Bug 226873

Summary:	svgalib will not load unless libraries are copied to usb drive
Product:	[Fedora] Fedora	Reporter:	mcconnau
Component:	selinux-policy-targeted	Assignee:	Daniel Walsh <dwalsh>
Status:	CLOSED NOTABUG	QA Contact:	Ben Levenson <benl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6	CC:	meyering
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-02-05 15:36:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description mcconnau 2007-02-01 20:10:09 UTC

Description of problem:
I installed FC6 from CD set (checksums verified), then installed svgalib
(www.svgalib.org) both versions 1.4.3 and 1.9.25.  After building according to
instructions (with a few changes mainly to correct new compiler issues in 1.4.3)
I tried to run a demo.  It fails to load libraries, complaining that it cannot
restore segment protection after relocation.  Same result by doing ldd -r on the
libraries.  The problem is resolved and the demos run after I copy the libraries
to a usb thumb-drive and change the links in /usr/local/lib to point there.  I
was running as root and had full permissions on all directories in the path to
the demo program and the libraries, and on those files.  I have used svgalib on
several other Linux distros, including a Fedora Core laptop installation from
Emperor Linux, without running into this issue.  I can't think how to determine
whether this is a FC6 issue or svgalib issue.

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


How reproducible:
completely

Steps to Reproduce:
see above

Comment 1 Tim Waugh 2007-02-05 15:26:10 UTC

Fixing component and reassigning.

Comment 2 Jakub Jelinek 2007-02-05 15:36:22 UTC

You built svgalib incorrectly (or it has buggy Makefiles?).
Shared libraries need to be built as position independent code (i.e. using
-fpic or -fPIC compile time flags).
In FC6 the SELinux policy by default disallows DT_TEXTREL shared libraries
(on some arches like x86_64 DT_TEXTREL has never been supported at all), unless
the library uses a special SELinux type (e.g. textrel_shlib_t).
On the USB thumb drive guess you don't have a filesystem that supports SELinux
ACLs.

The best fix is just make sure the library is built with -fpic.  As a fallback,
if it is not (easily) possible to fix it, you can chcon -t textrel_shlib_t the
shared library.