<?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>
    </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='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'/>
      </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>
    </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>
