Public bug reported:
In Precise, it is possible to set the guid bit for a directory but not
to unset it.
$ chmod g=rwxs Y
foo@precise:/tmp/X$ ls -l
total 4
drwxrwsr-x 2 foo adm 4096 Feb 5 18:48 Y
foo@precise:/tmp/X$ chmod g= Y
foo@precise:/tmp/X$ ls -l
total 4
drwx--Sr-x 2 maintenance adm 4096 Feb 5 18:48 Y
foo@precise:/tmp/X$ chmod g=rwx Y
maintenance@precise:/tmp/X$ ls -l
total 4
drwxrwsr-x 2 foo adm 4096 Feb 5 18:48 Y
foo@precise:/tmp/X$ chmod 0775 Y
foo@precise:/tmp/X$ ls -l
total 4
drwxrwsr-x 2 foo adm 4096 Feb 5 18:48 Y
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: bash 4.2-1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic-pae 3.2.3
Uname: Linux 3.2.0-14-generic-pae i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Sun Feb 5 18:52:29 2012
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Alpha i386
(20111129)
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: bash
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: bash (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 precise running-unity
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https://bugs.launchpad.net/bugs/927218
Title:
Unable to unset setguid bit
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