[Bug 867806] Re: df -h permission denied error

[Robert Kulagowski]

On Wed, Oct 5, 2011 at 5:09 PM, Luke Scharf <867806 at bugs.launchpad.net> wrote:
> This is how Unix systems are supposed to behave.  The ~lightdm/.gvfs
> filesystem is a private FUSE-mounted filesystem that belongs to the
> lightdm user, so a normal user shouldn't be able to access it.  The same
> thing would happen if you had a GVFS filesystem open as yourself and
> another user (who was were logged in to the machine via ssh of via the
> switch-user feature) ran df -h.
>
> I certainly see why this text being dumped to stderr on a common command
> like df -h feels like an error, though.
>
> This behavior runs deep into the design of the Linux (and all Unix)
> kernel, but I'd be interested in any ideas you have about how to modify
> the behavior to be more suitable.
>
> ** Changed in: bash (Ubuntu)
>       Status: New => Opinion

I understand how permissions work - it's just odd to run into that as
a standard user.  "Principle of least surprise", since it wasn't doing
it on my other Ubuntu systems.  In any case, I've updated and the
error (or the root cause) appears to be gone now.

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https://bugs.launchpad.net/bugs/867806

Title:
  df -h permission denied error

Status in “bash” package in Ubuntu:
  Opinion

Bug description:
  Running "df -h" from the cli as a normal user returns:

  Filesystem            Size  Used Avail Use% Mounted on
  /dev/md0               37G  6.6G   29G  19% /
  udev                  796M  8.0K  796M   1% /dev
  tmpfs                 322M  888K  321M   1% /run
  none                  5.0M     0  5.0M   0% /run/lock
  none                  805M   92K  805M   1% /run/shm
  /dev/sda3             1.8T  265G  1.6T  15% /mnt/d1
  /dev/sdb3             1.8T  1.7T  102G  95% /mnt/d2
  /dev/sdc3             893G   33M  893G   1% /mnt/d3
  df: `/var/lib/lightdm/.gvfs': Permission denied
  $

  running with "su"

  $ sudo df -h
  Filesystem            Size  Used Avail Use% Mounted on
  /dev/md0               37G  6.6G   29G  19% /
  udev                  796M  8.0K  796M   1% /dev
  tmpfs                 322M  888K  321M   1% /run
  none                  5.0M     0  5.0M   0% /run/lock
  none                  805M   92K  805M   1% /run/shm
  /dev/sda3             1.8T  265G  1.6T  15% /mnt/d1
  /dev/sdb3             1.8T  1.7T  102G  95% /mnt/d2
  /dev/sdc3             893G   33M  893G   1% /mnt/d3
  $

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: bash 4.2-0ubuntu4
  ProcVersionSignature: Ubuntu 3.0.0-10.16-server 3.0.4
  Uname: Linux 3.0.0-10-server x86_64
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  Date: Tue Oct  4 14:17:28 2011
  InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426)
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_US.UTF-8
  SourcePackage: bash
  UpgradeStatus: Upgraded to oneiric on 2011-09-05 (29 days ago)

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