reactos/ntoskrnl/lpc/port.c

   1 /* $Id: port.c,v 1.12 2003/07/10 20:42:53 royce 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 #include <internal/pool.h>
  24
  25 #define NDEBUG
  26 #include <internal/debug.h>
  27
  28
  29 /* GLOBALS *******************************************************************/
  30
  31 POBJECT_TYPE    ExPortType = NULL;
  32 ULONG           EiNextLpcMessageId = 0;
  33
  34 static GENERIC_MAPPING ExpPortMapping = {
  35         STANDARD_RIGHTS_READ,
  36         STANDARD_RIGHTS_WRITE,
  37         0,
  38         PORT_ALL_ACCESS};
  39
  40 /* FUNCTIONS *****************************************************************/
  41
  42
  43 NTSTATUS NiInitPort (VOID)
  44 {
  45    ExPortType = ExAllocatePool(NonPagedPool,sizeof(OBJECT_TYPE));
  46
  47    RtlInitUnicodeStringFromLiteral(&ExPortType->TypeName,L"Port");
  48
  49    ExPortType->Tag = TAG('L', 'P', 'R', 'T');
  50    ExPortType->MaxObjects = ULONG_MAX;
  51    ExPortType->MaxHandles = ULONG_MAX;
  52    ExPortType->TotalObjects = 0;
  53    ExPortType->TotalHandles = 0;
  54    ExPortType->PagedPoolCharge = 0;
  55    ExPortType->NonpagedPoolCharge = sizeof(EPORT);
  56    ExPortType->Mapping = &ExpPortMapping;
  57    ExPortType->Dump = NULL;
  58    ExPortType->Open = NULL;
  59    ExPortType->Close = NiClosePort;
  60    ExPortType->Delete = NiDeletePort;
  61    ExPortType->Parse = NULL;
  62    ExPortType->Security = NULL;
  63    ExPortType->QueryName = NULL;
  64    ExPortType->OkayToClose = NULL;
  65    ExPortType->Create = NiCreatePort;
  66    ExPortType->DuplicationNotify = NULL;
  67
  68    EiNextLpcMessageId = 0;
  69
  70    return(STATUS_SUCCESS);
  71 }
  72
  73
  74 /**********************************************************************
  75  * NAME                                                 INTERNAL
  76  *      NiInitializePort
  77  *
  78  * DESCRIPTION
  79  *      Initialize the EPORT object attributes. The Port
  80  *      object enters the inactive state.
  81  *
  82  * ARGUMENTS
  83  *      Port    Pointer to an EPORT object to initialize.
  84  *
  85  * RETURN VALUE
  86  *      STATUS_SUCCESS if initialization succedeed. An error code
  87  *      otherwise.
  88  *
  89  * @implemented
  90  */
  91 NTSTATUS STDCALL
  92 NiInitializePort (IN OUT        PEPORT  Port)
  93 {
  94   memset (Port, 0, sizeof(EPORT));
  95   KeInitializeSpinLock (& Port->Lock);
  96   KeInitializeSemaphore( &Port->Semaphore, 0, LONG_MAX );
  97   Port->OtherPort = NULL;
  98   Port->QueueLength = 0;
  99   Port->ConnectQueueLength = 0;
 100   Port->State = EPORT_INACTIVE;
 101   InitializeListHead (& Port->QueueListHead);
 102   InitializeListHead (& Port->ConnectQueueListHead);
 103
 104   return (STATUS_SUCCESS);
 105 }
 106
 107
 108 /* MISCELLANEA SYSTEM SERVICES */
 109
 110
 111 /**********************************************************************
 112  * NAME                                                 SYSTEM
 113  *      NtImpersonateClientOfPort@8
 114  *
 115  * DESCRIPTION
 116  *
 117  * ARGUMENTS
 118  *      PortHandle,
 119  *      ClientMessage
 120  *
 121  * RETURN VALUE
 122  *
 123  * @unimplemented
 124  */
 125 NTSTATUS STDCALL
 126 NtImpersonateClientOfPort (HANDLE               PortHandle,
 127                            PLPC_MESSAGE ClientMessage)
 128 {
 129   UNIMPLEMENTED;
 130 }
 131
 132
 133
 134 /* EOF */