reactos/ntoskrnl/lpc/port.c

   1 /* $Id: port.c,v 1.10 2002/09/07 15:12:58 chorns 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 <ntoskrnl.h>
  18
  19 #define NDEBUG
  20 #include <internal/debug.h>
  21
  22
  23 /* GLOBALS *******************************************************************/
  24
  25 POBJECT_TYPE    ExPortType = NULL;
  26 ULONG           EiNextLpcMessageId = 0;
  27
  28 static GENERIC_MAPPING ExpPortMapping = {
  29         STANDARD_RIGHTS_READ,
  30         STANDARD_RIGHTS_WRITE,
  31         0,
  32         PORT_ALL_ACCESS};
  33
  34 /* FUNCTIONS *****************************************************************/
  35
  36
  37 NTSTATUS NiInitPort (VOID)
  38 {
  39    ExPortType = ExAllocatePool(NonPagedPool,sizeof(OBJECT_TYPE));
  40
  41    RtlInitUnicodeStringFromLiteral(&ExPortType->TypeName,L"Port");
  42
  43    ExPortType->Tag = TAG('L', 'P', 'R', 'T');
  44    ExPortType->MaxObjects = ULONG_MAX;
  45    ExPortType->MaxHandles = ULONG_MAX;
  46    ExPortType->TotalObjects = 0;
  47    ExPortType->TotalHandles = 0;
  48    ExPortType->PagedPoolCharge = 0;
  49    ExPortType->NonpagedPoolCharge = sizeof(EPORT);
  50    ExPortType->Mapping = &ExpPortMapping;
  51    ExPortType->Dump = NULL;
  52    ExPortType->Open = NULL;
  53    ExPortType->Close = NiClosePort;
  54    ExPortType->Delete = NiDeletePort;
  55    ExPortType->Parse = NULL;
  56    ExPortType->Security = NULL;
  57    ExPortType->QueryName = NULL;
  58    ExPortType->OkayToClose = NULL;
  59    ExPortType->Create = NiCreatePort;
  60    ExPortType->DuplicationNotify = NULL;
  61
  62    EiNextLpcMessageId = 0;
  63
  64    return(STATUS_SUCCESS);
  65 }
  66
  67
  68 /**********************************************************************
  69  * NAME                                                 INTERNAL
  70  *      NiInitializePort
  71  *
  72  * DESCRIPTION
  73  *      Initialize the EPORT object attributes. The Port
  74  *      object enters the inactive state.
  75  *
  76  * ARGUMENTS
  77  *      Port    Pointer to an EPORT object to initialize.
  78  *
  79  * RETURN VALUE
  80  *      STATUS_SUCCESS if initialization succedeed. An error code
  81  *      otherwise.
  82  */
  83 NTSTATUS STDCALL
  84 NiInitializePort (IN OUT        PEPORT  Port)
  85 {
  86   memset (Port, 0, sizeof(EPORT));
  87   KeInitializeSpinLock (& Port->Lock);
  88   KeInitializeSemaphore( &Port->Semaphore, 0, LONG_MAX );
  89   Port->OtherPort = NULL;
  90   Port->QueueLength = 0;
  91   Port->ConnectQueueLength = 0;
  92   Port->State = EPORT_INACTIVE;
  93   InitializeListHead (& Port->QueueListHead);
  94   InitializeListHead (& Port->ConnectQueueListHead);
  95
  96   return (STATUS_SUCCESS);
  97 }
  98
  99
 100 /* MISCELLANEA SYSTEM SERVICES */
 101
 102
 103 /**********************************************************************
 104  * NAME                                                 SYSTEM
 105  *      NtImpersonateClientOfPort@8
 106  *
 107  * DESCRIPTION
 108  *
 109  * ARGUMENTS
 110  *      PortHandle,
 111  *      ClientMessage
 112  *
 113  * RETURN VALUE
 114  *
 115  */
 116 NTSTATUS STDCALL
 117 NtImpersonateClientOfPort (HANDLE               PortHandle,
 118                            PLPC_MESSAGE ClientMessage)
 119 {
 120   UNIMPLEMENTED;
 121 }
 122
 123
 124
 125 /* EOF */