Re: factoring out the change_root() and making exporting change_{root,dir}() as interface

[Elad Efrat <elad%NetBSD.org@localhost>]

Christoph Badura wrote:
> I'd like to factor out the common code of the *chroot syscalls like in
> the following patch.  I'd also like to export change_dir() and the new
> change_root() as an interface from vfs_syscalls.h
>
> I want to use change_dir() and change_root() in a different kernel module.
>
> I've been the code in 5.99.4 kernel for a while.  But this is the diff ported
> to 5.99.15 for discussion purposes.
>
> Comments? Objections?

At the moment both of the exported change root interfaces call kauth(9)
to authorize the operation. Your patch exposes the internals,
change_root(), allowing to bypass authorization. Is this your intention?
if so, why?

Thanks,

-e.