From nobody Tue May 30 15:36:21 2023 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4QVxM81Y2kz4XgvF for ; Tue, 30 May 2023 15:36:20 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "www.zefox.com", Issuer "www.zefox.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4QVxM74B6Xz4gW7 for ; Tue, 30 May 2023 15:36:19 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Authentication-Results: mx1.freebsd.org; none Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.17.1/8.15.2) with ESMTPS id 34UFaLgH046134 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 30 May 2023 08:36:22 -0700 (PDT) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.17.1/8.15.2/Submit) id 34UFaLNB046133; Tue, 30 May 2023 08:36:21 -0700 (PDT) (envelope-from fbsd) Date: Tue, 30 May 2023 08:36:21 -0700 From: bob prohaska To: Alexander Leidinger Cc: Yuri , freebsd-current@freebsd.org Subject: Re: Surprise null root password Message-ID: References: <945C9B6D-F2A8-4F0D-BDB0-49A3DE870168@karels.net> <61e30711-f0da-2f42-3a6f-9bd91fc6b1ce@aetern.org> <20230530084133.Horde.4VevT2KY4XCtqoJgvP08jyB@webmail.leidinger.net> List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230530084133.Horde.4VevT2KY4XCtqoJgvP08jyB@webmail.leidinger.net> X-Rspamd-Queue-Id: 4QVxM74B6Xz4gW7 X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:7065, ipnet:50.1.16.0/20, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N On Tue, May 30, 2023 at 08:41:33AM +0200, Alexander Leidinger wrote: > > Quoting bob prohaska (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