# Report the File Name in Stream Mode

When you run Filter in file mode, the file name is always reported in the log file. To report the file name in stream mode, you must extract it through the API.

To add the input file name to the log, call the fpFilterConfig() function with the following arguments:

Argument | Parameter
--- | ---
`nType` | `KVFLT_SETOOPSRCFILE`
`nValue` | `TRUE`
`pData` | `input_filename`

For example:

    char      inputfile[250];
    (*fpFilterConfig)(pKVFilter, KVFLT_SETOOPSRCFILE, TRUE, input_filename);

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