<?xml version="1.0"?>
<!-- A Relax NG schema for common libvirt XML storage elements -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
    datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

  <!-- This schema is not designed for standalone use; another file
       must include both this file and basictypes.rng -->

  <define name='encryption'>
    <element name='encryption'>
      <attribute name='format'>
        <choice>
          <value>default</value>
          <value>qcow</value>
          <value>luks</value>
        </choice>
      </attribute>
      <interleave>
        <zeroOrMore>
          <ref name='secret'/>
        </zeroOrMore>
        <optional>
          <element name='cipher'>
            <ref name='keycipher'/>
          </element>
          <element name='ivgen'>
            <ref name='keyivgen'/>
          </element>
        </optional>
      </interleave>
    </element>
  </define>

  <define name='secret'>
    <element name='secret'>
      <attribute name='type'>
        <choice>
          <value>passphrase</value>
        </choice>
      </attribute>
      <choice>
        <attribute name='uuid'>
          <ref name="UUID"/>
        </attribute>
        <attribute name='usage'>
          <text/>
        </attribute>
      </choice>
    </element>
  </define>

  <define name='compat'>
    <element name='compat'>
      <data type='string'>
        <param name='pattern'>[0-9]+\.[0-9]+</param>
      </data>
    </element>
  </define>
  <define name='fileFormatFeatures'>
    <element name='features'>
      <interleave>
        <optional>
          <element name='lazy_refcounts'>
            <empty/>
          </element>
        </optional>
      </interleave>
    </element>
  </define>

  <!-- split the list of known storage formats into two, those where
       we know how to follow backing chains, and all others -->
  <define name='storageFormatBacking'>
    <choice>
      <value>cow</value>
      <value>qcow</value>
      <value>qcow2</value>
      <value>qed</value>
      <value>vmdk</value>
    </choice>
  </define>
  <define name='storageFormat'>
    <choice>
      <value>raw</value>
      <value>dir</value>
      <value>bochs</value>
      <value>cloop</value>
      <value>dmg</value>
      <value>iso</value>
      <value>vpc</value>
      <value>vdi</value>
      <value>fat</value>
      <value>vhd</value>
      <value>ploop</value>
      <value>luks</value>
      <ref name='storageFormatBacking'/>
    </choice>
  </define>

  <define name='storageStartupPolicy'>
    <!-- Use a combine='choice' override in client files that want to
         add additional attributes to a <source> sub-element
         associated with a storage source -->
    <notAllowed/>
  </define>

  <define name='storageSourceExtra'>
    <!-- Use a combine='choice' override in client files that want to
         add additional elements as siblings of a <source> sub-element
         associated with a storage source -->
    <notAllowed/>
  </define>

  <define name='permissions'>
    <optional>
      <element name='permissions'>
        <interleave>
          <optional>
            <element name='mode'>
              <ref name='octalMode'/>
            </element>
          </optional>
          <optional>
            <element name='owner'>
              <choice>
                <ref name='unsignedInt'/>
                <value>-1</value>
              </choice>
            </element>
          </optional>
          <optional>
            <element name='group'>
              <choice>
                <ref name='unsignedInt'/>
                <value>-1</value>
              </choice>
            </element>
          </optional>
          <optional>
            <element name='label'>
              <text/>
            </element>
          </optional>
        </interleave>
      </element>
    </optional>
  </define>

  <define name='keycipher'>
    <attribute name='name'>
      <text/>
    </attribute>
    <attribute name='size'>
      <ref name="unsignedInt"/>
    </attribute>
    <optional>
      <attribute name='mode'>
        <text/>
      </attribute>
      <attribute name='hash'>
        <text/>
      </attribute>
    </optional>
  </define>

  <define name='keyivgen'>
    <attribute name='name'>
      <text/>
    </attribute>
    <optional>
      <attribute name='hash'>
        <text/>
      </attribute>
    </optional>
  </define>

</grammar>
