[Bug 1761997] Re: /var/run needs mode 777 in bionic

[Steve Langasek]

I believe this is a bug in screen.  The postinst script has code to
handle the changed requirements for /run/screen permissions, but then
immediately afterwards a debhelper code snippet runs which clobbers them
again.

** Package changed: ubuntu-release-upgrader (Ubuntu) => screen (Ubuntu)

** Changed in: screen (Ubuntu)
   Importance: Undecided => High

** Changed in: screen (Ubuntu)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/1761997

Title:
  /var/run needs mode 777 in bionic

Status in screen package in Ubuntu:
  Triaged

Bug description:
  I saw some odd behaviour of screen during the upgrade from Xenial to
  Bionic using do-release-upgrade. I was trying to use screen to
  reattach to an upgrade process that had gone sideways during a router
  daemon upgrade (duh). But I was told that the permissions on
  /run/screen needed to be 777. Does the bionic version of screen have
  that as a requirement? And if so, perhaps do-release-upgrade should
  set those permissions in anticipation of the upgrade process so that
  screen works with both old and new versions.

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