RUBY COMMAND:
$ ruby -e 'require "wx"'
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wx.rb:12:in `require':
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so: cannot restore segment prot after reloc:
Permission denied - /usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so (LoadError)
from /usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wx.rb:12:in `<top (required)>'
from -e:1:in `require'
from -e:1:in `<main>'
SELINUX WARNING:
Summary:
SELinux is preventing ruby from loading
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so which
requires text relocation.
Detailed Description:
The ruby application attempted to load
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so which
requires text relocation. This is a potential security problem. Most libraries
do not need this permission. Libraries are sometimes coded incorrectly and
request this permission. The SELinux Memory Protection Tests
(http://people.redhat.com/drepper/selinux-mem.html) web page explains how to
remove this requirement. You can configure SELinux temporarily to allow
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so to use
relocation as a workaround, until the library is fixed. Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.
Allowing Access:
If you trust
/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so to run
correctly, you can change the file context to textrel_shlib_t. "chcon -t
textrel_shlib_t
'/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so'" You
must also change the default file context files on the system in order to
preserve them even on a full relabel. "semanage fcontext -a -t textrel_shlib_t
'/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so'"
The following command will allow this access:
chcon -t textrel_shlib_t '/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so'
Additional Information:
Source Context user_u:system_r:unconfined_t
Target Context user_u:object_r:lib_t
Target Objects /usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x
86-linux/lib/wxruby2.so [ file ]
Source ruby
Source Path /usr/local/bin/ruby
Port <Unknown>
Host localhost.localdomain
Source RPM Packages
Target RPM Packages
Policy RPM selinux-policy-2.4.6-203.el5
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name allow_execmod
Host Name localhost.localdomain
Platform Linux localhost.localdomain 2.6.18-128.1.6.el5 #1
SMP Wed Apr 1 09:19:18 EDT 2009 i686 i686
Alert Count 1
First Seen Wed 16 Dec 2009 04:20:19 PM EST
Last Seen Wed 16 Dec 2009 04:20:19 PM EST
Local ID 822...(this info removed)
Line Numbers
Raw Audit Messages
host=localhost.localdomain type=AVC msg=audit(1260998419.336:52): avc: denied { execmod } for pid=3312
comm="ruby" path="/usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so" dev=hda5
ino=6514789 scontext=user_u:system_r:unconfined_t:s0 tcontext=user_u:object_r:lib_t:s0 tclass=file
host=localhost.localdomain type=SYSCALL msg=audit(1260998419.336:52): arch=40000003 syscall=125 success=no exit=-13
a0=e4f000 a1=888000 a2=5 a3=bf935340 items=0 ppid=2931 pid=3312 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500
egid=500 sgid=500 fsgid=500 tty=pts1 ses=1 comm="ruby" exe="/usr/local/bin/ruby"
subj=user_u:system_r:unconfined_t:s0 key=(null)
LDD COMMAND: (shown here in case relevant)
$ ldd /usr/local/lib/ruby/gems/1.9.1/gems/wxruby-2.0.1-x86-linux/lib/wxruby2.so
linux-gate.so.1 => (0x001c2000)
libwx_gtk2u_stc-2.8.so.0 => /usr/lib/libwx_gtk2u_stc-2.8.so.0 (0x0056d000)
libwx_gtk2u_gl-2.8.so.0 => /usr/lib/libwx_gtk2u_gl-2.8.so.0 (0x00110000)
libwx_gtk2u_media-2.8.so.0 => /usr/lib/libwx_gtk2u_media-2.8.so.0 (0x00f6d000)
libwx_gtk2u_richtext-2.8.so.0 => /usr/lib/libwx_gtk2u_richtext-2.8.so.0 (0x001c3000)
libwx_gtk2u_aui-2.8.so.0 => /usr/lib/libwx_gtk2u_aui-2.8.so.0 (0x002e2000)
libwx_gtk2u_xrc-2.8.so.0 => /usr/lib/libwx_gtk2u_xrc-2.8.so.0 (0x0011c000)
libwx_gtk2u_qa-2.8.so.0 => /usr/lib/libwx_gtk2u_qa-2.8.so.0 (0x002b8000)
libwx_gtk2u_html-2.8.so.0 => /usr/lib/libwx_gtk2u_html-2.8.so.0 (0x00349000)
libwx_gtk2u_adv-2.8.so.0 => /usr/lib/libwx_gtk2u_adv-2.8.so.0 (0x003e8000)
libwx_gtk2u_core-2.8.so.0 => /usr/lib/libwx_gtk2u_core-2.8.so.0 (0x00f7e000)
libwx_baseu_xml-2.8.so.0 => /usr/lib/libwx_baseu_xml-2.8.so.0 (0x001b4000)
libwx_baseu_net-2.8.so.0 => /usr/lib/libwx_baseu_net-2.8.so.0 (0x004ac000)
libwx_baseu-2.8.so.0 => /usr/lib/libwx_baseu-2.8.so.0 (0x08010000)
librt.so.1 => /lib/librt.so.1 (0x002d8000)
libdl.so.2 => /lib/libdl.so.2 (0x001be000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x0050a000)
libgtk-x11-2.0.so.0 => /usr/lib/libgtk-x11-2.0.so.0 (0x03f92000)
libgdk-x11-2.0.so.0 => /usr/lib/libgdk-x11-2.0.so.0 (0x082b9000)
libatk-1.0.so.0 => /usr/lib/libatk-1.0.so.0 (0x0053c000)
libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0x02f05000)
libpangoxft-1.0.so.0 => /usr/lib/libpangoxft-1.0.so.0 (0x004da000)
libpangox-1.0.so.0 => /usr/lib/libpangox-1.0.so.0 (0x004e1000)
libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0x0324d000)
libgobject-2.0.so.0 => /lib/libgobject-2.0.so.0 (0x015d0000)
libgmodule-2.0.so.0 => /lib/libgmodule-2.0.so.0 (0x00558000)
libgthread-2.0.so.0 => /lib/libgthread-2.0.so.0 (0x0055b000)
libglib-2.0.so.0 => /lib/libglib-2.0.so.0 (0x0180a000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x019d8000)
libm.so.6 => /lib/libm.so.6 (0x01302000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00560000)
libpthread.so.0 => /lib/libpthread.so.0 (0x01329000)
libc.so.6 => /lib/libc.so.6 (0x04b7c000)
libz.so.1 => /usr/lib/libz.so.1 (0x03820000)
libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x00683000)
libSM.so.6 => /usr/lib/libSM.so.6 (0x036f4000)
libpng12.so.0 => /usr/lib/libpng12.so.0 (0x03a5a000)
libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x039e2000)
libtiff.so.3 => /usr/lib/libtiff.so.3 (0x07534000)
libGL.so.1 => /usr/lib/libGL.so.1 (0x01340000)
libGLU.so.1 => /usr/lib/libGLU.so.1 (0x013ae000)
libgstreamer-0.10.so.0 => /usr/lib/libgstreamer-0.10.so.0 (0x07a45000)
libxml2.so.2 => /usr/lib/libxml2.so.2 (0x07ba4000)
libgconf-2.so.4 => /usr/lib/libgconf-2.so.4 (0x078b0000)
libORBit-2.so.0 => /usr/lib/libORBit-2.so.0 (0x07916000)
libgstinterfaces-0.10.so.0 => /usr/lib/libgstinterfaces-0.10.so.0 (0x0782f000)
libSDL-1.2.so.0 => /usr/lib/libSDL-1.2.so.0 (0x02374000)
libexpat.so.0 => /lib/libexpat.so.0 (0x01f34000)
/lib/ld-linux.so.2 (0x004ee000)
libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0x01e74000)
libX11.so.6 => /usr/lib/libX11.so.6 (0x02518000)
libcairo.so.2 => /usr/lib/libcairo.so.2 (0x0219a000)
libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x02020000)
libXext.so.6 => /usr/lib/libXext.so.6 (0x01f66000)
libXrender.so.1 => /usr/lib/libXrender.so.1 (0x0142e000)
libXi.so.6 => /usr/lib/libXi.so.6 (0x01437000)
libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x00686000)
libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0x0143f000)
libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0x01449000)
libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0x0144e000)
libXft.so.2 => /usr/lib/libXft.so.2 (0x07b83000)
libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x0147c000)
libICE.so.6 => /usr/lib/libICE.so.6 (0x014fc000)
libXxf86vm.so.1 => /usr/lib/libXxf86vm.so.1 (0x0665a000)
libdrm.so.2 => /usr/lib/libdrm.so.2 (0x06675000)
libesd.so.0 => /usr/lib/libesd.so.0 (0x051fc000)
libaudiofile.so.0 => /usr/lib/libaudiofile.so.0 (0x05346000)
libXau.so.6 => /usr/lib/libXau.so.6 (0x0068a000)
libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x03b66000)
libasound.so.2 => /lib/libasound.so.2 (0x0160f000)
PRIOR COMMANDS:
(as root)
# gem install wxruby
# yum install wxGTK
# yum install wxGTK-gl
MY SYSTEM:
(Centos 5.1)
$ uname -a
Linux localhost.localdomain 2.6.18-128.1.6.el5 #1 SMP Wed Apr 1 09:19:18 EDT 2009 i686 i686 i386 GNU/Linux
SOME BACKGROUND INFO WHICH MAY HELP:
Text Relocations
http://people.redhat.com/drepper/textrelocs.html |
