Bug 255441 - missing Requires: libselinux-devel
missing Requires: libselinux-devel
Product: Fedora
Classification: Fedora
Component: procps (Show other bugs)
All All
medium Severity low
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Assigned To: Tomas Smetana
Fedora Extras Quality Assurance
Depends On:
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Reported: 2007-08-26 16:53 EDT by Wart
Modified: 2007-11-30 17:12 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2007-08-27 03:33:15 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Wart 2007-08-26 16:53:12 EDT
Description of problem:
/usr/bin/ps uses dlopen() on libselinux.so in order to determine the selinux
security contexts for each process.  libselinux.so recently moved from the
libselinux package to libselinux-devel.  However, procps has no 'Requires:
libselinux-devel' in order to satisfy the libselinux.so requirement. 
Alternately, procps could be modified to open libselinux.so.1 directly, instead
of using the unversioned symlink.

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

How reproducible:

Steps to Reproduce:
1. Perform a fresh F-7 install and upgrade to the latest Rawhide
2. Notice that libselinux-devel is not installed
3. run 'strace -o trace.out ps auwxZ | head'
Actual results:
Security contexts are displayed as '-'.  The strace output shows that
libselinux.so could not be found.

Expected results:
Security contexts displayed as they were before.

Additional Notes:
I suspect this wasn't a problem before because almost every installation has
libselinux installed, even if selinux is disabled.  But since the libselinux.so
symlink moved to libselinux-devel, it's not safe to assume that libselinux.so is
installed anymore.
Comment 1 Tomas Smetana 2007-08-27 02:47:59 EDT
I prefer opening libselinux.so.1 instead of adding a dependency on devel
package.    This should be fixed in the next release.
Comment 3 Stephen Smalley 2007-11-01 09:49:48 EDT
This bug exists in F7 as well.
yum remove libselinux-devel
ps -Z
yields "-" for all labels.
Comment 4 James Morris 2007-11-01 09:51:13 EDT
Why should a devel library be needed for "ps" ?
Comment 5 Stephen Smalley 2007-11-01 10:19:54 EDT
Upstream procps always dlopen's libselinux.so.1.
This bug is specific to the Fedora procps and its patches.
Comment 6 Tomas Smetana 2007-11-01 11:12:37 EDT
I'll try to explain...  This is a "double bug": procps shouldn't have dlopened
the nonversioned DSO and libselinux (non-devel) shouldn't have provided that
DSO.  The recent Koji build of libselinux for F-7 has this in the changelog:

* Thu Sep 27 2007 Dan Walsh <dwalsh@redhat.com> - 2.0.14-10
- Move libselinux.so back to base package


* Fri Aug 10 2007 Dan Walsh <dwalsh@redhat.com> - 2.0.14-5
- Move libselinux.so to devel package

This doesn't mean Stephen is not right.  I only considered this to be a minor
problem in F-7 (.so was in the base package then) and fixed it only in rawhide.
 I'll fix it also in F-7.
Comment 7 Fedora Update System 2007-11-09 18:44:29 EST
procps-3.2.7-16.1.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update procps'
Comment 8 Fedora Update System 2007-11-26 13:40:32 EST
procps-3.2.7-16.1.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.

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