Is there a libc in kernel space?

Question

Is there a libc in kernel space? I mean you have to build kernel against some libc right? So Is there a libc (probably statically-linked) sitting within kernel space?

If yes, how is this related to userland glibc? Must they be the same version?

Answer 1

There is actually no libc in kernel space. Libc is user-space library, and you can't use it from kernel-space.

But almost all functions from libc that make sense in kernel space are ported. You can find headers in include/linux/ usually.

As far as I know these two implementations don't share codebase.