Description of problem:
a directory with sticky bit set, allows to create a new file with UID:GID as root:root while trying to rename a file inside it.

Version-Release number of selected component (if applicable):
glusterfs-3.4.0.1rhs-1.el6rhs.x86_64

How reproducible:
always

Steps to Reproduce:
1. Create dist-rep volume; start the volume
2. create directory "dir"
3. chmod 1777 dir

[root@rhsauto020 nfs-test]# ls -l
total 31457281
-rw-r--r--. 1 root root 32212254732 Apr 25 17:34 30GBfile
drwxrwxrwt. 2 root root         138 Apr 25 18:39 dir
drwxr-xr-x. 2 root root          36 Apr 25 18:32 dir1

4. create files inside this "dir"

[root@rhsauto020 nfs-test]# ls -l dir/
total 0
-rw-r--r--. 1 root root 0 Apr 25 18:33 file1
-rwxrwxrwx. 1 root root 0 Apr 25 18:33 file2


5. enable root-squash

[root@rhs-goldman1 ~]# ./root-squash-enable.sh 
VOLNAME:dist-rep
volume set: success

6. mv dir/file1 dir/file11
   or
   mv dir/file2 dir/file22
  
Actual results:

[root@rhsauto020 nfs-test]# mv dir/file1 dir/file11
[root@rhsauto020 nfs-test]# ls -l dir/
total 0
-rw-r--r--. 2 root root 0 Apr 25 18:33 file1
-rw-r--r--. 2 root root 0 Apr 25 18:33 file11
-rwxrwxrwx. 1 root root 0 Apr 25 18:33 file2
[root@rhsauto020 nfs-test]# mv dir/file2 dir/file22
[root@rhsauto020 nfs-test]# ls -l dir/
total 0
-rw-r--r--. 2 root root 0 Apr 25 18:33 file1
-rw-r--r--. 2 root root 0 Apr 25 18:33 file11
-rwxrwxrwx. 2 root root 0 Apr 25 18:33 file2
-rwxrwxrwx. 2 root root 0 Apr 25 18:33 file22



[root@rhsauto020 dir]# touch file3
[root@rhsauto020 dir]# ls -l
total 0
-rw-r--r--. 2 root      root      0 Apr 25 18:33 file1
-rw-r--r--. 2 root      root      0 Apr 25 18:33 file11
-rwxrwxrwx. 2 root      root      0 Apr 25 18:33 file2
-rwxrwxrwx. 2 root      root      0 Apr 25 18:33 file22
-rw-r--r--. 1 nfsnobody nfsnobody 0 Apr 25 18:34 file3

Expected results:
Permission should be denied to rename.

Additional info: