Bug 984643 - allow idmap-plugin symlink to be managed by the "alternatives" system
allow idmap-plugin symlink to be managed by the "alternatives" system
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: cifs-utils (Show other bugs)
Unspecified Unspecified
high Severity high
: rc
: ---
Assigned To: Sachin Prabhu
Chao Ye
Depends On: 984088
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Reported: 2013-07-15 11:32 EDT by Jeff Layton
Modified: 2014-06-18 03:43 EDT (History)
8 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 984088
Last Closed: 2014-06-13 06:40:07 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Jeff Layton 2013-07-15 11:32:17 EDT
+++ This bug was initially created as a clone of Bug #984088 +++

Currently cifs-utils tracks what plugin to use via a symlink in /etc/cifs-utils. We already have another facility for these sorts of symlinks in /etc/alternatives. Change it to use a symlink in that directory instead.

--- Additional comment from Jeff Layton on 2013-07-15 09:32:10 EDT ---

Ok, slight difference here...

The alternatives system relies on double-indirection, so we basically need to change /etc/cifs-utils/idmap-plugin to an "alternative" (a symlink that points into /etc/alternatives). The "alternatives" command takes care of the rest.

The only tricky part is that the old idmap-plugin is listed as a %config(noreplace) in the old package. So we need to change that to a %ghost directive to make sure the removal of the old package doesn't remove the symlink created in the %post script by the alternatives command.

I'll hopefully have this fixed in rawhide today...

--- Additional comment from Jeff Layton on 2013-07-15 09:40:31 EDT ---

Ok, new package pushed to rawhide and it seems to do the right thing. Closing with resolution of RAWHIDE.
Comment 2 Jeff Layton 2013-07-17 08:29:40 EDT
Fixed in cifs-utils-6.1-3.el7
Comment 4 Jian Li 2014-01-01 22:10:31 EST
Verified on cifs-utils-6.2-4.el7.x86_64, it use alternative systems

[root@hp-dl388g8-18 rpms]# rpm -q cifs-utils 
[root@hp-dl388g8-18 rpms]# ls -l /etc/alternatives/cifs-idmap-plugin  /etc/cifs-utils/idmap-plugin  -l 
lrwxrwxrwx. 1 root root 32 Jan  1 22:03 /etc/alternatives/cifs-idmap-plugin -> /usr/lib64/cifs-utils/idmapwb.so
lrwxrwxrwx. 1 root root 35 Jan  1 22:03 /etc/cifs-utils/idmap-plugin -> /etc/alternatives/cifs-idmap-plugin

Check cifs-utils-6.0-1.el7, it doesn't use alternative

[root@hp-dl388g8-18 rpms]# ls -l /etc/alternatives/cifs-idmap-plugin  /etc/cifs-utils/idmap-plugin  -l 
ls: cannot access /etc/alternatives/cifs-idmap-plugin: No such file or directory
lrwxrwxrwx. 1 root root 32 Jan  1 22:08 /etc/cifs-utils/idmap-plugin -> /usr/lib64/cifs-utils/idmapwb.so
[root@hp-dl388g8-18 rpms]# rpm -q cifs-utils 
Comment 6 Ludek Smid 2014-06-13 06:40:07 EDT
This request was resolved in Red Hat Enterprise Linux 7.0.

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