Function opensc_sys::sc_list_files

pub unsafe extern "C" fn sc_list_files(
    card: *mut sc_card, 
    buf: *mut u8, 
    buflen: size_t
) -> c_int

List file ids within a DF @param card struct sc_card object on which to issue the command @param buf buffer for the read file ids (the filed ids are stored in the buffer as a sequence of 2 byte values) @param buflen length of the supplied buffer @return number of files ids read or an error code