<?xml version="1.0"?>
<!-- A Relax NG schema for the libvirt storage volume XML format -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
    datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
  <include href="basictypes.rng"/>
  <start>
    <ref name="vol"/>
  </start>

  <include href="storagecommon.rng"/>


  <define name="vol">
    <element name="volume">
      <optional>
        <attribute name="type">
          <choice>
            <value>file</value>
            <value>block</value>
            <value>dir</value>
            <value>network</value>
            <value>netdir</value>
          </choice>
        </attribute>
      </optional>
      <interleave>
        <element name="name">
          <ref name="volName"/>
        </element>
        <optional>
          <element name="key">
            <text/>
          </element>
        </optional>
        <optional>
          <ref name="source"/>
        </optional>
        <ref name="sizing"/>
        <ref name="target"/>
        <optional>
          <ref name="backingStore"/>
        </optional>
      </interleave>
    </element>
  </define>

  <define name="sizing">
    <interleave>
      <optional>
        <element name="capacity">
          <ref name="scaledInteger"/>
        </element>
      </optional>
      <optional>
        <element name="allocation">
          <ref name="scaledInteger"/>
        </element>
      </optional>
      <optional>
        <element name="physical">
          <ref name="scaledInteger"/>
        </element>
      </optional>
    </interleave>
  </define>

  <define name="timestamps">
    <optional>
      <element name="timestamps">
        <interleave>
          <optional>
            <element name="atime">
              <ref name="timestamp"/>
            </element>
          </optional>
          <optional>
            <element name="btime">
              <ref name="timestamp"/>
            </element>
          </optional>
          <optional>
            <element name="ctime">
              <ref name="timestamp"/>
            </element>
          </optional>
          <optional>
            <element name="mtime">
              <ref name="timestamp"/>
            </element>
          </optional>
        </interleave>
      </element>
    </optional>
  </define>

  <define name="timestamp">
    <data type="string">
      <param name="pattern">[0-9]+(\.[0-9]{0,9})?</param>
    </data>
  </define>

  <define name="target">
    <element name="target">
      <interleave>
        <optional>
          <element name="path">
            <choice>
              <data type="anyURI"/>
              <ref name="absFilePath"/>
            </choice>
          </element>
        </optional>
        <ref name="format"/>
        <ref name="permissions"/>
        <ref name="timestamps"/>
        <optional>
          <ref name="encryption"/>
        </optional>
        <optional>
          <ref name="compat"/>
        </optional>
        <optional>
          <element name="nocow">
            <empty/>
          </element>
        </optional>
        <optional>
          <ref name="clusterSize"/>
        </optional>
        <optional>
          <ref name="fileFormatFeatures"/>
        </optional>
      </interleave>
    </element>
  </define>

  <define name="backingStore">
    <element name="backingStore">
      <interleave>
        <element name="path">
          <ref name="absFilePath"/>
        </element>
        <ref name="format"/>
        <ref name="permissions"/>
        <ref name="timestamps"/>
      </interleave>
    </element>
  </define>


  <define name="source">
    <element name="source">
      <zeroOrMore>
        <ref name="sourcedev"/>
      </zeroOrMore>
    </element>
  </define>

  <define name="sourcedev">
    <element name="device">
      <attribute name="path">
        <ref name="absFilePath"/>
      </attribute>
      <choice>
        <empty/>
        <ref name="devextents"/>
      </choice>
    </element>
  </define>

  <define name="devextents">
    <oneOrMore>
      <element name="extent">
        <attribute name="start">
          <ref name="unsignedLong"/>
        </attribute>
        <attribute name="end">
          <ref name="unsignedLong"/>
        </attribute>
      </element>
    </oneOrMore>
  </define>

  <define name="formatdev">
    <choice>
      <value>none</value>
      <value>auto</value>
      <value>ext2</value>
      <value>ext3</value>
      <value>ext4</value>
      <value>ufs</value>
      <value>iso9660</value>
      <value>udf</value>
      <value>gfs</value>
      <value>gfs2</value>
      <value>vfat</value>
      <value>hfs+</value>
      <value>xfs</value>
      <value>ocfs2</value>
      <value>vmfs</value>
    </choice>
  </define>

  <define name="formatfile">
    <choice>
      <value>unknown</value>
      <ref name="storageFormat"/>
    </choice>
  </define>

  <define name="formatdisk">
    <choice>
      <value>none</value>
      <value>linux</value>
      <value>fat16</value>
      <value>fat32</value>
      <value>linux-swap</value>
      <value>linux-lvm</value>
      <value>linux-raid</value>
      <value>extended</value>
    </choice>
  </define>

  <define name="format">
    <optional>
      <element name="format">
        <attribute name="type">
          <choice>
            <ref name="formatfile"/>
            <ref name="formatdev"/>
            <ref name="formatdisk"/>
          </choice>
        </attribute>
      </element>
    </optional>
  </define>

</grammar>
