reactos/ntoskrnl/lpc/port.c

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            ntoskrnl/lpc/port.c
   5  * PURPOSE:         Local Procedure Call: Port Management
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include <ntoskrnl.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /* GLOBALS *******************************************************************/
  16
  17 POBJECT_TYPE LpcPortObjectType;
  18 ULONG LpcpMaxMessageSize;
  19 PAGED_LOOKASIDE_LIST LpcpMessagesLookaside;
  20 KGUARDED_MUTEX LpcpLock;
  21 ULONG LpcpTraceLevel = 0;
  22 ULONG LpcpNextMessageId = 1, LpcpNextCallbackId = 1;
  23
  24 static GENERIC_MAPPING LpcpPortMapping =
  25 {
  26     STANDARD_RIGHTS_READ,
  27     STANDARD_RIGHTS_WRITE,
  28     0,
  29     PORT_ALL_ACCESS
  30 };
  31
  32 /* PRIVATE FUNCTIONS *********************************************************/
  33
  34 NTSTATUS
  35 INIT_FUNCTION
  36 NTAPI
  37 LpcpInitSystem(VOID)
  38 {
  39     OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
  40     UNICODE_STRING Name;
  41
  42     /* Setup the LPC Lock */
  43     KeInitializeGuardedMutex(&LpcpLock);
  44
  45     /* Create the Port Object Type */
  46     RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
  47     RtlInitUnicodeString(&Name, L"Port");
  48     ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
  49     ObjectTypeInitializer.DefaultNonPagedPoolCharge = sizeof(LPCP_PORT_OBJECT);
  50     ObjectTypeInitializer.DefaultPagedPoolCharge = sizeof(LPCP_NONPAGED_PORT_QUEUE);
  51     ObjectTypeInitializer.GenericMapping = LpcpPortMapping;
  52     ObjectTypeInitializer.PoolType = PagedPool;
  53     ObjectTypeInitializer.UseDefaultObject = TRUE;
  54     ObjectTypeInitializer.CloseProcedure = LpcpClosePort;
  55     ObjectTypeInitializer.DeleteProcedure = LpcpDeletePort;
  56     ObjectTypeInitializer.ValidAccessMask = PORT_ALL_ACCESS;
  57     ObjectTypeInitializer.MaintainTypeList = TRUE;
  58     ObCreateObjectType(&Name,
  59                        &ObjectTypeInitializer,
  60                        NULL,
  61                        &LpcPortObjectType);
  62
  63     /* Allocate the LPC lookaside list */
  64     LpcpMaxMessageSize = LPCP_MAX_MESSAGE_SIZE;
  65     ExInitializePagedLookasideList(&LpcpMessagesLookaside,
  66                                    NULL,
  67                                    NULL,
  68                                    0,
  69                                    LpcpMaxMessageSize,
  70                                    TAG('L', 'p', 'c', 'M'),
  71                                    32);
  72
  73     /* We're done */
  74     return STATUS_SUCCESS;
  75 }
  76
  77 /* PUBLIC FUNCTIONS **********************************************************/
  78
  79 NTSTATUS
  80 NTAPI
  81 NtImpersonateClientOfPort(IN HANDLE PortHandle,
  82                           IN PPORT_MESSAGE ClientMessage)
  83 {
  84     UNIMPLEMENTED;
  85     return STATUS_NOT_IMPLEMENTED;
  86 }
  87
  88 NTSTATUS
  89 NTAPI
  90 NtQueryPortInformationProcess(VOID)
  91 {
  92     /* This is all this function does */
  93     return STATUS_UNSUCCESSFUL;
  94 }
  95
  96 NTSTATUS
  97 NTAPI
  98 NtQueryInformationPort(IN HANDLE PortHandle,
  99                        IN PORT_INFORMATION_CLASS PortInformationClass,
 100                        OUT PVOID PortInformation,
 101                        IN ULONG PortInformationLength,
 102                        OUT PULONG ReturnLength)
 103 {
 104     UNIMPLEMENTED;
 105     return STATUS_NOT_IMPLEMENTED;
 106 }
 107
 108 /* EOF */