reactos/ntoskrnl/lpc/port.c

   1 /* $Id: port.c,v 1.3 2000/10/22 16:36:51 ekohl Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/lpc/port.c
   6  * PURPOSE:         Communication mechanism
   7  * PROGRAMMER:      David Welch (welch@cwcom.net)
   8  * UPDATE HISTORY:
   9  *                  Created 22/05/98
  10  *
  11  *      2000-06-04 (ea)
  12  *              ntoskrnl/nt/port.c moved in ntoskrnl/lpc/port.c
  13  */
  14
  15 /* INCLUDES *****************************************************************/
  16
  17 #include <limits.h>
  18
  19 #include <ddk/ntddk.h>
  20 #include <internal/ob.h>
  21 #include <internal/port.h>
  22 #include <internal/dbg.h>
  23
  24 #define NDEBUG
  25 #include <internal/debug.h>
  26
  27
  28 /* GLOBALS *******************************************************************/
  29
  30 POBJECT_TYPE    ExPortType = NULL;
  31 ULONG           EiNextLpcMessageId = 0;
  32
  33 /* FUNCTIONS *****************************************************************/
  34
  35
  36 NTSTATUS NiInitPort (VOID)
  37 {
  38    ExPortType = ExAllocatePool(NonPagedPool,sizeof(OBJECT_TYPE));
  39
  40    RtlInitUnicodeString(&ExPortType->TypeName,L"Port");
  41
  42    ExPortType->MaxObjects = ULONG_MAX;
  43    ExPortType->MaxHandles = ULONG_MAX;
  44    ExPortType->TotalObjects = 0;
  45    ExPortType->TotalHandles = 0;
  46    ExPortType->PagedPoolCharge = 0;
  47    ExPortType->NonpagedPoolCharge = sizeof(EPORT);
  48    ExPortType->Dump = NULL;
  49    ExPortType->Open = NULL;
  50    ExPortType->Close = NiClosePort;
  51    ExPortType->Delete = NiDeletePort;
  52    ExPortType->Parse = NULL;
  53    ExPortType->Security = NULL;
  54    ExPortType->QueryName = NULL;
  55    ExPortType->OkayToClose = NULL;
  56    ExPortType->Create = NiCreatePort;
  57
  58    EiNextLpcMessageId = 0;
  59
  60    return(STATUS_SUCCESS);
  61 }
  62
  63
  64 /**********************************************************************
  65  * NAME                                                 INTERNAL
  66  *      NiInitializePort
  67  *
  68  * DESCRIPTION
  69  *      Initialize the EPORT object attributes. The Port
  70  *      object enters the inactive state.
  71  *
  72  * ARGUMENTS
  73  *      Port    Pointer to an EPORT object to initialize.
  74  *
  75  * RETURN VALUE
  76  *      STATUS_SUCCESS if initialization succedeed. An error code
  77  *      otherwise.
  78  */
  79 NTSTATUS
  80 STDCALL
  81 NiInitializePort (
  82         IN OUT  PEPORT  Port
  83         )
  84 {
  85         memset (Port, 0, sizeof(EPORT));
  86         KeInitializeSpinLock (& Port->Lock);
  87         KeInitializeEvent (& Port->Event, SynchronizationEvent, FALSE);
  88         Port->OtherPort = NULL;
  89         Port->QueueLength = 0;
  90         Port->ConnectQueueLength = 0;
  91         Port->State = EPORT_INACTIVE;
  92         InitializeListHead (& Port->QueueListHead);
  93         InitializeListHead (& Port->ConnectQueueListHead);
  94
  95         return (STATUS_SUCCESS);
  96 }
  97
  98
  99 /* MISCELLANEA SYSTEM SERVICES */
 100
 101
 102 /**********************************************************************
 103  * NAME                                                 SYSTEM
 104  *      NtImpersonateClientOfPort@8
 105  *
 106  * DESCRIPTION
 107  *
 108  * ARGUMENTS
 109  *      PortHandle,
 110  *      ClientMessage
 111  *
 112  * RETURN VALUE
 113  *
 114  */
 115 NTSTATUS
 116 STDCALL
 117 NtImpersonateClientOfPort (
 118         HANDLE          PortHandle,
 119         PLPC_MESSAGE    ClientMessage
 120         )
 121 {
 122         UNIMPLEMENTED;
 123 }
 124
 125
 126
 127 /* EOF */