From e2c41e486018ee74f6a75c1f71762234e3f4efd5 Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Fri, 28 Sep 2012 12:57:54 -0600
Subject: [PATCH] storage: match RNG to supported driver types

At one point, the code passed through arbitrary strings for file
formats, which supposedly lets qemu handle a new file type even
before libvirt has been taught to handle it.  However, to properly
label files, libvirt has to learn the file type anyway, so we
might as well make our life easier by only accepting file types
that we are prepared to handle.  This patch lets the RNG validation
ensure that only known strings are let through.

* docs/schemas/domaincommon.rng (driverFormat): Limit to list of
supported strings.
* docs/schemas/domainsnapshot.rng (driver): Likewise.
---
 docs/schemas/domaincommon.rng   | 27 ++++++++++++++++++++++++---
 docs/schemas/domainsnapshot.rng |  2 +-
 2 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 17ad86b907..2beb035035 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1188,11 +1188,32 @@
       <ref name="genericName"/>
     </attribute>
     <optional>
-      <attribute name="type">
-        <ref name="genericName"/>
+      <attribute name='type'>
+        <choice>
+          <ref name='diskFormat'/>
+          <value>aio</value> <!-- back-compat for 'raw' -->
+        </choice>
       </attribute>
     </optional>
   </define>
+  <define name='diskFormat'>
+    <choice>
+      <value>raw</value>
+      <value>dir</value>
+      <value>bochs</value>
+      <value>cloop</value>
+      <value>cow</value>
+      <value>dmg</value>
+      <value>iso</value>
+      <value>qcow</value>
+      <value>qcow2</value>
+      <value>qed</value>
+      <value>vmdk</value>
+      <value>vpc</value>
+      <value>fat</value>
+      <value>vhd</value>
+    </choice>
+  </define>
   <define name="driverCache">
     <attribute name="cache">
       <choice>
@@ -3356,7 +3377,7 @@
       </attribute>
       <optional>
         <attribute name='format'>
-          <ref name="genericName"/>
+          <ref name='diskFormat'/>
         </attribute>
       </optional>
       <optional>
diff --git a/docs/schemas/domainsnapshot.rng b/docs/schemas/domainsnapshot.rng
index 0ef0631246..ecaafe9bae 100644
--- a/docs/schemas/domainsnapshot.rng
+++ b/docs/schemas/domainsnapshot.rng
@@ -105,7 +105,7 @@
               <element name='driver'>
                 <optional>
                   <attribute name='type'>
-                    <ref name='genericName'/>
+                    <ref name='diskFormat'/>
                   </attribute>
                 </optional>
                 <empty/>
-- 
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