Bug 550747

Summary:

SELinux prevented pt_chown from using the terminal 2.

Detailed Description:

SELinux prevented pt_chown from using the terminal 2. In most cases daemons do
not need to interact with the terminal, usually these avc messages can be
ignored. All of the confined daemons should have dontaudit rules around using
the terminal. Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this selinux-policy.
If you would like to allow all daemons to interact with the terminal, you can
turn on the allow_daemons_use_tty boolean.

Allowing Access:

Changing the "allow_daemons_use_tty" boolean to true will allow this access:
"setsebool -P allow_daemons_use_tty=1."

Fix Command:

setsebool -P allow_daemons_use_tty=1

Additional Information:

Source Context                system_u:system_r:svirt_t:s0:c702,c961
Target Context                system_u:object_r:devpts_t:s0:c702,c961
Target Objects                2 [ chr_file ]
Source                        qemu-system-x86
Source Path                   /usr/bin/qemu-system-x86_64
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           glibc-common-2.10.1-5
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.12-85.fc11
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_daemons_use_tty
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.30.8-64.fc11.i686.PAE #1 SMP Fri Sep 25
                              04:56:58 EDT 2009 i686 i686
Alert Count                   2
First Seen                    Thu 22 Oct 2009 18:01:24 CEST
Last Seen                     Thu 22 Oct 2009 18:01:24 CEST
Local ID                      ba1920ad-a388-4d1b-aca1-417e08f21307
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1256227284.627:432): avc:  denied  { setattr } for  pid=3105 comm="pt_chown" name="2" dev=devpts ino=5 scontext=system_u:system_r:svirt_t:s0:c702,c961 tcontext=system_u:object_r:devpts_t:s0:c702,c961 tclass=chr_file

node=(removed) type=SYSCALL msg=audit(1256227284.627:432): arch=40000003 syscall=212 success=no exit=-13 a0=bcf4e8 a1=0 a2=5 a3=bcf4e8 items=0 ppid=3103 pid=3105 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="pt_chown" exe="/usr/libexec/pt_chown" subj=system_u:system_r:svirt_t:s0:c702,c961 key=(null)



Hash String generated from  selinux-policy-3.6.12-85.fc11,allow_daemons_use_tty,qemu-system-x86,svirt_t,devpts_t,chr_file,setattr
audit2allow suggests:

#============= svirt_t ==============
allow svirt_t devpts_t:chr_file setattr;