Description of problem:
When starting a domain using kernel/initrd only, i've noticed some weird
behaviour where libvirt is messing with the ownership of the static images.


Version-Release number of selected component (if applicable):
1.1.1-0ubuntu8.5

How reproducible:
Always

Steps to Reproduce:
Define a kernel/initrd-only domain, permissions are correct before starting
the domain.
 $ ls -lah tftpboot/vmlinuz tftpboot/initramfs.cpio.gz
 -rw-rw-r-- 1 eerihug eerihug  11M feb 11 08:53 tftpboot/initramfs.cpio.gz
 -rw-rw-r-- 1 eerihug eerihug 4,4M feb 11 08:53 tftpboot/vmlinuz
 
Now, after the domain is started, libvirt changes ownership to 
libvirt-qemu:kvm
 
$ virsh start Node1
 Domain Node1 started
 
$ ls -lah tftpboot/vmlinuz tftpboot/initramfs.cpio.gz 
 -rw-rw-r-- 1 libvirt-qemu kvm  11M feb 11 08:53 tftpboot/initramfs.cpio.gz
 -rw-rw-r-- 1 libvirt-qemu kvm 4,4M feb 11 08:53 tftpboot/vmlinuz
 

And when the domain is later destroyed, they are claimed by root:root
$ virsh destroy Node1
 Domain Node1 destroyed
 
$ ls -lah tftpboot/vmlinuz tftpboot/initramfs.cpio.gz 
 -rw-rw-r-- 1 root root  11M feb 11 08:53 tftpboot/initramfs.cpio.gz
 -rw-rw-r-- 1 root root 4,4M feb 11 08:53 tftpboot/vmlinuz
 
The initial 664 permission should be enough, and there's no reason for 
libvirt to mess with the ownership of the static images.
 
libvirt version: 1.1.1-0ubuntu8.5
HW used: x86_64 on Intel Core i7-2600
Hypervisor: KVM 
KVM domain logfile for Node1:
 2014-02-11 09:38:08.102+0000: starting up
 LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin /usr/bin/kvm -name Node1 -S -machine pc-0.14,accel=kvm,usb=off -m 1024 -realtime   mlock=off -smp 8,sockets=8,cores=1,threads=1 -uuid 37aed156-6a00-4116-87e9-11ab953a6e8e -nographic -no-user-config -nodefaults -chardev socket,               id=charmonitor,path=/var/lib/libvirt/qemu/Node1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -kernel /   home/eerihug/lab/tftpboot/vmlinuz
 -initrd /home/eerihug/lab/tftpboot/initramfs.cpio.gz -append console=ttyS0,115200 -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -netdev tap,fd=24,     id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=02:00:00:de:ad:01,bus=pci.0,addr=0x8 -chardev pty,id=charserial0 -device isa-serial,                    chardev=charserial0,id=serial0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
 W: kvm binary is deprecated, please use qemu-system-x86_64 instead
 char device redirected to /dev/pts/5 (label charserial0)
 qemu: terminating on signal 15 from pid 1160
 2014-02-11 09:38:55.606+0000: shutting down
 
Additional info, showing the chown's
 $sudo strace -f -p $(pgrep libvirtd) -o strace-log
 [...]
 grep chown strace.log 
 3062  read(5, "chown dac_override dac_read_sear"..., 8143) = 379 
 1161  chown("/home/eerihug/lab/tftpboot/vmlinuz", 117, 125) = 0 
 1161  chown("/home/eerihug/lab/tftpboot/initramfs.cpio.gz", 117, 125) = 0 
 3108  read(5, "chown dac_override dac_read_sear"..., 8143) = 379 
 1164  chown("/home/eerihug/lab/tftpboot/vmlinuz", 0, 0) = 0 
 1164  chown("/home/eerihug/lab/tftpboot/initramfs.cpio.gz", 0, 0) = 0 



Actual results:
Permissions are messed up by libvirt

Expected results:
libvirt should _not_ change permissions of static images

Additional info: