[Bug 1226067] Re: ifquery fails with bad file descriptor

[Scott Moser]

I verified this fixes saucy.
$ cat /etc/cloud/build.info 
build_name: server
serial: 20130917
$ ifquery --list --all
lo
eth0

$ cat > /tmp/interfaces <<EOF
auto lo
iface lo inet loopback
auto eth1
iface eth1 inet dhcp
iface eth0 inet dhcp

$ ifquery --list --interfaces=/tmp/interfaces
lo
eth1

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https://bugs.launchpad.net/bugs/1226067

Title:
  ifquery fails with bad file descriptor

Status in “ifupdown” package in Ubuntu:
  Fix Released
Status in “ifupdown” source package in Precise:
  In Progress
Status in “ifupdown” source package in Quantal:
  In Progress
Status in “ifupdown” source package in Raring:
  In Progress

Bug description:
  $ sudo ifquery --list --allow auto; echo $?;
  ifquery: failed to lock lockfile /run/network/.ifstate.lock: Bad file descriptor
  1

  This seems possibly quite serious as /etc/network/if-up.d/upstart uses
  this program to determine the "auto" interfaces and then emits static-
  network-up.

  This reproduces on a fresh saucy image with serial=20130916.

  Also interesting, possibly related and possibly a bug in and of itself:
  $ cp /etc/network/interfaces /tmp/interfaces
  $ sudo ifquery --interfaces /tmp/interfaces  --list --allow=auto
  ifquery: failed to lock lockfile /run/network/.ifstate.lock: Bad file descriptor

  Seems odd that it would do anything with /run/network/.ifstate.lock in
  this case since, by doing so, it means i'd have to have privilege to
  read that file in order to have it parse my provided --interfaces=
  file.

  For reference, on raring instance as non-root:
  $ ifquery --list --allow auto
  lo
  eth0

  
  Related bugs:
   * bug 1160490:  race condition updating statefile

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ifupdown 0.7.44ubuntu2
  ProcVersionSignature: User Name 3.11.0-7.13-generic 3.11.0
  Uname: Linux 3.11.0-7-generic x86_64
  ApportVersion: 2.12.1-0ubuntu4
  Architecture: amd64
  Date: Mon Sep 16 14:02:41 2013
  Ec2AMI: ami-000004dd
  Ec2AMIManifest: FIXME
  Ec2AvailabilityZone: nova
  Ec2InstanceType: m1.tiny
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  MarkForUpload: True
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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