Is the server portion of freebsd-update open source?

[Colin Percival]

markzero wrote:
> In my case, all I'm after is a way to distribute a custom build of
> FreeBSD. When I say custom, I really just mean a standard build with
> a custom make.conf:
> 
> [snip]
> 
> I'd rather not use NFS, for security reasons, so I've had to resort
> to ad-hoc shell scripts to do updates. It'd be nice to have something
> officially supported to replace them.

It looks like nearly all of your customizations simply involve removing
certain files from the system.  FreeBSD Update is designed to handle
this situation: If there is a security update in sendmail and you have
deleted the sendmail binaries, FreeBSD Update will ignore that particular
update.

Is there any reason why this is insufficient?

Colin Percival