pull in the rework of /var/lib/cloud.

- /var/lib/cloud is redesigned, and its layout now described in
  doc/var-lib-cloud.txt.
  The big plus point of this was to get instance specific data
  into /var/lib/cloud/instances, so that data could easily be purged.

  A symlink /var/lib/cloud/instance -> /var/lib/cloud/instances/<current_id>
  is maintained.

- Also, now run scripts in /var/lib/cloud/scripts/
   per-once
   per-boot
   per-instance

- bugs addressed:
  - LP: #704509

1 files changed, 28 insertions, 0 deletions

diff --git a/cloudinit/util.py b/cloudinit/util.py
index d5ae2bec..a2291164 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -278,3 +278,31 @@ def read_cc_from_cmdline(cmdline=None):
         begin = cmdline.find(tag_begin, end + end_l)
 
     return('\n'.join(tokens))
+
+def ensure_dirs(dirlist, mode=0755):
+    fixmodes = []
+    for d in dirlist:
+        try:
+            if mode != None:
+                os.makedirs(d)
+            else:
+                os.makedirs(d, mode)
+        except OSError as e:
+            if e.errno != errno.EEXIST: raise
+            if mode != None: fixmodes.append(d)
+
+    for d in fixmodes:
+        os.chmod(d, mode)
+
+def chownbyname(fname,user=None,group=None):
+   uid = -1
+   gid = -1
+   if user == None and group == None: return
+   if user:
+      import pwd
+      uid = pwd.getpwnam(user).pw_uid
+   if group:
+      import grp
+      gid = grp.getgrnam(group).gr_gid
+
+   os.chown(fname,uid,gid)