Bug#513639: compiz-core: compiz should not try to read /var/log/Xorg.0.log

[Neil <neil.stewart@warwick.ac.uk>]

Package: compiz-core
Version: 0.7.6-7
Severity: important


compiz fails to start because it cannot read /var/log/Xorg.0.log. 

$compiz --replace &

Checking for Xgl: not present. 
egrep: /var/log/Xorg.0.log: Permission denied
egrep: /var/log/Xorg.0.log: Permission denied
egrep: /var/log/Xorg.0.log: Permission denied
egrep: /var/log/Xorg.0.log: Permission denied
egrep: /var/log/Xorg.0.log: Permission denied
egrep: /var/log/Xorg.0.log: Permission denied
No whitelisted driver found
aborting and using fallback: /usr/bin/metacity

For increased security I'm running with umask 077, which means
/var/log/Xorg.0.log is not read writable by normal users.

$ ls -l Xorg.0.log
-rw------- 1 root root 27106 Jan 30 22:42 Xorg.0.log

The script /usr/bin/compiz assumes /var/log/Xorg.0.log to be readable by
normal users in the function running_under_whitelisted_driver() on line 247.
Changing the permissions for Xorg.0.log fixes the problem. To avoid having
to do this every time I startx, I added a "return 0" at line 260 to skip
this check. This is only a bodge. Presumably another method should be used
to acquire the driver name to check for whitelisting.



-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to POSIX)
Shell: /bin/sh linked to /bin/bash

Versions of packages compiz-core depends on:
ii  libc6                      2.7-18        GNU C Library: Shared libraries
ii  libgl1-mesa-glx [libgl1]   7.0.3-7       A free implementation of the OpenG
ii  libice6                    2:1.0.4-1     X11 Inter-Client Exchange library
ii  libsm6                     2:1.0.3-2     X11 Session Management library
ii  libstartup-notification0   0.9-1         library for program launch feedbac
ii  libx11-6                   2:1.1.5-2     X11 client-side library
ii  libxcomposite1             1:0.4.0-3     X11 Composite extension library
ii  libxdamage1                1:1.1.1-4     X11 damaged region extension libra
ii  libxext6                   2:1.0.4-1     X11 miscellaneous extension librar
ii  libxfixes3                 1:4.0.3-2     X11 miscellaneous 'fixes' extensio
ii  libxinerama1               2:1.0.3-2     X11 Xinerama extension library
ii  libxml2                    2.6.32.dfsg-5 GNOME XML library
ii  libxrandr2                 2:1.2.3-1     X11 RandR extension library
ii  libxslt1.1                 1.1.24-2      XSLT processing library - runtime 
ii  mesa-utils                 7.0.3-7       Miscellaneous Mesa GL utilities

Versions of packages compiz-core recommends:
ii  compiz-plugins                0.7.6-7    OpenGL window and compositing mana

Versions of packages compiz-core suggests:
pn  nvidia-glx                    <none>     (no description available)

-- debconf-show failed