windows-nt/Source/XPSP1/NT/base/ntos/wmi/sample/wmifilt
2020-09-26 16:20:57 +08:00
..
filter.c Add source files 2020-09-26 16:20:57 +08:00
filter.h Add source files 2020-09-26 16:20:57 +08:00
filter.mof Add source files 2020-09-26 16:20:57 +08:00
filter.rc Add source files 2020-09-26 16:20:57 +08:00
inf.htm Add source files 2020-09-26 16:20:57 +08:00
makefile Add source files 2020-09-26 16:20:57 +08:00
makefile.inc Add source files 2020-09-26 16:20:57 +08:00
pnp.c Add source files 2020-09-26 16:20:57 +08:00
power.c Add source files 2020-09-26 16:20:57 +08:00
readme.htm Add source files 2020-09-26 16:20:57 +08:00
sources Add source files 2020-09-26 16:20:57 +08:00
util.c Add source files 2020-09-26 16:20:57 +08:00
wmifilt.htm Add source files 2020-09-26 16:20:57 +08:00
wmisamp.c Add source files 2020-09-26 16:20:57 +08:00

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<title>WMI Sample Filter Driver</title>
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  <o:LastAuthor>Alan Warwick</o:LastAuthor>
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<div class=Section1>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>This
sample does not have a dedicated .inf file. The file inf.txt has information <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>about
the inf sections that need to be modified to the inf to which this filter
driver <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>is
attached.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>If you
have trouble getting the perfmon counters to show up within sysmon<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>then
check the following<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>1. Use
Wbemtest.exe or generated vbs test scripts to query the class <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><span
style="mso-spacerun: yes"><3E><> </span>and obtain instances with valid data.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>2. The class
has the HiPerf and PerfDetail qualifiers <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>3. Each
property is a uint32, uint64, sint32 or sint64. Each property has <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><span
style="mso-spacerun: yes"><3E><> </span>a PerfDetail, DefaultScale and CounterType
qualifier.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>If the
above steps do not help you may need to do the following:<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>1. Exit
sysmon and stop the wmiapsrv service by typing &quot;net stop wmiapsrv&quot;<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>2. Go
into the registry and delete the value <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><span
style="mso-spacerun: yes"><3E><>
</span>HKEY_LOCAL_MACHINE\Software\Microsoft\WBEM\Providers\Performance\Performance
Data<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>3.
Restart the wmiapsrv service by typing &quot;net start wmiapsrv&quot;<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>4. The
above registry value should be repopulated with data that includes<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><span
style="mso-spacerun: yes"><3E><> </span>the text of you class name and properties.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>The
first time you click the add counters button in sysmon you will not see <o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>the WMI
counters in the list. At this point you should open task manager<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>(by
running taskmgr.exe) and wait until the winmgmt.exe process returns to<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>0% cpu
utilization. Now click the add counters button again and you will<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>see the
WMI counters in the list.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>Also be
aware that you should not start any drivers containing binary mofs<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>or use
mofcomp.exe to compile in any mofs with WMI perfcounters while<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'>sysmon
is running.<o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoPlainText><span style='mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

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