Debian Bug report logs - #888227
dash: Dash update remove /bin/sh symlink

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Blake Lee <volitank@volitank.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: dash: Dash update remove /bin/sh symlink

Date: Tue, 23 Jan 2018 21:46:35 -0500

Package: dash
Version: 0.5.8-2.6
Severity: important

Dear Maintainer,

        I was doing an apt dist-upgrade on sid today when apt stopped and there
was no way to bring it back. Dpkg wouldn't work and neither would apt. I
recreated the symlink and after a few tries was able to get the update to
finish. This also has happened on my laptop. relevant terminal output below

(Reading database ... 194866 files and directories currently installed.)
Preparing to unpack .../dpkg_1.19.0.5_amd64.deb ...
Unpacking dpkg (1.19.0.5) over (1.19.0.4) ...
Setting up dpkg (1.19.0.5) ...
(Reading database ... 194866 files and directories currently installed.)
Preparing to unpack .../dash_0.5.8-2.6_amd64.deb ...
Removing 'diversion of /bin/sh to /bin/sh.distrib by dash'
Adding 'diversion of /bin/sh to /bin/sh.distrib by bash'
Removing 'diversion of /usr/share/man/man1/sh.1.gz to
/usr/share/man/man1/sh.distrib.1.gz by dash'
Adding 'diversion of /usr/share/man/man1/sh.1.gz to
/usr/share/man/man1/sh.distrib.1.gz by bash'
Unpacking dash (0.5.8-2.6) over (0.5.8-2.5) ...
dpkg: warning: 'sh' not found in PATH or not executable
dpkg: error: 1 expected program not found in PATH or not executable
Note: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin
E: Sub-process /usr/bin/dpkg returned an error code (2)



-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.12-acs (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages dash depends on:
ii  debianutils  4.8.4
ii  dpkg         1.19.0.5
ii  libc6        2.26-4

dash recommends no packages.

dash suggests no packages.

-- debconf information:
* dash/sh: true

Message #10 received at 888227@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: Blake Lee <volitank@volitank.com>, 888227@bugs.debian.org

Cc: Andrew Shadura <andrewsh@debian.org>

Subject: Re: Bug#888227: dash: Dash update remove /bin/sh symlink

Date: Wed, 24 Jan 2018 08:55:37 +0000

Control: severity 888227 critical
Control: merge 888227 888235

On Tue, 23 Jan 2018 at 21:46:35 -0500, Blake Lee wrote:
> dpkg: warning: 'sh' not found in PATH or not executable

This clearly shouldn't happen, and breaks the whole system, hence critical
severity. It is believed to have been fixed in 0.5.8-2.9, which is
currently being processed on the buildds.

Andrew, when you're uploading an Essential package (and doubly so when
it's an NMU), please test your changes thoroughly before uploading; and
when making packaging changes like these (moving files around, changing
between non-debhelper and debhelper, changing debhelper compat level,
etc.), please use a binary debdiff to check for unexpected results.

I think this indicates that dash should have an autopkgtest that verifies
that everything necessary for a working /bin/sh is where it ought to be.

    smcv

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