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MmGetSystemRoutineAddress function (wdm.h)

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The MmGetSystemRoutineAddress routine returns a pointer to a function specified by SystemRoutineName.

Syntax

PVOID MmGetSystemRoutineAddress(
  [in] PUNICODE_STRING SystemRoutineName
);

Parameters

[in] SystemRoutineName

Specifies the name of the system routine to resolve.

Return value

If the function name can be resolved, the routine returns a pointer to the function. Otherwise, the routine returns NULL.

Remarks

Drivers can use this routine to determine if a routine is available on a specific version of Windows. It can only be used for routines exported by the kernel or HAL, not for any driver-defined routine.

Requirements

Requirement Value
Minimum supported client Available starting with Windows 2000.
Target Platform Universal
Header wdm.h (include Wdm.h, Ntddk.h)
Library NtosKrnl.lib
DLL NtosKrnl.exe
IRQL PASSIVE_LEVEL
DDI compliance rules HwStorPortProhibitedDDIs(storport), PowerIrpDDis(wdm)

See also

IoIsWdmVersionAvailable