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 BOOLEAN
  35 NTAPI
  36 LpcInitSystem(VOID)
  37 {
  38     OBJECT_TYPE_INITIALIZER ObjectTypeInitializer;
  39     UNICODE_STRING Name;
  40
  41     /* Setup the LPC Lock */
  42     KeInitializeGuardedMutex(&LpcpLock);
  43
  44     /* Create the Port Object Type */
  45     RtlZeroMemory(&ObjectTypeInitializer, sizeof(ObjectTypeInitializer));
  46     RtlInitUnicodeString(&Name, L"Port");
  47     ObjectTypeInitializer.Length = sizeof(ObjectTypeInitializer);
  48     ObjectTypeInitializer.DefaultNonPagedPoolCharge = sizeof(LPCP_PORT_OBJECT);
  49     ObjectTypeInitializer.DefaultPagedPoolCharge = sizeof(LPCP_NONPAGED_PORT_QUEUE);
  50     ObjectTypeInitializer.GenericMapping = LpcpPortMapping;
  51     ObjectTypeInitializer.PoolType = PagedPool;
  52     ObjectTypeInitializer.UseDefaultObject = TRUE;
  53     ObjectTypeInitializer.CloseProcedure = LpcpClosePort;
  54     ObjectTypeInitializer.DeleteProcedure = LpcpDeletePort;
  55     ObjectTypeInitializer.ValidAccessMask = PORT_ALL_ACCESS;
  56     ObCreateObjectType(&Name,
  57                        &ObjectTypeInitializer,
  58                        NULL,
  59                        &LpcPortObjectType);
  60
  61     /* Allocate the LPC lookaside list */
  62     LpcpMaxMessageSize = LPCP_MAX_MESSAGE_SIZE;
  63     ExInitializePagedLookasideList(&LpcpMessagesLookaside,
  64                                    NULL,
  65                                    NULL,
  66                                    0,
  67                                    LpcpMaxMessageSize,
  68                                    'McpL',
  69                                    32);
  70
  71     /* We're done */
  72     return TRUE;
  73 }
  74
  75 /* PUBLIC FUNCTIONS **********************************************************/
  76
  77 NTSTATUS
  78 NTAPI
  79 NtImpersonateClientOfPort(IN HANDLE PortHandle,
  80                           IN PPORT_MESSAGE ClientMessage)
  81 {
  82     UNIMPLEMENTED;
  83     return STATUS_NOT_IMPLEMENTED;
  84 }
  85
  86 NTSTATUS
  87 NTAPI
  88 NtQueryPortInformationProcess(VOID)
  89 {
  90     /* This is all this function does */
  91     return STATUS_UNSUCCESSFUL;
  92 }
  93
  94 NTSTATUS
  95 NTAPI
  96 NtQueryInformationPort(IN HANDLE PortHandle,
  97                        IN PORT_INFORMATION_CLASS PortInformationClass,
  98                        OUT PVOID PortInformation,
  99                        IN ULONG PortInformationLength,
 100                        OUT PULONG ReturnLength)
 101 {
 102     UNIMPLEMENTED;
 103     return STATUS_NOT_IMPLEMENTED;
 104 }
 105
 106 /* EOF */