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• Command
• File write

Command

This executable can run non-interactive system commands.

• Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  cat >/path/to/temp-file.xml <<EOF
  <domain type='kvm'>
    <name>x</name>
    <os>
      <type arch='x86_64'>hvm</type>
    </os>
    <memory unit='KiB'>1</memory>
    <devices>
      <interface type='ethernet'>
        <script path='/path/to/command'/>
      </interface>
    </devices>
  </domain>
  EOF
  virsh -c qemu:///system create /path/to/temp-file.xml
  virsh -c qemu:///system destroy x

File write

This executable can write data to local files.

• Comment

  This requires the user to be in the libvirt group. If the target directory doesn’t exist, pool-create-as must be run with the --build option. The destination file ownership and permissions can be set in the XML.

  Unprivileged

  This function can be performed by any unprivileged user.

  echo DATA >/path/to/temp-file
  
  cat >/path/to/temp-file.xml <<EOF
  <volume type='file'>
    <name>y</name>
    <key>/path/to/output-dir/output-file</key>
    <source>
    </source>
    <capacity unit='bytes'>5</capacity>
    <allocation unit='bytes'>4096</allocation>
    <physical unit='bytes'>5</physical>
    <target>
      <path>/path/to/output-dir/output-file</path>
      <format type='raw'/>
      <permissions>
        <mode>0600</mode>
        <owner>0</owner>
        <group>0</group>
      </permissions>
    </target>
  </volume>
  EOF
  
  virsh -c qemu:///system pool-create-as x dir --target /path/to/output-dir/
  virsh -c qemu:///system vol-create --pool x --file /path/to/temp-file.xml
  virsh -c qemu:///system vol-upload --pool x /path/to/output-dir/output-file /path/to/temp-file
  virsh -c qemu:///system pool-destroy x

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  echo DATA >/path/to/temp-file
  
  cat >/path/to/temp-file.xml <<EOF
  <volume type='file'>
    <name>y</name>
    <key>/path/to/output-dir/output-file</key>
    <source>
    </source>
    <capacity unit='bytes'>5</capacity>
    <allocation unit='bytes'>4096</allocation>
    <physical unit='bytes'>5</physical>
    <target>
      <path>/path/to/output-dir/output-file</path>
      <format type='raw'/>
      <permissions>
        <mode>0600</mode>
        <owner>0</owner>
        <group>0</group>
      </permissions>
    </target>
  </volume>
  EOF
  
  virsh -c qemu:///system pool-create-as x dir --target /path/to/output-dir/
  virsh -c qemu:///system vol-create --pool x --file /path/to/temp-file.xml
  virsh -c qemu:///system vol-upload --pool x /path/to/output-dir/output-file /path/to/temp-file
  virsh -c qemu:///system pool-destroy x

• Comment

  This requires the user to be in the libvirt group.

  Unprivileged

  This function can be performed by any unprivileged user.

  virsh -c qemu:///system pool-create-as x dir --target /path/to/dir/
  virsh -c qemu:///system vol-download --pool x input-file output-file
  virsh -c qemu:///system pool-destroy x

  Sudo

  This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.

  Remarks

  If there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....

  virsh -c qemu:///system pool-create-as x dir --target /path/to/dir/
  virsh -c qemu:///system vol-download --pool x input-file output-file
  virsh -c qemu:///system pool-destroy x

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