[Bug 1889786] [NEW] `netplan apply` leaves leftover directories under /tmp

[Simon Déziel]

Public bug reported:

Running 'netplan apply' leaves leftover directories under /tmp.

Steps to reproduce:

1) Create a container
$ lxc launch images:ubuntu/focal f-netplan

2) Run 'netplan apply'
$ lxc exec f-netplan netplan apply
$ lxc exec f-netplan netplan apply

3) Check for leftovers
$ lxc exec f-netplan -- ls -l /tmp | grep netplan


Step 3 should return nothing but it currently looks like that:

$ lxc exec f-netplan -- ls -l /tmp | grep netplan
drwx------ 2 root root 2 Jul 31 14:15 netplan_jisn27s4
drwx------ 2 root root 2 Jul 31 14:15 netplan_p3hnod6y


On desktop/graphical sessions, this causes some noise from gsd-housekeeping:
Jul 31 15:48:24 foo gsd-housekeepin[1606]: Failed to enumerate children of /tmp/netplan_n_2cznjs: Error opening directory '/tmp/netplan_n_2cznjs': Permission denied

This issue was observed on Bionic and Focal.

Additional information:

$ lxc exec f-netplan -- dpkg -l | grep netplan
ii  libnetplan0:amd64           0.99-0ubuntu3~20.04.2     amd64        YAML network configuration abstraction runtime library
ii  netplan.io                  0.99-0ubuntu3~20.04.2     amd64        YAML network configuration abstraction for various backends
$ lxc exec f-netplan -- lsb_release -rd
Description:	Ubuntu 20.04.1 LTS
Release:	20.04

** Affects: netplan.io (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1889786

Title:
  `netplan apply` leaves leftover directories under /tmp

Status in netplan.io package in Ubuntu:
  New

Bug description:
  Running 'netplan apply' leaves leftover directories under /tmp.

  Steps to reproduce:

  1) Create a container
  $ lxc launch images:ubuntu/focal f-netplan

  2) Run 'netplan apply'
  $ lxc exec f-netplan netplan apply
  $ lxc exec f-netplan netplan apply

  3) Check for leftovers
  $ lxc exec f-netplan -- ls -l /tmp | grep netplan

  
  Step 3 should return nothing but it currently looks like that:

  $ lxc exec f-netplan -- ls -l /tmp | grep netplan
  drwx------ 2 root root 2 Jul 31 14:15 netplan_jisn27s4
  drwx------ 2 root root 2 Jul 31 14:15 netplan_p3hnod6y

  
  On desktop/graphical sessions, this causes some noise from gsd-housekeeping:
  Jul 31 15:48:24 foo gsd-housekeepin[1606]: Failed to enumerate children of /tmp/netplan_n_2cznjs: Error opening directory '/tmp/netplan_n_2cznjs': Permission denied

  This issue was observed on Bionic and Focal.

  Additional information:

  $ lxc exec f-netplan -- dpkg -l | grep netplan
  ii  libnetplan0:amd64           0.99-0ubuntu3~20.04.2     amd64        YAML network configuration abstraction runtime library
  ii  netplan.io                  0.99-0ubuntu3~20.04.2     amd64        YAML network configuration abstraction for various backends
  $ lxc exec f-netplan -- lsb_release -rd
  Description:	Ubuntu 20.04.1 LTS
  Release:	20.04

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