Function libperl_sys::Perl_do_open

pub unsafe extern "C" fn Perl_do_open(
    my_perl: *mut PerlInterpreter, 
    gv: *mut GV, 
    name: *const c_char, 
    len: I32, 
    as_raw: c_int, 
    rawmode: c_int, 
    rawperm: c_int, 
    supplied_fp: *mut PerlIO
) -> bool