XFree86 and SELinux on PPC

[W. Michael Petullo]

On Sun, Apr 11, 2004 at 07:43:45AM -0500, W. Michael Petullo wrote:
> On my PowerPC-based system, x.org's server wishes to access /proc/sys/dev
> (probably for mac_hid/mouse emulation) and /proc/bus/pci.  When I set
> SELinux to enforce, these operations are blocked and X does not start.
> 
> Here are the relavent logs:
> 
> avc:  denied  { search } for  pid=1504 exe=/usr/X11R6/bin/XFree86 name=dev dev=
> ino=5303 scontext=system_u:system_r:xdm_xserver_t tcontext=system_u:object_r:sysctl_dev_t tclass=dir
>                                                                                 
> avc:  denied  { getattr } for  pid=1504 exe=/usr/X11R6/bin/XFree86 path=/proc/bus/pci dev= ino=5458 scontext=system_u:system_r:xdm_xserver_t tcontext=system_u:object_r:proc_t tclass=dir
> 
> Does x86's X server not touch these directories?  I assume this policy
> works on x86.  I'd be happy to throw this in bugzilla.

Adding the following to xserver_macros.te gets X to load on PowerPC:

# Access /proc/bus/pci
allow $1_xserver_t proc_t:dir { getattr read };

However, I don't know if this is the correct way to do this.  I'm not
even sure exactly why X is trying to read from /proc/bus/pci.

-- 
Mike

:wq