/usr/share/libvirt/schemas/storageencryption.rng is in libvirt-bin 0.9.8-2ubuntu17.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | <!-- A Relax NG schema for the libvirt volume encryption XML format -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
<define name='encryption'>
<element name='encryption'>
<attribute name='format'>
<choice>
<value>default</value>
<value>qcow</value>
</choice>
</attribute>
<zeroOrMore>
<ref name='secret'/>
</zeroOrMore>
</element>
</define>
<define name='secret'>
<element name='secret'>
<attribute name='type'>
<choice>
<value>passphrase</value>
</choice>
</attribute>
<attribute name='uuid'>
<ref name="UUID"/>
</attribute>
</element>
</define>
</grammar>
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