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800 lines
21 KiB
800 lines
21 KiB
/*++ BUILD Version: 0001 // Increment this if a change has global effects
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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perfras.c
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Abstract:
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This file implements the Extensible Objects for the Ras object type
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Created:
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Russ Blake 24 Feb 93
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Thomas J. Dimitri 28 May 93
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Revision History
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Ram Cherala 15 Feb 96
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Don't hard code the length of the instance name in
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CollectRasPerformanceData.
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PerfMon checks the actual instance name length to determine
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if the name is properly formatted, so compute it for each
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instance name.
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Patrick Y. Ng 12 Aug 93
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--*/
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//
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// Include Files
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//
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <ntddser.h>
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#include <windows.h>
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#include <string.h>
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#include <wcstr.h>
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#include <winperf.h>
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#include <malloc.h>
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#include <ntprfctr.h>
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#include "globals.h"
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#include "rasctrs.h" // error message definition
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#include "perfmsg.h"
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#include "perfutil.h"
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#include "dataras.h"
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#include "port.h"
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#include <rasman.h>
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#include <serial.h>
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#include <isdn.h>
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#include <raserror.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.h>
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//
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// References to constants which initialize the Object type definitions
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//
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DWORD dwOpenCount = 0; // count of "Open" threads
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BOOL bInitOK = FALSE; // true = DLL initialized OK
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CRITICAL_SECTION g_csPerf;
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//
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// Function Prototypes
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//
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// these are used to insure that the data collection functions
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// accessed by Perflib will have the correct calling format.
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//
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PM_OPEN_PROC OpenRasPerformanceData;
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PM_COLLECT_PROC CollectRasPerformanceData;
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PM_CLOSE_PROC CloseRasPerformanceData;
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BOOL
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FRasmanStarted()
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{
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SC_HANDLE schandle = NULL;
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SC_HANDLE svchandle = NULL;
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BOOL fRet = FALSE;
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//
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// Check to see if rasman service is started.
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// fail if it isn't - we don't want ras perf
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// to start rasman service.
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//
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schandle = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
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if(NULL != schandle)
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{
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svchandle = OpenService(schandle,
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"RASMAN",
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SERVICE_QUERY_STATUS);
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if(NULL != svchandle)
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{
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SERVICE_STATUS status;
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if( (QueryServiceStatus(svchandle, &status))
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&& (status.dwCurrentState == SERVICE_RUNNING))
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{
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fRet = TRUE;
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}
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CloseServiceHandle(svchandle);
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}
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CloseServiceHandle(schandle);
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}
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return fRet;
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}
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DWORD
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DwInitializeRasCounters()
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{
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LONG status;
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HKEY hKeyDriverPerf = NULL;
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DWORD size;
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DWORD type;
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DWORD dwFirstCounter;
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DWORD dwFirstHelp;
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if (!dwOpenCount)
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{
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InitializeCriticalSection(&g_csPerf);
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//
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// open Eventlog interface
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//
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hEventLog = MonOpenEventLog();
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//
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// Load rasman.dll and get all the required functions.
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//
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status = InitRasFunctions();
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if( status != ERROR_SUCCESS )
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{
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REPORT_ERROR (RASPERF_UNABLE_DO_IOCTL, LOG_USER);
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// this is fatal, if we can't get data then there's no
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// point in continuing.
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goto OpenExitPoint;
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}
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// AnshulD: BUG: 750860
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// get counter and help index base values
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// update static data structures by adding base to
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// offset value in structure.
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status = RegOpenKeyEx ( HKEY_LOCAL_MACHINE,
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TEXT("SYSTEM\\CurrentControlSet\\Services\\RemoteAccess\\Performance"),
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0L,
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KEY_READ,
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&hKeyDriverPerf);
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if (status != ERROR_SUCCESS)
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{
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REPORT_ERROR (RASPERF_UNABLE_OPEN_DRIVER_KEY, LOG_USER);
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// this is fatal, if we can't get the base values of the
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// counter or help names, then the names won't be available
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// to the requesting application so there's not much
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// point in continuing.
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goto OpenExitPoint;
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}
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size = sizeof (DWORD);
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status = RegQueryValueEx( hKeyDriverPerf,
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TEXT("First Counter"),
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0L,
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&type,
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(LPBYTE)&dwFirstCounter,
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&size);
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if (status != ERROR_SUCCESS)
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{
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// this is fatal, if we can't get the base values of the
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// counter or help names, then the names won't be available
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// to the requesting application so there's not much
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// point in continuing.
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REPORT_ERROR (RASPERF_UNABLE_READ_FIRST_COUNTER, LOG_USER);
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goto OpenExitPoint;
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}
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size = sizeof (DWORD);
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status = RegQueryValueEx( hKeyDriverPerf,
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TEXT("First Help"),
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0L,
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&type,
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(LPBYTE)&dwFirstHelp,
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&size);
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if (status != ERROR_SUCCESS)
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{
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// this is fatal, if we can't get the base values of the
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// counter or help names, then the names won't be available
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// to the requesting application so there's not much
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// point in continuing.
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REPORT_ERROR (RASPERF_UNABLE_READ_FIRST_HELP, LOG_USER);
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goto OpenExitPoint;
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}
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InitObjectCounterIndex( dwFirstCounter,
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dwFirstHelp );
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bInitOK = TRUE; // ok to use this function
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}
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dwOpenCount++; // increment OPEN counter
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status = ERROR_SUCCESS; // for successful exit
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OpenExitPoint:
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if ( hKeyDriverPerf )
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RegCloseKey (hKeyDriverPerf);
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return status;
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}
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//***
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//
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// Routine Description:
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//
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// This routine will open and map the memory used by the RAS driver to
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// pass performance data in. This routine also initializes the data
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// structures used to pass data back to the registry
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//
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// Arguments:
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//
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// Pointer to object ID of each device to be opened (RAS)
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//
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//
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// Return Value:
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//
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// None.
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//
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//***
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DWORD OpenRasPerformanceData( LPWSTR lpDeviceNames )
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{
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LONG status;
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//
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// Since SCREG is multi-threaded and will call this routine in
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// order to service remote performance queries, this library
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// must keep track of how many times it has been opened (i.e.
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// how many threads have accessed it). the registry routines will
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// limit access to the initialization routine to only one thread
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// at a time so synchronization (i.e. reentrancy) should not be
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// a problem
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//
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status = DwInitializeRasCounters();
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return status;
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}
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//***
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//
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// Routine Description:
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//
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// This routine will return the data for the RAS counters.
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//
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// Arguments:
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//
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// IN OUT LPWSTR lpValueName
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// pointer to a wide character string passed by registry.
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//
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// IN OUT LPVOID *lppData
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// IN: pointer to the address of the buffer to receive the completed
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// PerfDataBlock and subordinate structures. This routine will
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// append its data to the buffer starting at the point referenced
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// by *lppData.
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// OUT: points to the first byte after the data structure added by this
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// routine. This routine updated the value at lppdata after appending
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// its data.
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//
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// IN OUT LPDWORD lpcbTotalBytes
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// IN: the address of the DWORD that tells the size in bytes of the
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// buffer referenced by the lppData argument
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// OUT: the number of bytes added by this routine is written to the
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// DWORD pointed to by this argument
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//
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// IN OUT LPDWORD NumObjectTypes
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// IN: the address of the DWORD to receive the number of objects added
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// by this routine
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// OUT: the number of objects added by this routine is written to the
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// DWORD pointed to by this argument
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//
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// Return Value:
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//
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// ERROR_MORE_DATA if buffer passed is too small to hold data
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// any error conditions encountered are reported to the event log if
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// event logging is enabled.
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//
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// ERROR_SUCCESS if success or any other error. Errors, however are
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// also reported to the event log.
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//
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//***
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DWORD CollectRasPerformanceData(
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IN LPWSTR lpValueName,
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IN OUT LPVOID *lppData,
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IN OUT LPDWORD lpcbTotalBytes,
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IN OUT LPDWORD lpNumObjectTypes )
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{
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// Variables for reformating the data
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NTSTATUS Status;
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ULONG SpaceNeeded;
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PBYTE pbIn = (PBYTE) *lppData;
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// variables used for error logging
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DWORD dwQueryType;
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// Variables used to record which objects are required
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static BOOL IsRasPortObject;
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static BOOL IsRasTotalObject;
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if ( lpValueName == NULL ||
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lppData == NULL || *lppData == NULL ||
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lpcbTotalBytes == NULL || lpNumObjectTypes == NULL ) {
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if ( lpcbTotalBytes ) *lpcbTotalBytes = 0;
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if ( lpNumObjectTypes ) *lpNumObjectTypes = 0;
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return ERROR_SUCCESS;
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}
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if(!bInitOK)
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{
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Status = DwInitializeRasCounters();
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}
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//
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// before doing anything else, see if Open went OK
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//
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if (!bInitOK)
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{
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// unable to continue because open failed.
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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return ERROR_SUCCESS; // yes, this is a successful exit
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}
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if(!FRasmanStarted())
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{
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PRAS_PORT_DATA_DEFINITION pRasPortDataDefinition;
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PRAS_TOTAL_DATA_DEFINITION pRasTotalDataDefinition;
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PPERF_COUNTER_BLOCK pPerfCounterBlock;
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PVOID pData;
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DWORD TotalBytes = 0;
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DWORD ObjectTypes = 0;
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DWORD BytesRequired;
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BytesRequired = ALIGN8(sizeof(RAS_PORT_DATA_DEFINITION)) +
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ALIGN8(sizeof(RAS_TOTAL_DATA_DEFINITION))+
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ALIGN8(SIZE_OF_RAS_TOTAL_PERFORMANCE_DATA);
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if ( *lpcbTotalBytes < BytesRequired ) {
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*lpcbTotalBytes = 0;
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*lpNumObjectTypes = 0;
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return ERROR_MORE_DATA;
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}
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pData = *lppData;
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//
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// Copy the (constant, initialized) RAS PORT Object Type and
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// counter definitions to the caller's data buffer
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//
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pRasPortDataDefinition = pData;
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memcpy( pRasPortDataDefinition,
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&gRasPortDataDefinition,
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sizeof(RAS_PORT_DATA_DEFINITION));
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//
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// Move pData to the location where we are going to copy the
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// RAS_TOTAL_DATA_DEFINITION
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//
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pData = (PBYTE) pData + ALIGN8(sizeof(RAS_PORT_DATA_DEFINITION));
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TotalBytes += ALIGN8(sizeof(RAS_PORT_DATA_DEFINITION));
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pRasPortDataDefinition->RasObjectType.TotalByteLength =
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ALIGN8(sizeof(RAS_PORT_DATA_DEFINITION));
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ObjectTypes++;
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//
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// Copy the (constant, initialized) RAS TOTAL Object Type and
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// counter definitions to the caller's data buffer
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//
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memcpy( pData,
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&gRasTotalDataDefinition,
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sizeof(RAS_TOTAL_DATA_DEFINITION));
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//
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// Move pData to the location where we are going to copy the
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// counter block for RAS TOTAL
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//
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pData = (PBYTE) pData + ALIGN8(sizeof(RAS_TOTAL_DATA_DEFINITION));
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TotalBytes += ALIGN8(sizeof(RAS_TOTAL_DATA_DEFINITION));
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//
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// Set all the counter values to 0
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//
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memset ( pData, 0, ALIGN8(SIZE_OF_RAS_TOTAL_PERFORMANCE_DATA));
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//
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// Set the Bytelength field of the counter block
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//
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pPerfCounterBlock = pData;
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pPerfCounterBlock->ByteLength = ALIGN8(SIZE_OF_RAS_TOTAL_PERFORMANCE_DATA);
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//
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// Move pData to the end of the RAS TOTAL counter block
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//
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pData = (PBYTE) pData + ALIGN8(SIZE_OF_RAS_TOTAL_PERFORMANCE_DATA);
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TotalBytes += ALIGN8(SIZE_OF_RAS_TOTAL_PERFORMANCE_DATA);
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ObjectTypes++;
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*lpcbTotalBytes = TotalBytes;
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*lpNumObjectTypes = ObjectTypes;
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*lppData = pData;
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return ERROR_SUCCESS;
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}
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//
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// Rasman is up and running.
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//
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//
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// Reset some output variables.
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//
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*lpNumObjectTypes = 0;
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EnterCriticalSection(&g_csPerf);
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//
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// Initialize all the port information.
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//
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if(ERROR_SUCCESS != InitPortInfo())
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{
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REPORT_ERROR_DATA (RASPERF_UNABLE_CREATE_PORT_TABLE, LOG_USER,
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&status, sizeof(status));
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// this is fatal, if we can't get the base values of the
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// counter or help names, then the names won't be available
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// to the requesting application so there's not much
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// point in continuing.
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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LeaveCriticalSection(&g_csPerf);
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return ERROR_SUCCESS;
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}
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//
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// see if this is a foreign (i.e. non-NT) computer data request
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//
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dwQueryType = GetQueryType (lpValueName);
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if (dwQueryType == QUERY_FOREIGN)
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{
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// this routine does not service requests for data from
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// Non-NT computers
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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LeaveCriticalSection(&g_csPerf);
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return ERROR_SUCCESS;
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}
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else if (dwQueryType == QUERY_ITEMS)
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{
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IsRasPortObject = IsNumberInUnicodeList (gRasPortDataDefinition.RasObjectType.ObjectNameTitleIndex,
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lpValueName);
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IsRasTotalObject = IsNumberInUnicodeList (gRasTotalDataDefinition.RasObjectType.ObjectNameTitleIndex,
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lpValueName);
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if ( !IsRasPortObject && !IsRasTotalObject )
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{
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//
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// request received for data object not provided by this routine
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//
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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LeaveCriticalSection(&g_csPerf);
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return ERROR_SUCCESS;
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}
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}
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else if( dwQueryType == QUERY_GLOBAL )
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{
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IsRasPortObject = IsRasTotalObject = TRUE;
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}
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//
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// Now check to see if we have enough space to hold all the data
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//
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SpaceNeeded = GetSpaceNeeded(IsRasPortObject, IsRasTotalObject);
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if ( *lpcbTotalBytes < SpaceNeeded )
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{
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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LeaveCriticalSection(&g_csPerf);
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return ERROR_MORE_DATA;
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}
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//
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// Collect all the RAS statistics now.
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//
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Status = CollectRasStatistics();
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if( Status != ERROR_SUCCESS )
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{
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REPORT_ERROR_DATA (RASPERF_CANNOT_GET_RAS_STATISTICS, LOG_USER,
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&Status, sizeof(Status));
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*lpcbTotalBytes = (DWORD) 0;
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*lpNumObjectTypes = (DWORD) 0;
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LeaveCriticalSection(&g_csPerf);
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return ERROR_SUCCESS;
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}
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//
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// We first fill in the data for object Ras Port, if needed.
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//
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if( IsRasPortObject )
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{
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PRAS_PORT_DATA_DEFINITION pRasPortDataDefinition;
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RAS_PORT_INSTANCE_DEFINITION RasPortInstanceDefinition;
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PRAS_PORT_INSTANCE_DEFINITION pRasPortInstanceDefinition;
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DWORD cPorts;
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DWORD i;
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PVOID pData;
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cPorts = GetNumOfPorts();
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pRasPortDataDefinition = (PRAS_PORT_DATA_DEFINITION) *lppData;
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//
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// Copy the (constant, initialized) Object Type and counter definitions
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// to the caller's data buffer
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//
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memcpy( pRasPortDataDefinition,
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&gRasPortDataDefinition,
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sizeof(RAS_PORT_DATA_DEFINITION));
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//
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// Now copy the instance definition and counter block.
|
|
//
|
|
|
|
|
|
//
|
|
// First construct the default perf instance definition.
|
|
//
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.ByteLength =
|
|
ALIGN8(sizeof(RAS_PORT_INSTANCE_DEFINITION));
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.ParentObjectTitleIndex = 0;
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.ParentObjectInstance = 0;
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.NameOffset =
|
|
sizeof(PERF_INSTANCE_DEFINITION);
|
|
|
|
//DbgPrint("RASCTRS: RasPortinstanceDefinition.ByteLength = 0x%x\n",
|
|
// RasPortInstanceDefinition.RasInstanceType.ByteLength);
|
|
|
|
|
|
/* Don't hard code the length of the instance name.
|
|
** PerfMon checks the actual instance name length to determine
|
|
** if the name is properly formatted, so compute it for
|
|
** each instance name. ramc 2/15/96.
|
|
** RasPortInstanceDefinition.RasInstanceType.NameLength =
|
|
** sizeof( WCHAR ) * MAX_PORT_NAME;
|
|
*/
|
|
|
|
//
|
|
// Get to the end of the data definition.
|
|
//
|
|
|
|
// pData = (PVOID) &(pRasPortDataDefinition[1]);
|
|
|
|
pData = ((PBYTE) pRasPortDataDefinition + ALIGN8(sizeof(RAS_PORT_DATA_DEFINITION)));
|
|
|
|
|
|
for( i=0; i < cPorts; i++ )
|
|
{
|
|
|
|
//DbgPrint("RASCTRS: port %d, pData = 0x%x\n", i, pData);
|
|
|
|
//
|
|
// First copy the instance definition data.
|
|
//
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.UniqueID = PERF_NO_UNIQUE_ID;
|
|
|
|
lstrcpyW( (LPWSTR)&RasPortInstanceDefinition.InstanceName,
|
|
GetInstanceName(i) );
|
|
|
|
// Compute the instance name length
|
|
|
|
RasPortInstanceDefinition.RasInstanceType.NameLength =
|
|
(lstrlenW(RasPortInstanceDefinition.InstanceName) + 1) *
|
|
sizeof( WCHAR );
|
|
|
|
|
|
memcpy( pData, &RasPortInstanceDefinition,
|
|
sizeof( RasPortInstanceDefinition ) );
|
|
|
|
//
|
|
// Move pPerfInstanceDefinition to the beginning of data block.
|
|
//
|
|
|
|
pData = (PVOID)((PBYTE) pData + ALIGN8(sizeof(RAS_PORT_INSTANCE_DEFINITION)));
|
|
|
|
|
|
//
|
|
// Get the data block. Note that pPerfInstanceDefinition will be
|
|
// set to the next available byte.
|
|
//
|
|
|
|
GetInstanceData( i, &pData );
|
|
}
|
|
|
|
//
|
|
// Set *lppData to the next available byte.
|
|
//
|
|
|
|
*lppData = pData;
|
|
|
|
(*lpNumObjectTypes)++;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// Then we fill in the data for object Ras Total, if needed.
|
|
//
|
|
|
|
if( IsRasTotalObject )
|
|
{
|
|
PRAS_TOTAL_DATA_DEFINITION pRasTotalDataDefinition;
|
|
PVOID pData;
|
|
|
|
pRasTotalDataDefinition = (PRAS_TOTAL_DATA_DEFINITION) *lppData;
|
|
|
|
|
|
//DbgPrint("RASCTRS: RasTotalDataDefinition = 0x%x\n",
|
|
// pRasTotalDataDefinition);
|
|
|
|
//
|
|
// Copy the (constant, initialized) Object Type and counter definitions
|
|
// to the caller's data buffer
|
|
//
|
|
|
|
memcpy( pRasTotalDataDefinition,
|
|
&gRasTotalDataDefinition,
|
|
sizeof(RAS_TOTAL_DATA_DEFINITION));
|
|
|
|
|
|
//
|
|
// Now copy the counter block.
|
|
//
|
|
|
|
|
|
//
|
|
// Set pRasTotalDataDefinition to the beginning of counter block.
|
|
//
|
|
|
|
// pData = (PVOID) &(pRasTotalDataDefinition[1]);
|
|
pData = (PBYTE) pRasTotalDataDefinition + ALIGN8(sizeof(RAS_TOTAL_DATA_DEFINITION));
|
|
|
|
//DbgPrint("RASCTRS: pData for total = 0x%x\n", pData);
|
|
|
|
GetTotalData( &pData );
|
|
|
|
//
|
|
// Set *lppData to the next available byte.
|
|
//
|
|
|
|
*lppData = pData;
|
|
|
|
(*lpNumObjectTypes)++;
|
|
}
|
|
|
|
//DbgPrint("RASCTRS: pbOut = 0x%x\n", *lppData);
|
|
|
|
*lpcbTotalBytes = SpaceNeeded;
|
|
|
|
/*
|
|
DbgPrint("pbIn+SpaceNeeded=0x%x, *lppData=0x%x\n",
|
|
pbIn+SpaceNeeded,
|
|
*lppData);
|
|
*/
|
|
|
|
ASSERT((pbIn + SpaceNeeded) == (PBYTE) *lppData);
|
|
|
|
LeaveCriticalSection(&g_csPerf);
|
|
|
|
return ERROR_SUCCESS;
|
|
}
|
|
|
|
|
|
//***
|
|
//
|
|
// Routine Description:
|
|
//
|
|
// This routine closes the open handles to RAS device performance
|
|
// counters.
|
|
//
|
|
// Arguments:
|
|
//
|
|
// None.
|
|
//
|
|
// Return Value:
|
|
//
|
|
// ERROR_SUCCESS
|
|
//
|
|
//***
|
|
|
|
DWORD CloseRasPerformanceData()
|
|
{
|
|
if(!bInitOK)
|
|
{
|
|
|
|
return ERROR_SUCCESS;
|
|
}
|
|
if (!(--dwOpenCount))
|
|
{
|
|
// when this is the last thread...
|
|
|
|
MonCloseEventLog();
|
|
EnterCriticalSection(&g_csPerf);
|
|
ClosePortInfo();
|
|
DeleteCriticalSection(&g_csPerf);
|
|
}
|
|
|
|
return ERROR_SUCCESS;
|
|
|
|
}
|