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Landlock-ing Linux (blog.prizrak.me)

submitted 1 day ago by cm0002@lemmy.cafe to c/linux@programming.dev

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Landlock: What Is It?

Landlock is a Linux API that lets applications explicitly declare which resources they are allowed to access. Its philosophy is similar to OpenBSD’s unveil() and (less so) pledge(): programs can make a contract with the kernel stating, “I only need these files or resources — deny me everything else if I’m compromised.”

It provides a simple, developer-friendly way to add defense-in-depth to applications. Compared to traditional Linux security mechanisms, Landlock is vastly easier to understand and integrate.

This post is meant to be an accessible introduction, and hopefully persuade you to give Landlock a try.

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[–] sga@piefed.social 6 points 1 day ago

A nice article. I need to read more about it, but I will likely use it. My guess on the performance is that there is not going to be any major performance drawback, but since it is runtime, I can not say for sure.