The core of the SMF is a manifest which is an XML file that describes what a service is and how to start stop and reload it. Here is an example for rwhod (rwhod.xml):

<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
<service_bundle type="manifest" name="rwhod">
  <service name="network/rwhod" type="service" version="4">
    <create_default_instance enabled="false"/>
    <single_instance/>
    <!--
    If there's no network, then there's no point in running 
    -->
    <dependency
      name="loopback"
      grouping="require_all"
      restart_on="error"
      type="service">
      <service_fmri value="svc:/network/loopback:default"/>
    </dependency>
    <dependency
      name="physical"
      grouping="require_all"
      restart_on="error"
      type="service">
      <service_fmri value="svc:/network/physical:default"/>
    </dependency>
    <dependency
      name="fs-local"
      grouping="require_all"
      restart_on="none"
      type="service">
      <service_fmri value="svc:/system/filesystem/local"/>
    </dependency>
    <exec_method
      type="method"
      name="start"
      exec="/usr/sbin/in.rwhod"
      timeout_seconds="60"/>
    <exec_method
      type="method"
      name="stop"
      exec=":kill"
      timeout_seconds="60"/>
    <stability value="Unstable"/>
    <template>
      <common_name>
        <loctext xml:lang="C">RWho daemon</loctext>
      </common_name>
      <documentation>
        <manpage title="in.rwho" section="1M"/>
      </documentation>
    </template>
  </service>
</service_bundle>

This is a basic manifest that lists a set of preconditions that must be satisfied before starting and a set of methods for stopping and starting the service.

Once the manifest is created it is imported using the command:

   svccfg import rwhod.xml

And started with the command:

   svcadm enable sec:/network/rwho:default

Tags: Solaris, OpenSolaris, SMF