[Xen-changelog] Cope with missing configuration information inside the configuration method.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User emellor@ewan
# Node ID 625c75a223fe0c7f63a048a89bb914096b88f74d
# Parent  7f42935cb4b0befbd89f4e4d14c4f169f7880e26
Cope with missing configuration information inside the configuration method.
This allows us to better recover if the store has been deleted.

Signed-off-by: Ewan Mellor <ewan@xxxxxxxxxxxxx>

diff -r 7f42935cb4b0 -r 625c75a223fe tools/python/xen/xend/server/blkif.py
--- a/tools/python/xen/xend/server/blkif.py     Tue Oct  4 01:25:04 2005
+++ b/tools/python/xen/xend/server/blkif.py     Tue Oct  4 01:28:41 2005
@@ -69,8 +69,10 @@
                                                   'dev', 'type', 'params',
                                                   'read-only')
 
-        result.append(['dev', dev])
-        result.append(['uname', typ + ":" + params])
+        if dev:
+            result.append(['dev', dev])
+        if typ and params:
+            result.append(['uname', typ + ":" + params])
         if ro:
             result.append(['mode', 'r'])
         else:
diff -r 7f42935cb4b0 -r 625c75a223fe tools/python/xen/xend/server/netif.py
--- a/tools/python/xen/xend/server/netif.py     Tue Oct  4 01:25:04 2005
+++ b/tools/python/xen/xend/server/netif.py     Tue Oct  4 01:28:41 2005
@@ -80,11 +80,15 @@
                                                      'script', 'ip', 'bridge',
                                                      'mac')
 
-        result.append(['script',
-                       script.replace(xroot.network_script_dir + os.sep, "")])
+        if script:
+            result.append(['script',
+                           script.replace(xroot.network_script_dir + os.sep,
+                                          "")])
         if ip:
             result.append(['ip', ip.split(" ")])
-        result.append(['bridge', bridge])
-        result.append(['mac', mac])
+        if bridge:
+            result.append(['bridge', bridge])
+        if mac:
+            result.append(['mac', mac])
 
         return result

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