pub unsafe extern "C" fn mnt_table_find_next_fs(
tb: *mut libmnt_table,
itr: *mut libmnt_iter,
match_func: Option<unsafe extern "C" fn(arg1: *mut libmnt_fs, arg2: *mut c_void) -> c_int>,
userdata: *mut c_void,
fs: *mut *mut libmnt_fs,
) -> c_int