Bug 434810 - lid is confused after specific lusermod changes
lid is confused after specific lusermod changes
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: libuser (Show other bugs)
All Linux
medium Severity medium
: rc
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Assigned To: Miloslav Trmač
Depends On:
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Reported: 2008-02-25 11:44 EST by Milos Malik
Modified: 2008-02-26 07:30 EST (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2008-02-26 07:30:39 EST
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Description Milos Malik 2008-02-25 11:44:52 EST
From Bugzilla Helper:
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Description of problem:
When lusermod is invoked with "-g" parameter, it modifies only /etc/passwd file but does not modify /etc/group file. After this action lid utility is unable to display the user information.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. luseradd testuser
2. lid testuser
3. lusermod -g 1567 testuser
4. lid testuser

Actual Results:
The step 4) produces no output.

Expected Results:
The step 4) produces the same output as step 2) except for gid=1567.

Additional info:
Comment 1 RHEL Product and Program Management 2008-02-25 11:47:43 EST
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 2 Miloslav Trmač 2008-02-26 07:30:39 EST
Thanks for your report.

(lusermod -g) only changes the primary group ID; it can be used to change the
group ID of the user to a different existing group.  Because a group with the
new group ID may already exist, lusermod cannot in general rename the group. 
(If you want to change a group ID of an existing group, use lgroupmod; lgroupmod
will also update all users to use the new group ID.)

Therefore, (lid) cannot show "testuser(gid=1567)".  Arguably it could show
"(gid=1567)" (with an empty group name) - but the situation is caused by an
incorrect configuration and I don't think it's worth it to add a special-case
code to lid to handle this case.

Instead, lusermod in Fedora >= 9 will output a warning if the new group ID does
not refer to an existing group.

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