lpcinit.c File Reference

#include "lpcp.h"

Go to the source code of this file.

Functions
BOOLEAN	LpcInitSystem (VOID)
char *	LpcpGetCreatorName (PLPCP_PORT_OBJECT PortObject)
Variables
POBJECT_TYPE	LpcPortObjectType
POBJECT_TYPE	LpcWaitablePortObjectType
GENERIC_MAPPING	LpcpPortMapping
LPC_MUTEX	LpcpLock

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Function Documentation

BOOLEAN LpcInitSystem (  VOID   )

Definition at line 76 of file lpcinit.c. References FALSE, L, LPCP_ZONE_ALIGNMENT, LPCP_ZONE_ALIGNMENT_MASK, LPCP_ZONE_MAX_POOL_USAGE, LpcpClosePort(), LpcpDeletePort(), LpcpInitializeLpcpLock, LpcpInitializePortZone(), LpcpNextCallbackId, LpcpNextMessageId, LpcPortObjectType, LpcpPortMapping, LpcWaitablePortObjectType, NonPagedPool, NT_SUCCESS, NTSTATUS(), NULL, ObCreateObjectType(), PAGE_SIZE, PagedPool, RtlInitUnicodeString(), Status, and TRUE. : This function performs the system initialization for the LPC package. LPC stands for Local Inter-Process Communication. Arguments: None. Return Value: TRUE if successful and FALSE if an error occurred. The following errors can occur: - insufficient memory --*/ { OBJECT_TYPE_INITIALIZER ObjectTypeInitializer; UNICODE_STRING PortTypeName; ULONG ZoneElementSize; NTSTATUS Status; // // Initialize our global lpc lock // LpcpInitializeLpcpLock(); // // Create the object type for the port object // RtlInitUnicodeString( &PortTypeName, L"Port" ); RtlZeroMemory( &ObjectTypeInitializer, sizeof( ObjectTypeInitializer )); ObjectTypeInitializer.Length = sizeof( ObjectTypeInitializer ); ObjectTypeInitializer.GenericMapping = LpcpPortMapping; ObjectTypeInitializer.MaintainTypeList = TRUE; ObjectTypeInitializer.PoolType = PagedPool; ObjectTypeInitializer.DefaultPagedPoolCharge = sizeof( LPCP_PORT_OBJECT ); ObjectTypeInitializer.DefaultNonPagedPoolCharge = sizeof( LPCP_NONPAGED_PORT_QUEUE ); ObjectTypeInitializer.InvalidAttributes = OBJ_VALID_ATTRIBUTES ^ PORT_VALID_OBJECT_ATTRIBUTES; ObjectTypeInitializer.ValidAccessMask = PORT_ALL_ACCESS; ObjectTypeInitializer.CloseProcedure = LpcpClosePort; ObjectTypeInitializer.DeleteProcedure = LpcpDeletePort; ObjectTypeInitializer.UseDefaultObject = TRUE ; ObCreateObjectType( &PortTypeName, &ObjectTypeInitializer, (PSECURITY_DESCRIPTOR)NULL, &LpcPortObjectType ); // // Create the object type for the waitable port object // RtlInitUnicodeString( &PortTypeName, L"WaitablePort" ); ObjectTypeInitializer.PoolType = NonPagedPool ; ObjectTypeInitializer.UseDefaultObject = FALSE ; ObCreateObjectType( &PortTypeName, &ObjectTypeInitializer, (PSECURITY_DESCRIPTOR)NULL, &LpcWaitablePortObjectType ); // // Initialize the lpc message and callback id counters // LpcpNextMessageId = 1; LpcpNextCallbackId = 1; // // Initialize the lpc port zone. Each element can contain a max // message, plus an LPCP message structure, plus an LPCP connection // message // ZoneElementSize = PORT_MAXIMUM_MESSAGE_LENGTH + sizeof( LPCP_MESSAGE ) + sizeof( LPCP_CONNECTION_MESSAGE ); // // Round up the size to the next 16 byte alignment // ZoneElementSize = (ZoneElementSize + LPCP_ZONE_ALIGNMENT - 1) & LPCP_ZONE_ALIGNMENT_MASK; // // Initialize the zone // Status = LpcpInitializePortZone( ZoneElementSize, PAGE_SIZE, LPCP_ZONE_MAX_POOL_USAGE ); if (!NT_SUCCESS( Status )) { return( FALSE ); } return( TRUE ); }

char* LpcpGetCreatorName (  PLPCP_PORT_OBJECT  PortObject  )

Definition at line 193 of file lpcinit.c. References _LPCP_PORT_OBJECT::Creator, _EPROCESS::ImageFileName, NT_SUCCESS, NTSTATUS(), PsLookupProcessByProcessId(), and Status. Referenced by LpcRequestPort(), LpcRequestWaitReplyPort(), NtReplyWaitReceivePort(), NtReplyWaitReceivePortEx(), NtRequestPort(), and NtRequestWaitReplyPort(). : This routine returns the name of the process that created the specified port object Arguments: PortObject - Supplies the port object being queried Return Value: char * - The image name of the process that created the port process --*/ { NTSTATUS Status; PEPROCESS Process; // // First find the process that created the port object // Status = PsLookupProcessByProcessId( PortObject->Creator.UniqueProcess, &Process ); // // If we were able to get the process then return the name of the process // to our caller // if (NT_SUCCESS( Status )) { return Process->ImageFileName; } else { // // Otherwise tell our caller we don't know the name // return "Unknown"; } }

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Variable Documentation

LPC_MUTEX LpcpLock

Definition at line 45 of file lpcinit.c.

POBJECT_TYPE LpcPortObjectType

Definition at line 27 of file lpcinit.c. Referenced by IopConnectLinkTrackingPort(), LpcInitSystem(), LpcpCreatePort(), NtAcceptConnectPort(), NtQueryInformationPort(), NtRegisterThreadTerminatePort(), NtSecureConnectPort(), NtSetDefaultHardErrorPort(), NtSetInformationProcess(), ObfDereferenceObject(), and PspCreateProcess().

GENERIC_MAPPING LpcpPortMapping

Initial value: { READ_CONTROL | PORT_CONNECT, DELETE | PORT_CONNECT, 0, PORT_ALL_ACCESS } Definition at line 34 of file lpcinit.c. Referenced by LpcInitSystem().

POBJECT_TYPE LpcWaitablePortObjectType

Definition at line 28 of file lpcinit.c. Referenced by LpcInitSystem(), LpcpCreatePort(), NtReplyWaitReceivePort(), NtReplyWaitReceivePortEx(), NtSecureConnectPort(), and ObfDereferenceObject().

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