闹钟大魔王

Fully support OwnedFd

60

ref: issue #2317, PR #2369 **Introducation** Since nix version 0.27.1, some APIs (e.g., `nix::pty::openpty()`, `nix::sys::socket::socket()`) have started using `OwnedFd` to manage FDs. However, it is not straightforward to pass `OwnedFd`...