GNU bug report logs - #54770
Non-root LUKS devices unusable after Shepherd upgrade

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#54770: closed (Non-root LUKS devices unusable after Shepherd
 upgrade)
Date: Fri, 08 Apr 2022 16:19:01 +0000

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Your message dated Fri, 08 Apr 2022 18:18:07 +0200
with message-id <87zgkvblc0.fsf <at> gnu.org>
and subject line Re: bug#54770: Non-root LUKS devices unusable after Shepherd upgrade
has caused the debbugs.gnu.org bug report #54770,
regarding Non-root LUKS devices unusable after Shepherd upgrade
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Ludovic Courtès <ludo <at> gnu.org>
To: bug-guix <at> gnu.org
Subject: Non-root LUKS devices unusable after Shepherd upgrade
Date: Thu, 07 Apr 2022 18:33:10 +0200

Hi!

Following the Shepherd upgrade in commit
400c9ed3d779308e56038305d40cd93acb496180, attempts to open non-root LUKS
devices from a Shepherd service fail with this cryptsetup message:

  Nothing to read on input.

This is because standard input is now /dev/null so it cannot read the
passphrase.

This is because “shepherd.conf” now does:

    (start-in-the-background …)

    (redirect-port (open-input-file "/dev/null")
                   (current-input-port))

… meaning that ‘redirect-port’ is now called before services are
started.

‘fsck’ invocations for non-root file systems (started from Shepherd
services) would have the same problem.

I’ll try and come up with a solution…

Ludo’.

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From: Ludovic Courtès <ludo <at> gnu.org>
To: 54770-done <at> debbugs.gnu.org
Subject: Re: bug#54770: Non-root LUKS devices unusable after Shepherd upgrade
Date: Fri, 08 Apr 2022 18:18:07 +0200

Ludovic Courtès <ludo <at> gnu.org> skribis:

> Following the Shepherd upgrade in commit
> 400c9ed3d779308e56038305d40cd93acb496180, attempts to open non-root LUKS
> devices from a Shepherd service fail with this cryptsetup message:
>
>   Nothing to read on input.
>
> This is because standard input is now /dev/null so it cannot read the
> passphrase.

Fixed with these commits:

  f239b9d788 tests: Add "encrypted-home-os" installation test.
  dcb0e54a4f file-systems: Invoke fsck tools with 'system*/tty'.
  931f13840b mapped-devices: Ensure 'cryptsetup open' gets a tty.

Ludo’.

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