00_info.md

So, to get something like /etc/rc.local you can use the custom SMF import facility. (See the source for more information about how this actually works.)

/opt is mounted out of zones/opt by default. You can create a directory /opt/custom/smf and populate it with SMF manifests. Any manifests you put in there will be imported by SmartOS when it boots. Below is an example SMF manifest that simply starts /opt/custom/bin/postboot, a self-explanatory shell script that you can use like /etc/rc.local.

Note that it would likely be better to customise and respin your own images, as putting a bunch of platform state in the zones pool undoes some of the benefits of the ramdisk platform architecture that SmartOS has.

opt.custom.bin.postboot

#!/bin/ksh

hostname $(</opt/custom/etc/nodename)
cp /opt/custom/etc/nodename /etc/nodename

opt.custom.smf.postboot.xml

<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">

<service_bundle type='manifest' name='site:postboot'>
<service
        name='site/postboot'
        type='service'
        version='1'>

        <create_default_instance enabled='true' />

        <single_instance />

        <dependency
                name='fs-root'
                grouping='require_all'
                restart_on='none'
                type='service'>
                <service_fmri value='svc:/system/filesystem/root' />
        </dependency>

        <exec_method
                type='method'
                name='start'
                exec='/opt/custom/bin/postboot'
                timeout_seconds='0'>
        </exec_method>

        <exec_method
                type='method'
                name='stop'
                exec=':true'
                timeout_seconds='0'>
        </exec_method>

        <property_group name='startd' type='framework'>
                <propval name='duration' type='astring' value='transient' />
        </property_group>

        <stability value='Unstable' />

</service>
</service_bundle>