On Wed, Aug 15, 2018 at 10:31:04AM -0700, Rodney W. Grimes wrote:
> > On Wed, Aug 15, 2018, at 11:17 AM, Ravi Pokala wrote:
> > > Brad,
> > > 
> > > -----Original Message-----
> > > From: <owner-src-committ...@freebsd.org> on behalf of Brad Davis 
> > > <b...@freebsd.org>
> > > Date: 2018-08-15, Wednesday at 09:22
> > > To: <src-committ...@freebsd.org>, <svn-src-...@freebsd.org>, <svn-src-
> > > h...@freebsd.org>
> > > Subject: svn commit: r337857 - in head: bin/csh bin/sh etc
> > > 
> > > > Author: brd
> > > > Date: Wed Aug 15 16:22:12 2018
> > > > New Revision: 337857
> > > > URL: https://svnweb.freebsd.org/changeset/base/337857
> > > > 
> > > > Log:
> > > >   Fix build after r337849
> > > >   
> > > >   This moves the symlink creation to after where the files are 
> > > > installed.
> > > >   
> > > >   This also inverts the shell change so that it only happens if MK_TCSH 
> > > > is on.
> > > ...
> > > > Modified: head/etc/master.passwd
> > > > ==============================================================================
> > > > --- head/etc/master.passwd      Wed Aug 15 16:16:59 2018        
> > > > (r337856)
> > > > +++ head/etc/master.passwd      Wed Aug 15 16:22:12 2018        
> > > > (r337857)
> > > > @@ -1,6 +1,6 @@
> > > >  # $FreeBSD$
> > > >  #
> > > > -root::0:0::0:0:Charlie &:/root:/bin/csh
> > > > +root::0:0::0:0:Charlie &:/root:/bin/sh
> > > >  toor:*:0:0::0:0:Bourne-again Superuser:/root:
> > > >  daemon:*:1:1::0:0:Owner of many system 
> > > > processes:/root:/usr/sbin/nologin
> > > >  operator:*:2:5::0:0:System &:/:/usr/sbin/nologin
> > > 
> > > Woah! Changing the root shell wasn't mentioned in the change 
> > > description, has nothing to do with fixing r337849, and is a *HUGE* POLA 
> > > violation. At the very least, a change of this magnitude needs public 
> > > discussion, and even if the community agreed, it would also require an 
> > > UPDATING message and relnote.
> > > 
> > > Please revert this change to master.passwd immediately.
> > 
> > Hi Ravi,
> > 
> > Please, look closer.  It doesn't change what is actually installed in 
> > either case, it just inverts the logic.
> 
> Though the end results maybe the same, we now have a sed that
> is running in the normal case, is not run in the exception case,
> a src file that must be editted to match the distribution file,
> etc.  I can not express stronly enough how much I object to this.
> 
> I have explained in your diffential that this should actually be
> put back as far as inverted, and that actually bin/csh/Makefile
> nor bin/sh/Makefile should never even touch etc/master.password,
> simply the wrong place to be doing it.   This should be in what
> ever Makefile installs /etc/master.password an no place else.

As a side observation, this kind of editing at build time can break
-DNO_ROOT.  See PR 209718 for a different example of the same problem.
I haven't yet verified that this change has the same issue; my apologies
if I'm missing something and there is no problem after all.
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