内核空间中实际上没有libc. Libc是用户空间库，您不能在内核空间中使用它.

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

但是移植了libc中几乎所有在内核空间中有意义的函数.通常，您可以在include/linux/中找到标头.

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

据我所知，这两个实现不共享代码库.

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