FwpmCalloutGetById0 - NtDoc

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

NTSTATUS FwpmCalloutGetById0(
  [in]  HANDLE        engineHandle,
  [in]  UINT32        id,
  [out] FWPM_CALLOUT0 **callout
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-fwpmk-fwpmcalloutgetbyid0)

Description

The FwpmCalloutGetById0 function retrieves a callout from the filter engine by using the run-time identifier for the callout.

Parameters

engineHandle [in]

A handle for an open session to the filter engine. Call FwpmEngineOpen0 function to open a session to the filter engine.

id [in]

The run-time identifier for the callout to retrieve from the filter engine. This must be the run-time identifier that was returned when the callout driver called the FwpmCalloutAdd0 function to add the callout to the filter engine.

callout [out]

Information about the state associated with the callout specified by the id parameter.

Return value

The FwpmCalloutGetById0 function returns one of the following NTSTATUS codes.

Return code/value Description
ERROR_SUCCESS
0
The callout 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 callout. See Access Control for more information.

FwpmCalloutGetById0 is a specific implementation of FwpmCalloutGetById. See WFP Version-Independent Names and Targeting Specific Versions of Windows for more information.

See also