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, LpcWaitablePortObjectType;
  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     READ_CONTROL | PORT_CONNECT,
  27     DELETE | PORT_CONNECT,
  28     0,
  29     PORT_ALL_ACCESS
  30 };
  31
  32 /* PRIVATE FUNCTIONS *********************************************************/
  33
  34 BOOLEAN
  35 NTAPI
  36 INIT_FUNCTION
  37 LpcInitSystem(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_NONPAGED_PORT_QUEUE);
  50     ObjectTypeInitializer.DefaultPagedPoolCharge = FIELD_OFFSET(LPCP_PORT_OBJECT, WaitEvent);
  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.InvalidAttributes = OBJ_VALID_ATTRIBUTES & ~OBJ_CASE_INSENSITIVE;
  58     ObCreateObjectType(&Name,
  59                        &ObjectTypeInitializer,
  60                        NULL,
  61                        &LpcPortObjectType);
  62
  63     RtlInitUnicodeString(&Name, L"WaitablePort");
  64     ObjectTypeInitializer.PoolType = NonPagedPool;
  65     ObjectTypeInitializer.DefaultNonPagedPoolCharge += sizeof(LPCP_PORT_OBJECT);
  66     ObjectTypeInitializer.DefaultPagedPoolCharge = 0;
  67     ObjectTypeInitializer.UseDefaultObject = FALSE;
  68     ObCreateObjectType(&Name,
  69                        &ObjectTypeInitializer,
  70                        NULL,
  71                        &LpcWaitablePortObjectType);
  72
  73     /* Allocate the LPC lookaside list */
  74     LpcpMaxMessageSize = LPCP_MAX_MESSAGE_SIZE;
  75     ExInitializePagedLookasideList(&LpcpMessagesLookaside,
  76                                    NULL,
  77                                    NULL,
  78                                    0,
  79                                    LpcpMaxMessageSize,
  80                                    'McpL',
  81                                    32);
  82
  83     /* We're done */
  84     return TRUE;
  85 }
  86
  87 /* PUBLIC FUNCTIONS **********************************************************/
  88
  89 NTSTATUS
  90 NTAPI
  91 NtImpersonateClientOfPort(IN HANDLE PortHandle,
  92                           IN PPORT_MESSAGE ClientMessage)
  93 {
  94     UNIMPLEMENTED;
  95     return STATUS_NOT_IMPLEMENTED;
  96 }
  97
  98 NTSTATUS
  99 NTAPI
 100 NtQueryPortInformationProcess(VOID)
 101 {
 102     /* This is all this function does */
 103     return STATUS_UNSUCCESSFUL;
 104 }
 105
 106 NTSTATUS
 107 NTAPI
 108 NtQueryInformationPort(IN HANDLE PortHandle,
 109                        IN PORT_INFORMATION_CLASS PortInformationClass,
 110                        OUT PVOID PortInformation,
 111                        IN ULONG PortInformationLength,
 112                        OUT PULONG ReturnLength)
 113 {
 114     UNIMPLEMENTED;
 115     return STATUS_NOT_IMPLEMENTED;
 116 }
 117
 118 /* EOF */