downloadItem() fails with Error Code 22 about amsmb2

[BTRLabs]

The "let cbdata = ..." line is the one that is at the heart of the problem (context.swift - line 343). When downloadItem() is called, this func is called twice before erroring out. The first time it appears to execute correctly (i.e., status = 0), but the second time through it fails (i.e., status = -22).
`

static let generic_handler: smb2_command_cb = { smb2, status, command_data, cbdata in
    do {
        guard try smb2.unwrap().pointee.fd >= 0 else { return }
        let cbdata = try cbdata.unwrap().bindMemory(to: CBData.self, capacity: 1).pointee
        if status != SMB2_STATUS_SUCCESS {
            cbdata.result = status
        }
        cbdata.dataHandler?(command_data)
        cbdata.isFinished = true
    } catch { }
}

`

[BTRLabs]

So it turns out that when a path is provided to downloadItem() or contents() that "DOES NOT EXIST", LIBSMB2 responds with an ambiguous "Error Code 22 STATUS_INVALID_PARAMETER" error response, rather than a clear "Path does not exist" error response.

The root of the issue experienced was due to not trimming the leading slash from the path that was returned from the URLResourceKey.pathKey value from contentsOfDirectory(). Trimming that leading slash has AMSMB2 humming perfectly now.

Sorry for the multiple comments, but it simply wasn't an obvious error response and cost the better part of 8 hours trying to debug. Only after connecting against a Linux SMB share to gut check things and receiving the same error did it occur that this might be the case.