Description of problem:
I'm running a localhost httpd server and I need write on a ttyUSB0 port (its my device who will receive an information).
The PHP class open the port and send the serial information to my device and close the connection

When I try to run, the SELinux don't let the command go to my device.


Additional info:
libreport version: 2.0.18
kernel:         3.6.7-4.fc17.i686

description:
:SELinux is preventing /usr/bin/stty from 'ioctl' accesses on the chr_file /dev/ttyUSB0.
:
:*****  Plugin catchall (100. confidence) suggests  ***************************
:
:If you believe that stty should be allowed ioctl access on the ttyUSB0 chr_file 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 stty /var/log/audit/audit.log | audit2allow -M mypol
:# semodule -i mypol.pp
:
:Additional Information:
:Source Context                system_u:system_r:httpd_t:s0
:Target Context                system_u:object_r:usbtty_device_t:s0
:Target Objects                /dev/ttyUSB0 [ chr_file ]
:Source                        stty
:Source Path                   /usr/bin/stty
:Port                          <Unknown>
:Host                          (removed)
:Source RPM Packages           coreutils-8.15-8.fc17.i686
:Target RPM Packages           
:Policy RPM                    selinux-policy-3.10.0-159.fc17.noarch
:Selinux Enabled               True
:Policy Type                   targeted
:Enforcing Mode                Enforcing
:Host Name                     (removed)
:Platform                      Linux (removed) 3.6.7-4.fc17.i686 #1 SMP Tue Nov
:                              20 20:13:04 UTC 2012 i686 i686
:Alert Count                   3
:First Seen                    2012-11-22 11:32:39 BRST
:Last Seen                     2012-11-22 11:37:34 BRST
:Local ID                      89f99c32-2793-406f-97b5-73ecaddcf6e4
:
:Raw Audit Messages
:type=AVC msg=audit(1353591454.416:142): avc:  denied  { ioctl } for  pid=2968 comm="stty" path="/dev/ttyUSB0" dev="devtmpfs" ino=10186 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:usbtty_device_t:s0 tclass=chr_file
:
:
:type=SYSCALL msg=audit(1353591454.416:142): arch=i386 syscall=ioctl success=no exit=EACCES a0=0 a1=5401 a2=bfe07f08 a3=bfe07fb4 items=0 ppid=2887 pid=2968 auid=4294967295 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=4294967295 comm=stty exe=/usr/bin/stty subj=system_u:system_r:httpd_t:s0 key=(null)
:
:Hash: stty,httpd_t,usbtty_device_t,chr_file,ioctl
:
:audit2allow
:
:#============= httpd_t ==============
:allow httpd_t usbtty_device_t:chr_file ioctl;
:
:audit2allow -R
:
:#============= httpd_t ==============
:allow httpd_t usbtty_device_t:chr_file ioctl;
: