Description of problem:
when we do bug-reverification for bug 911569 that it fail in the latest qemu-kvm & selinux.

Version-Release number of selected component (if applicable):
host info:
2.6.32-429.el6.x86_64
qemu-kvm-0.12.1.2-2.415.el6.x86_64
guest info:
qemu-guest-agent-0.12.1.2-2.415.el6.x86_64
selinux-policy-3.7.19-231.el6.noarch
selinux-policy-targeted-3.7.19-231.el6.noarch

How reproducible:
100%

Steps to Reproduce:
1.Start guest with virtio serial.
e.g:# /usr/libexec/qemu-kvm -S -M rhel6.5.0 ... -chardev socket,path=/tmp/qga.sock,server,nowait,id=qga0 -device virtio-serial -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0
2.install qemu-guest agent package in guest.
3.set FSFREEZE_HOOK_ENABLE=1 for /etc/sysconfig/qemu-ga in guest.
4.added a simple user script in guest.
# cat /usr/libexec/qemu-ga/fsfreeze-hook.d/sample.sh
#!/bin/bash
echo "$0:" "$@"
5.# chmod 777 usr/libexec/qemu-ga/fsfreeze-hook.d/sample.sh
6.Reboot guest to make the configuration effect.
7.Start guest agent with fsfreeze hook enabled inside guest.
# qemu-ga -F on
8.Connect the chardev socket in host side for sending commands to guest.
# nc -U /tmp/qga.sock readline
{"execute":"guest-fsfreeze-freeze" }
{"execute":"guest-fsfreeze-thaw"}

Actual results:
no matter selinux is Enforcing or Permissive, the "guest-fsfreeze-freeze" can run correctly.
# nc -U /tmp/qga.sock readline
{"execute":"guest-fsfreeze-thaw"}
{"return": 2}
{"execute":"guest-fsfreeze-thaw"}
{"return": 2}

Expected results:
after step 8, test it with SELINUX = Enforcing|Permissive status.
- I.SELINUX = Enforcing:
# getenforce 
Enforcing
{"execute":"guest-fsfreeze-status"}
{"return": "thawed"}
{"execute":"guest-fsfreeze-freeze" }
{"error": {"class": "GenericError", "desc": "can't access fsfreeze hook '/usr/libexec/qemu-ga/fsfreeze-hook': Permission denied", "data": {"message": "can't access fsfreeze hook '/usr/libexec/qemu-ga/fsfreeze-hook': Permission denied"}}}
- II.SELINUX = Permissive
# setenforce 0
# getenforce 
Permissive
{"execute":"guest-fsfreeze-status"}
{"return": "thawed"}
{"execute":"guest-fsfreeze-freeze" }
{"return": 2}
{"execute":"guest-fsfreeze-status"}
{"return": "frozen"}
{"execute":"guest-fsfreeze-thaw"}
{"return": 2}
{"execute":"guest-fsfreeze-status"}
{"return": "thawed"}

Additional info: