Function scandir

pub unsafe extern "C" fn scandir(
    __dir: *const i8,
    __namelist: *mut *mut *mut dirent,
    __selector: Option<unsafe extern "C" fn(_: *const dirent) -> i32>,
    __cmp: Option<unsafe extern "C" fn(_: *mut *const dirent, _: *mut *const dirent) -> i32>,
) -> i32