLEAN
  49 NTAPI
  50 ExpDesktopOkToClose( IN PEPROCESS Process OPTIONAL,
  51                      IN PVOID Object,
  52                      IN HANDLE Handle,
  53                      IN KPROCESSOR_MODE AccessMode)
  54 {
  55     WIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters;
  56
  57     Parameters.Process = Process;
  58     Parameters.Object = Object;
  59     Parameters.Handle = Handle;
  60     Parameters.PreviousMode = AccessMode;
  61
  62     return NT_SUCCESS(ExpDesktopObjectOkToClose(&Parameters));
  63 }
  64
  65 BOOLEAN
  66 NTAPI
  67 ExpWindowStationOkToClose( IN PEPROCESS Process OPTIONAL,
  68                      IN PVOID Object,
  69                      IN HANDLE Handle,
  70                      IN KPROCESSOR_MODE AccessMode)
  71 {
  72     WIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters;
  73
  74     Parameters.Process = Process;
  75     Parameters.Object = Object;
  76     Parameters.Handle = Handle;
  77     Parameters.PreviousMode = AccessMode;
  78
  79     return NT_SUCCESS(ExpWindowStationObjectOkToClose(&Parameters));
  80 }
  81
  82 VOID
  83 NTAPI
  84 ExpWinStaObjectDelete(PVOID DeletedObject)
  85 {
  86     WIN32_DELETEMETHOD_PARAMETERS Parameters;
  87
  88     /* Fill out the callback structure */
  89     Parameters.Object = DeletedObject;
  90
  91     /* Call the Registered Callback */
  92     ExpWindowStationObjectDelete(&Parameters);
  93 }
  94
  95 NTSTATUS
  96 NTAPI
  97 ExpWinStaObjectParse(IN PVOID ParseObject,
  98                      IN PVOID ObjectType,
  99                      IN OUT PACCESS_STATE AccessState,
 100                      IN KPROCESSOR_MODE AccessMode,
 101                      IN ULONG Attributes,
 102                      IN OUT PUNICODE_STRING CompleteName,
 103                      IN OUT PUNICODE_STRING RemainingName,
 104                      IN OUT PVOID Context OPTIONAL,
 105                      IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
 106                      OUT PVOID *Object)
 107 {
 108     WIN32_PARSEMETHOD_PARAMETERS Parameters;
 109
 110     /* Fill out the callback structure */
 111     Parameters.ParseObject = ParseObject;
 112     Parameters.ObjectType = ObjectType;
 113     Parameters.AccessState = AccessState;
 114     Parameters.AccessMode = AccessMode;
 115     Parameters.Attributes = Attributes;
 116     Parameters.CompleteName = CompleteName;
 117     Parameters.RemainingName = RemainingName;
 118     Parameters.Context = Context;
 119     Parameters.SecurityQos = SecurityQos;
 120     Parameters.Object = Object;
 121
 122     /* Call the Registered Callback */
 123     return ExpWindowStationObjectParse(&Parameters);
 124 }
 125 VOID
 126 NTAPI
 127 ExpDesktopDelete(PVOID DeletedObject)
 128 {
 129     WIN32_DELETEMETHOD_PARAMETERS Parameters;
 130
 131     /* Fill out the callback structure */
 132     Parameters.Object = DeletedObject;
 133
 134     /* Call the Registered Callback */
 135     ExpDesktopObjectDelete(&Parameters);
 136 }
 137
 138 NTSTATUS
 139 NTAPI
 140 ExpDesktopOpen(IN OB_OPEN_REASON Reason,
 141                IN PEPROCESS Process OPTIONAL,
 142                IN PVOID ObjectBody,
 143                IN ACCESS_MASK GrantedAccess,
 144                IN ULONG HandleCount)
 145 {
 146     WIN32_OPENMETHOD_PARAMETERS Parameters;
 147
 148     Parameters.OpenReason = Reason;
 149     Parameters.Process = Process;
 150     Parameters.Object = ObjectBody;
 151     Parameters.GrantedAccess = GrantedAccess;
 152     Parameters.HandleCount = HandleCount;
 153
 154     return ExpDesktopObjectOpen(&Parameters);
 155 }
 156
 157 VOID
 158 NTAPI
 159 ExpDesktopClose(IN PEPROCESS Process OPTIONAL,
 160                 IN PVOID Object,
 161                 IN ACCESS_MASK GrantedAccess,
 162                 IN ULONG ProcessHandleCount,
 163                 IN ULONG SystemHandleCount)
 164 {
 165     WIN32_CLOSEMETHOD_PARAMETERS Parameters;
 166
 167     Parameters.Process = Process;
 168     Parameters.Object = Object;
 169     Parameters.AccessMask = GrantedAccess;
 170     Parameters.ProcessHandleCount = ProcessHandleCount;
 171     Parameters.SystemHandleCount = SystemHandleCount;
 172
 173     ExpDesktopObjectClose(&Parameters);
 174 }
 175
 176 BOOLEAN
 177 INIT_FUNCTION
 178 NTAPI
 179 ExpWin32kInit(VOID)
 180 {
 181     OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
 182     UNICODE_STRING Name;
 183     NTSTATUS Status;
 184     DPRINT("Creating Win32 Object Types\n");
 185
 186     /* Create the window station Object Type */
 187     RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
 188     RtlInitUnicodeString(&Name, L"WindowStation");
 189     ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
 190     ObjectTypeInitializer.GenericMapping = ExpWindowStationMapping;
 191     ObjectTypeInitializer.PoolType = NonPagedPool;
 192     ObjectTypeInitializer.DeleteProcedure = ExpWinStaObjectDelete;
 193     ObjectTypeInitializer.ParseProcedure = ExpWinStaObjectParse;
 194     ObjectTypeInitializer.OkayToCloseProcedure = ExpWindowStationOkToClose;
 195     ObjectTypeInitializer.SecurityRequired = TRUE;
 196     ObjectTypeInitializer.InvalidAttributes = OBJ_OPENLINK |
 197                                               OBJ_PERMANENT |
 198                                               OBJ_EXCLUSIVE;
 199     ObjectTypeInitializer.ValidAccessMask = STANDARD_RIGHTS_REQUIRED;
 200     Status = ObCreateObjectType(&Name,
 201                                 &ObjectTypeInitializer,
 202                                 NULL,
 203                                 &ExWindowStationObjectType);
 204     if (!NT_SUCCESS(Status)) return FALSE;
 205
 206     /* Create desktop object type */
 207     RtlInitUnicodeString(&Name, L"Desktop");
 208     ObjectTypeInitializer.GenericMapping = ExpDesktopMapping;
 209     ObjectTypeInitializer.DeleteProcedure = ExpDesktopDelete;
 210     ObjectTypeInitializer.ParseProcedure = NULL;
 211     ObjectTypeInitializer.OkayToCloseProcedure = ExpDesktopOkToClose;
 212     ObjectTypeInitializer.OpenProcedure = ExpDesktopOpen;
 213     ObjectTypeInitializer.CloseProcedure = ExpDesktopClose;
 214     ObCreateObjectType(&Name,
 215                        &ObjectTypeInitializer,
 216                        NULL,
 217                        &ExDesktopObjectType);
 218     if (!NT_SUCCESS(Status)) return FALSE;
 219
 220     return TRUE;
 221 }
 222
 223 /* EOF */