Bug 1316899 - idmap_hash module works incorrectly when used with other backend modules
Summary: idmap_hash module works incorrectly when used with other backend modules
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: samba
Version: 7.2
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Andreas Schneider
QA Contact: Robin Hack
Marc Muehlfeld
Depends On:
Blocks: 1350759
TreeView+ depends on / blocked
Reported: 2016-03-11 12:31 UTC by Dmitry Zhukovski
Modified: 2019-11-14 07:35 UTC (History)
9 users (show)

Fixed In Version: samba-4.4.4-1.el7
Doc Type: Bug Fix
Doc Text:
The "idmap_hash" module now works correctly when used with other modules Previously, the "idmap_hash" module worked incorrectly when it was used together with other modules. As a consequence, user and group IDs were not mapped properly. A patch has been applied to skip already configured modules. Now, the hash module can be used as the default idmap configuration back end and IDs are resolved correctly.
Clone Of:
: 1350759 (view as bug list)
Last Closed: 2016-11-04 06:59:36 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:2468 0 normal SHIPPED_LIVE samba bug fix and enhancement update 2016-11-03 14:06:51 UTC
Samba Project 11786 0 None None None 2016-03-11 12:49:33 UTC

Description Dmitry Zhukovski 2016-03-11 12:31:33 UTC
Description of problem:
idmap_hash module works incorrectly when used with other backend modules

Version-Release number of selected component (if applicable):
samba 4.2

How reproducible:

Mapping is configured as 
        idmap config * : range = 100000-2139999999
        idmap config * : backend = hash
        idmap config DOM002 : range = 2140000000-4290000000
        idmap config DOM002 : backend = rid

Steps to Reproduce:
1. # wbinfo -i dom001+user1 <---- dom001
# wbinfo --uid-to-sid=1650596368
# wbinfo --sid-to-name S-1-5-21-126432666-1270913926-3679153413-137744
DOM002+user1 1  <--- dom002

Actual results:

Expected results:
DOM002+user1 gets id from 214 range not below

Additional info:

Comment 2 Sumit Bose 2016-03-22 10:05:19 UTC
Changing component, there is no samba4 in RHEL7 anymore only samba

Comment 11 Andreas Schneider 2016-08-03 13:50:51 UTC
In the global section add:

        idmap config * : range = 10000-20000
        idmap config * : backend = hash
        idmap config YOURDOMAIN : range = 30000-40000
        idmap config YOURDOMAIN : backend = rid

If you now get a unix ID for YOURDOMAIN, it should be from the range 30000-40000 but before fixing the issue it was in the range 10000-20000.

wbinfo -i YOURDOMAIN+user1

Comment 19 errata-xmlrpc 2016-11-04 06:59:36 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


Note You need to log in before you can comment on or make changes to this bug.