SELinux is preventing /usr/libexec/gnome-session-check-accelerated-helper from 'read, write' accesses on the chr_file nvidiactl.

[Mark Eggers]

On Tue, 07 Jun 2011 12:28:03 -0700, Joe Zeff wrote:

> On 06/07/2011 06:46 AM, Lawrence E Graves wrote:
>> SELinux is preventing
>> /usr/libexec/gnome-session-check-accelerated-helper from 'read, write'
>> accesses on the chr_file nvidiactl.
> 
> Have you tried following the instructions SELinux gives you?  If so,
> what happens; if not, why not?

I've added a local policy following the instructions given in the alert.

This fixes the problem.

Since this is an NVidia installer problem, I guess the bug should be 
reported to NVidia. The installer already does a lot of SELinux 
modifications, so I imagine adding one more shouldn't be a problem.

>From audit.log:

type=AVC msg=audit(1307125809.403:55): avc:  denied  { read write } for 
 pid=1596 comm="gnome-session-c" name="nvidiactl" dev=devtmpfs ino=18991
 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023
 tcontext=system_u:object_r:device_t:s0 tclass=chr_file

type=AVC msg=audit(1307125809.403:55): avc:  denied  { open } for 
 pid=1596 comm="gnome-session-c" name="nvidiactl" dev=devtmpfs ino=18991
 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023
 tcontext=system_u:object_r:device_t:s0 tclass=chr_file


>From the recommendations:

# semanage fcontext -a -t SIMILAR_TYPE 'nvidiactl'
# restorecon -v 'nvidiactl'

Currently:

ls -Z /dev/nvidiactl
crw-rw-rw-. root root system_u:object_r:device_t:s0    nvidiactl

ls -Z /usr/libexec/gnome-session-check-accelerated-helper
-rwxr-xr-x. root root system_u:object_r:bin_t:s0       gnome-session-
check-accelerated-helper

So what should the SIMILAR_TYPE be?

I really need to sit down and study the SELinux documents . . . .

Thanks for any pointers.

/mde/