conary: when exiting chroot, make sure to return to old root.

[David Christian]

tag:         tip
user:        David Christian <http://bugs.rpath.com>
files:       conary/files.py

when exiting chroot, make sure to return to old root.  
Use os.chdir('/') before os.chroot(<newroot>) so os.chroot('.') will exit chroot

diff -r aa7df1257e2a -r 7c31a0bfcef6 conary/files.py
--- a/conary/files.py	Mon Dec  5 15:02:03 2005
+++ b/conary/files.py	Mon Dec  5 15:08:06 2005
@@ -702,8 +702,9 @@
 
 	if root and root != '/':
 	    curDir = os.open(".", os.O_RDONLY)
-            # this doesn't chdir into the root to allow us to chroot
+            # chdir to the current root to allow us to chroot
             # back out again
+            os.chdir('/')
 	    os.chroot(root)
 	
 	try: