Function uci_export 

pub unsafe extern "C" fn uci_export(
    ctx: *mut uci_context,
    stream: *mut _IO_FILE,
    package: *mut uci_package,
    header: bool,
) -> c_int

uci_export: Export one or all uci config packages @ctx: uci context @stream: output stream @package: (optional) uci config package to export @header: include the package header