Disable multitenant plugin, theme, core access

add-to-master-config.php

<?php

define('MASTER_INSTALL', true);

add-to-tenant-config.php

<?php

define( 'WP_CONTENT_DIR', __DIR__.'/wp-content' );

bash-script

mv wp-config.php tenant-config.php && \
rm -rf wp-admin && \
ln -s /var/www/webroot/ROOT/master/wp-admin wp-admin && \
rm -rf wp-includes && \
ln -s /var/www/webroot/ROOT/master/wp-includes wp-includes && \
rm -rf wp-content/plugins && \
ln -s /var/www/webroot/ROOT/master/wp-content/plugins wp-content/plugins && \
rm -rf wp-content/themes && \
ln -s /var/www/webroot/ROOT/master/wp-content/themes wp-content/themes && \
rm -rf wp-content/mu-plugins && \
ln -s /var/www/webroot/ROOT/master/wp-content/mu-plugins wp-content/mu-plugins
rm wp-content/object-cache.php && \
ln -s /var/www/webroot/ROOT/master/wp-content/object-cache.php wp-content/object-cache.php
rm index.php && \
ln -s /var/www/webroot/ROOT/master/index.php index.php && \
rm wp-activate.php && \
ln -s /var/www/webroot/ROOT/master/wp-activate.php wp-activate.php && \
rm wp-blog-header.php && \
ln -s /var/www/webroot/ROOT/master/wp-blog-header.php wp-blog-header.php && \
rm wp-comments-post.php && \
ln -s /var/www/webroot/ROOT/master/wp-comments-post.php wp-comments-post.php && \
rm wp-cron.php && \
ln -s /var/www/webroot/ROOT/master/wp-cron.php wp-cron.php && \
rm wp-links-opml.php && \
ln -s /var/www/webroot/ROOT/master/wp-links-opml.php wp-links-opml.php && \
rm wp-load.php && \
ln -s /var/www/webroot/ROOT/master/wp-load.php wp-load.php && \
rm wp-login.php && \
ln -s /var/www/webroot/ROOT/master/wp-login.php wp-login.php && \
rm wp-mail.php && \
ln -s /var/www/webroot/ROOT/master/wp-mail.php wp-mail.php && \
rm wp-settings.php && \
ln -s /var/www/webroot/ROOT/master/wp-settings.php wp-settings.php && \
rm wp-signup.php && \
ln -s /var/www/webroot/ROOT/master/wp-signup.php wp-signup.php && \
rm wp-trackback.php && \
ln -s /var/www/webroot/ROOT/master/wp-trackback.php wp-trackback.php && \
rm xmlrpc.php && \
ln -s /var/www/webroot/ROOT/master/xmlrpc.php xmlrpc.php



#foreach n ( "wp-admin" )
#  ln -s /var/www/webroot/master/$n $n1
#end

modify-master-wp-config.php

<?php 

if (file_exists('/var/www/webroot/ROOT/tenant-config.php')) {
	include '/var/www/webroot/ROOT/tenant-config.php';
} else {

//rest of WP config here

}

multitenant-disable-updates.php

<?php

if(defined('MASTER_INSTALL')){
  if(MASTER_INSTALL != 1){
    add_filter( 'user_has_cap', 'multitenancy_disable_tenant_updates', 10, 3 );
  }
} else {
  add_filter( 'user_has_cap', 'multitenancy_disable_tenant_updates', 10, 3 );
}

function multitenancy_disable_tenant_updates( $allcaps, $caps, $args )
{
  $caps = array(
    'delete_plugins',
    'install_plugins',
    'edit_plugins',
    'update_plugins',
    'update_core',
    'update_plugins',
    'update_themes'
  );

  foreach ( $caps as $cap ) {
    $allcaps[$cap] = 0;
  }  
  
  return $allcaps;
}