Re: [RFC] Null Namespaces

Christian Brauner <[email protected]> Mon, 29 Jun 2026 12:31:33 +0200

Newsgroups	org.kernel.vger.linux-api,org.kernel.vger.linux-arch,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel
Message-ID	<20260629-parabel-kraut-waldsee-a4ebfab949ee@brauner>

> So supply a library of your own and try to convince people to use it
> instead of libc.  You'll have to anyway, seeing that a large and

I agree. And in fact that is what we've been doing:

https://github.com/cyphar/libpathrs

I also plan on splitting the chase*() machinery in systemd out as
a separate C library as well:

https://github.com/systemd/systemd/blob/104750fd60da4c563650785e272a7ce0a6694d01/src/basic/chase.c#L238

> hard-to-predict part of libc will be non-functional.  Which syscalls
> are used by your library is entirely up to you.
> 
> Would that kind of thing added kernel-side assist the development of such
> library?  Maybe, but I wouldn't bet too much on that - if you start from

It wouldn't really and we haven't needed it for that.