Description of problem:
SELinux is preventing /usr/sbin/lightdm from 'write' accesses on the directory /.

*****  Plugin catchall (100. confidence) suggests  ***************************

If you believe that lightdm should be allowed write access on the  directory by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep lightdm /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:autofs_t:s0
Target Objects                / [ dir ]
Source                        lightdm
Source Path                   /usr/sbin/lightdm
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           lightdm-1.4.1-3.fc18.x86_64
Target RPM Packages           filesystem-3.1-2.fc18.x86_64
Policy RPM                    selinux-policy-3.11.1-92.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.9.2-0.rc1.200.fc18.x86_64 #1 SMP
                              Fri May 10 16:44:27 UTC 2013 x86_64 x86_64
Alert Count                   2
First Seen                    2013-05-12 13:55:06 IST
Last Seen                     2013-05-12 12:55:37 IST
Local ID                      6341bce1-1414-4ecc-8acd-017f310117a8

Raw Audit Messages
type=AVC msg=audit(1368359737.763:62): avc:  denied  { write } for  pid=950 comm="lightdm" name="/" dev="autofs" ino=18092 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:autofs_t:s0 tclass=dir


type=SYSCALL msg=audit(1368359737.763:62): arch=x86_64 syscall=mkdir success=no exit=EACCES a0=8e3d30 a1=1c0 a2=8e3d42 a3=6361632f7261762f items=0 ppid=1 pid=950 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=lightdm exe=/usr/sbin/lightdm subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)

Hash: lightdm,xdm_t,autofs_t,dir,write

audit2allow

#============= xdm_t ==============
allow xdm_t autofs_t:dir write;

audit2allow -R
require {
	type xdm_t;
}

#============= xdm_t ==============
fs_manage_auto_mountpoints(xdm_t)


Additional info:
reporter:       libreport-2.1.4.8.gd975
hashmarkername: setroubleshoot
kernel:         3.9.2-0.rc1.200.fc18.x86_64
type:           libreport