Move libvirt usages of chown to privsep.

A nice simple example of how to move things to privsep (and the new set
of helpers). In a few of these cases I think a more complicated re-write
is actually required, but I've put TODOs there are will do those in a
followup patch.

Change-Id: Ibb6ef001e3f2add459b0e37dfbd9f51c9eff2eb7

1 files changed, 0 insertions, 33 deletions

diff --git a/nova/virt/libvirt/utils.py b/nova/virt/libvirt/utils.py
index a87d2328f5..395dcae1ce 100644
--- a/nova/virt/libvirt/utils.py
+++ b/nova/virt/libvirt/utils.py
@@ -253,15 +253,6 @@ def write_to_file(path, contents, umask=None):
             os.umask(saved_umask)
 
 
-def chown(path, owner):
-    """Change ownership of file or directory
-
-    :param path: File or directory whose ownership to change
-    :param owner: Desired new owner (given as uid or username)
-    """
-    utils.execute('chown', owner, path, run_as_root=True)
-
-
 def update_mtime(path):
     """Touch a file without being the owner.
 
@@ -529,27 +520,3 @@ def is_mounted(mount_path, source=None):
 
 def is_valid_hostname(hostname):
     return re.match(r"^[\w\-\.:]+$", hostname)
-
-
-def last_bytes(file_like_object, num):
-    """Return num bytes from the end of the file, and remaining byte count.
-
-    :param file_like_object: The file to read
-    :param num: The number of bytes to return
-
-    :returns: (data, remaining)
-    """
-
-    try:
-        file_like_object.seek(-num, os.SEEK_END)
-    except IOError as e:
-        # seek() fails with EINVAL when trying to go before the start of
-        # the file. It means that num is larger than the file size, so
-        # just go to the start.
-        if e.errno == errno.EINVAL:
-            file_like_object.seek(0, os.SEEK_SET)
-        else:
-            raise
-
-    remaining = file_like_object.tell()
-    return (file_like_object.read(), remaining)