Bug 881022

+++ This bug was initially created as a clone of Bug #880186 +++

Description of problem:

User's primary group information is stored in /etc/passwd file.
When two user share same primary group and one of the users is deleted using system-config-users tool, other user looses its primary group.
s-c-u should check /etc/passwd file for group id shared among other users and should not delete the group if so.

Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 6
libuser-0.56.13-5.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Add user foo and foo1 with foo as primary group
useradd foo
useradd -g foo foo1
useradd -g foo foo2

2. Delete foo2 user with userdel and see foo and foo1 still has foo as primary group

3. Delete foo1 using s-c-u and see foo looses its group membership as group foo is deleted by s-c-u
  
Actual results:
group foo is deleted when there are other members associated with it in /etc/passwd file.

Expected results:
group foo should not be deleted when there are other members associated with it in /etc/passwd file


Additional info:
The behavior is same in F17 as well.
No option seen in /etc/libuser.conf to prevent this.

--- Additional comment from Miloslav Trmač on 2012-11-26 14:28:34 EST ---

Thanks for your report.

The code that deletes the group is actually in system-configusers: mainWindow.py:mainWindow:on_delete_activate.  It preserves primary groups with nonempty list of libuser.MEMBERNAME, but it doesn't look for other users that have this group set as primary.

(A reasonably convenient way to do this is to use admin.enumerateUsersByGroup(groupname)).