<?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>
          <value>luks2</value>
          <value>luks-any</value>
        </choice>
      </attribute>
      <optional>
        <attribute name="engine">
          <choice>
            <value>qemu</value>
            <value>librbd</value>
          </choice>
        </attribute>
      </optional>
      <optional>
        <interleave>
          <oneOrMore>
            <ref name="secret"/>
          </oneOrMore>
          <optional>
            <interleave>
              <element name="cipher">
                <ref name="keycipher"/>
              </element>
              <element name="ivgen">
                <ref name="keyivgen"/>
              </element>
            </interleave>
          </optional>
        </interleave>
      </optional>
    </element>
  </define>

  <define name="initiatorinfo">
    <element name="initiator">
      <element name="iqn">
        <attribute name="name">
          <text/>
        </attribute>
        <empty/>
      </element>
    </element>
  </define>

  <define name="reconnect">
    <element name="reconnect">
      <choice>
        <group>
          <attribute name="enabled">
            <ref name="virYesNo"/>
          </attribute>
          <optional>
            <attribute name="timeout">
              <ref name="unsignedInt"/>
            </attribute>
          </optional>
        </group>
        <attribute name="delay">
          <ref name="unsignedInt"/>
        </attribute>
      </choice>
    </element>
  </define>

  <define name="unixSocketSource">
    <element name="source">
      <attribute name="type">
        <value>unix</value>
      </attribute>
      <attribute name="path">
        <ref name="absFilePath"/>
      </attribute>
      <attribute name="mode">
        <choice>
          <value>server</value>
          <value>client</value>
        </choice>
      </attribute>
      <optional>
         <ref name="reconnect"/>
      </optional>
      <empty/>
    </element>
  </define>

  <define name="reservations">
    <element name="reservations">
      <optional>
        <attribute name="managed">
          <ref name="virYesNo"/>
        </attribute>
      </optional>
      <optional>
        <ref name="unixSocketSource"/>
      </optional>
    </element>
  </define>

  <define name="secret">
    <element name="secret">
      <attribute name="type">
        <value>passphrase</value>
      </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="clusterSize">
    <element name="clusterSize">
      <ref name="scaledInteger"/>
    </element>
  </define>

  <define name="fileFormatFeatures">
    <element name="features">
      <interleave>
        <optional>
          <element name="lazy_refcounts">
            <empty/>
          </element>
        </optional>
        <optional>
          <element name="extended_l2">
            <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>

  <define name="refreshVolumeAllocation">
    <choice>
      <value>default</value>
      <value>capacity</value>
    </choice>
  </define>

</grammar>
