FwpmFilterGetByKey0 - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
// fwpmk.h

NTSTATUS FwpmFilterGetByKey0(
  [in]  HANDLE       engineHandle,
  [in]  const GUID   *key,
  [out] FWPM_FILTER0 **filter
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-fwpmk-fwpmfiltergetbykey0)

Description

The FwpmFilterGetByKey0 function retrieves a filter object.

Parameters

engineHandle [in]

Handle for an open session to the filter engine. Call FwpmEngineOpen0 to open a session to the filter engine.

key [in]

Unique identifier of the filter. This GUID was specified in the filterKey member of the filter parameter when the application called FwpmFilterAdd0 for this object.

filter [out]

The filter information.

Return value

Return code/value Description
ERROR_SUCCESS
0
The filter was retrieved successfully.
FWP_E_* error code
0x80320001—0x80320039
A Windows Filtering Platform (WFP) specific error. See WFP Error Codes for details.
RPC_* error code
0x80010001—0x80010122
Failure to communicate with the remote or local firewall engine.
Other NTSTATUS codes An error occurred.

Remarks

The caller must free the returned object by a call to FwpmFreeMemory0.

The caller needs FWPM_ACTRL_READ access to the filter. See Access Control for more information.

FwpmFilterGetByKey0 is a specific implementation of FwpmFilterGetByKey. See WFP Version-Independent Names and Targeting Specific Versions of Windows for more information.

See also