pub unsafe extern "C" fn switch_dir_next_file(
thedir: *mut switch_dir_t,
buf: *mut c_char,
len: switch_size_t,
) -> *const c_charpub unsafe extern "C" fn switch_dir_next_file(
thedir: *mut switch_dir_t,
buf: *mut c_char,
len: switch_size_t,
) -> *const c_char