Date: Tue, 30 May 2023 08:36:21 -0700 From: bob prohaska <fbsd@www.zefox.net> To: Alexander Leidinger <Alexander@leidinger.net> Cc: Yuri <yuri@aetern.org>, freebsd-current@freebsd.org Subject: Re: Surprise null root password Message-ID: <ZHYX9Qa5ZaRMMj1p@www.zefox.net> In-Reply-To: <20230530084133.Horde.4VevT2KY4XCtqoJgvP08jyB@webmail.leidinger.net> References: <ZHDt21wFlpJfQKEs@www.zefox.net> <945C9B6D-F2A8-4F0D-BDB0-49A3DE870168@karels.net> <ZHD%2BND6ilBGaOgcv@www.zefox.net> <CAG5KPzwLheqT_EuiexFRJuD4PyFNzyhCQfmToe4myr3K3YfKpQ@mail.gmail.com> <ZHEGpyKSWj4X/6Lk@www.zefox.net> <61e30711-f0da-2f42-3a6f-9bd91fc6b1ce@aetern.org> <ZHFADmqAmjJOCuIH@www.zefox.net> <20230530084133.Horde.4VevT2KY4XCtqoJgvP08jyB@webmail.leidinger.net>
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On Tue, May 30, 2023 at 08:41:33AM +0200, Alexander Leidinger wrote: > > Quoting bob prohaska <fbsd@www.zefox.net> (from Fri, 26 May 2023 16:26:06 > -0700): > > > On Fri, May 26, 2023 at 10:55:49PM +0200, Yuri wrote: > > > > > > The question is how you update the configuration files, > > > mergemaster/etcupdate/something else? > > > > > > > Via etcupdate after installworld. In the event the system > > requests manual intervention I accept "theirs all". It seems > > odd if that can null a root password. > > > > Still, it does seem an outside possibility. I could see it adding > > system users, but messing with root's existing password seems a > > bit unexpected. > > As you are posting to -current@, I expect you to report this issue about > 14-current systems. As such: there was a "recent" change (2021-10-20) to the > root entry to change the shell. > https://cgit.freebsd.org/src/commit/etc/master.passwd?id=d410b585b6f00a26c2de7724d6576a3ea7d548b7 > > By blindly accepting all changes, this has reset the PW to the default > setting (empty). So it's a line-by-line merge. That's the most sensible explanation available. > > I suggest to review changes ("df" instead of "tf" in etcupdate) to at least > those files which you know you have modified, including the password/group > stuff. After that you can decide if the diff which is shown with "df" can be > applied ("tf"), or if you want to keep the old version ("mf"), or if you > want to modify the current file ("e", with both versions present in the file > so that you can copy/paste between the different versions and keep what you > need). > The key sequences required to copy and paste between files in the edit screen were elusive. Probably it was thought self-evident, but not for me. I last tried it long ago, via mergemaster. Is there is a guide to commands for merging files using /etcupdate? Is it in the vi man page? I couldn't find it. Thanks for writing! bob prohaska
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