getcwd(buffer *any, length int) -> int { return syscall(79, buffer, length) } chdir(path *any) -> int { return syscall(80, path) } rename(old *any, new *any) -> int { return syscall(82, old, new) } mkdir(path *any, mode int) -> int { return syscall(83, path, mode) } rmdir(path *any) -> int { return syscall(84, path) } unlink(file *any) -> int { return syscall(87, file) }