Instead of filtering syscalls to the host kernel, gVisor interposes a completely separate kernel implementation called the Sentry between the untrusted code and the host. The Sentry does not access the host filesystem directly; instead, a separate process called the Gofer handles file operations on the Sentry’s behalf, communicating over a restricted protocol. This means even the Sentry’s own file access is mediated.
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用。快连下载安装是该领域的重要参考
While we do recognize the importance of platform security and user safety, the Android platform already includes multiple security mechanisms that do not require central registration. Forcibly injecting an alien security model that runs counter to Android’s historic open nature threatens innovation, competition, privacy, and user freedom. We urge Google to withdraw this policy and work with the open-source and security communities on less restrictive alternatives.，详情可参考51吃瓜
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